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MotorControl

App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app.

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.

This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.

Not including sensors, the parts are under $30.

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth.

The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint: https://www.aliexpress.us/item/3256804150863583

The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected): ESP32_Controller

Boxes with DC barrel and aviation outs:
<P>
3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot

About

This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.

Resources

Readme
GPL-2.0 license
Activity

Stars

18 stars

Watchers

1 watching

Forks

3 forks
Report repository

Releases

Packages

Contributors

, '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" + '

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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
Resources
Readme
GPL-2.0 license
Activity
Stars
18 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
Resources
Readme
GPL-2.0 license
Activity
Stars
18 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
Resources
Readme
GPL-2.0 license
Activity
Stars
18 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors

, '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" + '

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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
Resources
Readme
GPL-2.0 license
Activity
Stars
18 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
Resources
Readme
GPL-2.0 license
Activity
Stars
18 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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README.md
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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
Resources
Readme
GPL-2.0 license
Activity
Stars
18 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors

, '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); }
})();
})();

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MotorControl
App Screenshot

I was building a lot of machines and spending too much time trying to build physical controls for each. Now everything is just a drag and drop app based on a standard design. I can plug the outs of the control box into any of the machines - even hacking commercial machines I want to run by app. 

The control box contains up to four 400w / 15A MOSFET boards. Each mosfet runs independently for driving brushed motors, solenoids, heaters, etc and typicaly have a DC barrel jack out for the load. An ESP32 provides pins for stepper control, sensors, like temp or pressure sensor, displays, and also includes WIFI and BT. Blync allows no-code app design with drag and drop widgets so anyone can customize it. Virtual pins from Blync tie the app and hardware together.


This goes into a 3d printed enclosure based off the Ultimate Box Creator on Thingverse (https://www.thingiverse.com/thing:1264391) I've added parametric options specific to this design. Just simple things - optional OLED display, number of mosfet boards, power switch in the front or back, use DC barrel jacks or aviation connector as outputs.


Not including sensors, the parts are under $30. 

The MOSFET boards are 10 for $14 - https://www.amazon.com/gp/product/B07XJSRY6B
I've been buying the S2 mini and S3 versions to get full USB support (some of them end up as MIDI controllers) but the old version works just fine. The S2 mini is great for space constrained installations, but doesn't have bluetooth. 
The ESP32 is available for $6 with expansion that has a 12v barrel input for power in an UNO footprint:
https://www.aliexpress.us/item/3256804150863583
The MOSFET boards have pass thought positives and horrible screw terminals, so I hook it up like this (don't power VIN if USB is connected):
ESP32_Controller
Boxes with DC barrel and aviation outs:
<P>

3chan controller3chan controller back4chan back panel

Some screen shots:

App ScreenshotApp ScreenshotApp Screenshot
About
This is a 4 channel motor controller. 15A per channel. ESP32 give WIFI and BT controls. Blync makes it trivial to have it app enabled. Parts estimate is around $30.
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