BranchesTags

Repository files navigation

node-dht-sensor

This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.

Installation

$ npm install node-dht-sensor

Usage

This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.

To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.

You should use sensorType value to match the sensor as follows:

SensorsensorType value
DHT1111
DHT22 or AM230222

If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.

First Example

example1

This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.

varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});

Multiple Sensors Example

example2

The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:

  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();

Reference for building from source

Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.

  1. Download BCM2835 library and follow installation instructions.

  2. In case, you don't have node-gyp, install it first:

    $ sudo npm install node-gyp -g

  3. Generate the configuration files

    $ node-gyp configure

  4. Build the component

    $ node-gyp build

Tracing and Debugging

Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.

$ npm install node-dht-sensor --dht_verbose=true

if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.

$ node-gyp configure -- -Ddht_verbose=true

Appendix A: Quick Node.js installation guide

There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.

$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1

Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.

References

[1]: Node.js latest release - http://nodejs.org/dist/latest/

[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/

[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp

[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/

About

Node.js Humidity and Temperature sensor addon

Resources

Readme
License
Activity

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
node-dht-sensor
This node.js module supports querying air temperature and relative humidity from a compatible DHT sensor.
Installation
$ npm install node-dht-sensor
Usage
This module depends on the BCM2835 library that must be installed on your board before you can actually use this module.
To initialize the sensor, you have to specify the sensor type and the GPIO pin where the sensor is connected to. It should work for DHT11, DHT22 and AM2302 sensors.
You should use sensorType value to match the sensor as follows:
SensorsensorType value
DHT1111
DHT22 or AM230222
If the initialization succeeds when you can call the read function to obtain the latest readout from the sensor. Readout values contains a temperature and a humidity property.
First Example
example1
This sample queries a DHT22 sensor connected to the GPIO 4 and prints out the result on the console.
varsensor=require('node-dht-sensor');sensor.read(22,4,function(err,temperature,humidity){if(!err){console.log('temp: '+temperature.toFixed(1)+'°C, '+'humidity: '+humidity.toFixed(1)+'%');}});
Multiple Sensors Example
example2
The following example shows a method for querying multiple sensors connected to the same Raspberry Pi. For this example, we have two sensors:
  1. A DHT11 sensor connected to GPIO 17
  2. High-resolution DHT22 sensor connected to GPIO 4
varsensorLib=require("node-dht-sensor");varsensor={sensors: [{name: "Indoor",type: 11,pin: 17},{name: "Outdoor",type: 22,pin: 4}],read: function(){for(varainthis.sensors){varb=sensorLib.read(this.sensors[a].type,this.sensors[a].pin);console.log(this.sensors[a].name+": "+b.temperature.toFixed(1)+"°C, "+b.humidity.toFixed(1)+"%");}setTimeout(function(){sensor.read();},2000);}};sensor.read();
Reference for building from source
Standard node-gyp commands are used to build the module. So, just make sure you have node and node-gyp as well as the Broadcom library to build the project.
  1. Download BCM2835 library and follow installation instructions.
  2. In case, you don't have node-gyp, install it first:
    $ sudo npm install node-gyp -g
  3. Generate the configuration files
    $ node-gyp configure
  4. Build the component
    $ node-gyp build
Tracing and Debugging
Verbose output from the module can be enabled by by specifying the --dht_verbose=true flag when installing the node via npm.
$ npm install node-dht-sensor --dht_verbose=true
if you are interested in enabling trace when building directly from source you can enable the -Ddht_verbose flag when running node-gyp configure.
$ node-gyp configure -- -Ddht_verbose=true
Appendix A: Quick Node.js installation guide
There are many ways you can get Node.js installed on your Raspberry Pi. Here is just one of way you can do it.
$ wget http://nodejs.org/dist/v7.1.0/node-v7.1.0-linux-armv7l.tar.xz
$ tar xvfJ node-v7.1.0-linux-armv7l.tar.xz
$ sudo mv node-v7.1.0-linux-armv7l /opt
$ sudo update-alternatives --install "/usr/bin/node""node""/opt/node-v7.1.0-linux-armv7l/bin/node" 1
$ sudo update-alternatives --set node /opt/node-v7.1.0-linux-armv7l/bin/node
$ sudo update-alternatives --install "/usr/bin/npm""npm""/opt/node-v7.1.0-linux-armv7l/bin/npm" 1
Please note that you may have to use armv6l instead of arm7l if you have an early Raspberry Pi model.
References
[1]: Node.js latest release - http://nodejs.org/dist/latest/
[2]: BCM2835 - http://www.airspayce.com/mikem/bcm2835/
[3]: Node.js native addon build tool - https://github.com/TooTallNate/node-gyp
[4]: GPIO: Raspbery Pi Models A and B - https://www.raspberrypi.org/documentation/usage/gpio/
About
Node.js Humidity and Temperature sensor addon
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages