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Automatic Door Control Arduino

Main repository of all Arduino-related files and programs belonging to the ADC project. The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.

How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)

  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch

How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)

  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch

How to set the current time using the RTC and Linux

  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino

How to setup Arduino:

  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door

Dependencies

About

Circuit Diagrams and Code for the control box

Resources

Readme
MIT license
Activity
Custom properties

Stars

1 star

Watchers

2 watching

Forks

3 forks
Report repository

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Contributors

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, '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
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Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
Resources
Readme
MIT license
Activity
Custom properties
Stars
1 star
Watchers
2 watching
Forks
3 forks
Report repository
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, '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
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Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
Resources
Readme
MIT license
Activity
Custom properties
Stars
1 star
Watchers
2 watching
Forks
3 forks
Report repository
Releases
Packages
Used by
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
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Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
Resources
Readme
MIT license
Activity
Custom properties
Stars
1 star
Watchers
2 watching
Forks
3 forks
Report repository
Releases
Packages
Used by
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
Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
Resources
Readme
MIT license
Activity
Custom properties
Stars
1 star
Watchers
2 watching
Forks
3 forks
Report repository
Releases
Packages
Used by
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
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Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
Resources
Readme
MIT license
Activity
Custom properties
Stars
1 star
Watchers
2 watching
Forks
3 forks
Report repository
Releases
Packages
Used by
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
Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
Resources
Readme
MIT license
Activity
Custom properties
Stars
1 star
Watchers
2 watching
Forks
3 forks
Report repository
Releases
Packages
Used by
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
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Automatic Door Control Arduino
Main repository of all Arduino-related files and programs belonging to the ADC project.
The Arduino portion of the ADC project is tasked with recieving a 6 digit TOTP over bluetooth, comparing the TOTP to one generated using the onboard RTC and HMAC private key, and if the TOTP matches firing a relay to trigger the door opening.
How to Wire HC-08: (Also shown in Circuit_Diagrams/ADC_circuit)
  1. VCC goes to 5V power supply on arduino
  2. GND goes to ground power on arudino
  3. TXD goes to Digital pin 10 on arduino
  4. RXD goes to Digital pin 11 on arduino
  5. The other two (State and FN) don't touch
How to wire the RTC: (also shown in Circuit_Diagrams/ADC_Circuit)
  1. GND goes to the ground on the arduino
  2. VCC goes to the 3.5V power supply (5V also works but recommended use is 3.5V)
  3. SDA goes to Analogin Pin A4
  4. SCL goes to Analogin Pin A5
  5. 32K and SQW don't touch
How to set the current time using the RTC and Linux
  1. Upload the RTC.ino sketch to the Arduino
  2. While running and connected, run date +T%s > /dev/ttyUSB0 to send the current UTC time to the Arduino
How to setup Arduino:
  1. Wire the arduino up correctly
  2. First set up the time to the RTC by uploading RTC.ino to the arduino and setting the current time in the code
  3. Next you might want to rename the HC-08 so you can add it to the API. The code rename.ino can help with renaming the HC-08 module
  4. Last step is to upload the TOTP_ADC code and select the correct key for the specific door
Dependencies
About
Circuit Diagrams and Code for the control box
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