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<!DOCTYPE html>
<html class="no-js" lang="en">
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<meta content="width=device-width,initial-scale=1" name="viewport"/>
<link href="https://jomjol.github.io/AI-on-the-edge-device-docs/Hardware-Compatibility/" rel="canonical"/>
<link href="../initial-setup/" rel="prev"/>
<link href="../Best-Practice/" rel="next"/>
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<title>Hardware Compatibility - AI on the Edge Device</title>
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<a class="md-skip" href="#hardware-compatibility">1.
Skip to content
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AI on the Edge Device
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Hardware Compatibility
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Initializing search
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Getting Started
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Getting Started
</label>
<ul class="md-nav__list" data-md-scrollfix="">
<li class="md-nav__item">
<a class="md-nav__link" href="..">
<span class="md-ellipsis">
Welcome
</span>
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<a class="md-nav__link" href="../Installation/">
<span class="md-ellipsis">
Installation
</span>
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<a class="md-nav__link" href="../initial-setup/">
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Initial Setup
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Hardware Compatibility
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Hardware Compatibility
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Table of contents
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<a class="md-nav__link" href="#general-remark">1.1
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General Remark
</span>
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<a class="md-nav__link" href="../Best-Practice/">
<span class="md-ellipsis">
Best Practice
</span>
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<a class="md-nav__link" href="../FAQs/">
<span class="md-ellipsis">
Frequently Asked Questions
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Configuration
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<nav aria-expanded="false" aria-labelledby="__nav_2_label" class="md-nav" data-md-level="1">
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Configuration
</label>
<ul class="md-nav__list" data-md-scrollfix="">
<li class="md-nav__item">
<a class="md-nav__link" href="../Reference-Image/">
<span class="md-ellipsis">
Reference Image
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Alignment/">
<span class="md-ellipsis">
Alignment References
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../ROI-Configuration/">
<span class="md-ellipsis">
ROIs (Regions of Interest)
</span>
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<a class="md-nav__link" href="../Configuration/">
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Graphical Configuration
</span>
</a>
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<a class="md-nav__link" href="../Choosing-the-Model/">
<span class="md-ellipsis">
Model Selection
</span>
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<a class="md-nav__link" href="../ota/">
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Over-The-Air (OTA) Update
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Advanced
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Advanced
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<ul class="md-nav__list" data-md-scrollfix="">
<li class="md-nav__item">
<a class="md-nav__link" href="../Parameters/">
<span class="md-ellipsis">
Parameters
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Integration-Home-Assistant/">
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Integration into Home Assistant
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../External-LED/">
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External LED
</span>
</a>
</li>
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<a class="md-nav__link" href="../data-logging/">
<span class="md-ellipsis">
Data Logging
</span>
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<a class="md-nav__link" href="../rolling-installation/">
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Living on the Edge
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Watermeter-specific-analog---digital-transition/">
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Analog/Digital Transition on Water Meters
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../collect-new-images/">
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Collect images to improve the models
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</a>
</li>
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<a class="md-nav__link" href="../Learn-models-with-your-own-images/">
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Learn a model with your own images
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<a class="md-nav__link" href="../Correction%20Algorithm/">
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Correction Algorithm
</span>
</a>
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Neural Network Types
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Additional Information
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Notification about new Releases
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</a>
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<a class="md-nav__link" href="../prometheus-openmetrics/">
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Prometheus/OpenMetrics
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Troubleshooting
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Troubleshooting
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Reduced webinterface (error codes)
</span>
</a>
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<a class="md-nav__link" href="../StatusLED-BlinkCodes/">
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Board status LED (blink codes)
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<a class="md-nav__link" href="../WLAN-disconnect-reason/">
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WLAN disconnect reasons
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Often observed issues
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<a class="md-nav__link" href="../Frequent-Reboots/">
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Basic hardware/config issues
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Demo mode
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Quick Links
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Quick Links
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Releases
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<a class="md-nav__link" href="https://jomjol.github.io/AI-on-the-edge-device/index.html">
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Web Installer/Console
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Create an Issue
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Join a Discussion
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API's
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API's
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REST API
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<a class="md-nav__link" href="../MQTT-API/">
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MQTT API
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Influx DB
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Development
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Development
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Build the Project
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<a class="md-nav__link" href="../Upload-files-by-script/">
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Scripted File Upload
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Testing Option for VSCode
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Preparing for Release
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General Remark
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<h1 id="hardware-compatibility"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.</span> Hardware Compatibility</h1>
<h2 id="general-remark"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1</span> General Remark</h2>
<p>Although a board looks similar, it can have major differences, e.g.:</p>
<ul>
<li>Processor</li>
<li>Ram (Size! &amp; Type) -&gt; this Project needs at least 4MB RAM!</li>
<li>Flashrom</li>
<li>Camera Modules</li>
<li>Onboard/External Antenna</li>
<li>Quality of Components</li>
<li>Manufacture Quality of the PCB and soldering</li>
<li>Different Components</li>
<li>"Clone" Components -&gt; ESPxx</li>
<li>etc.</li>
</ul>
<p>This can cause different Power Consumption, Power Requirements, compatibility issues, etc.</p>
<p>Most manufacturers and sellers buy what's cheap today on the Asian markets. In the end, it looks like it is sometimes a trial and error approach which ESP32-CAM Module works reliably.</p>
<p>Below you find some remarks and experiences from the community:</p>
<h1 id="esp32-core-itself"><span class="enumerate-headings-plugin enumerate-heading-plugin">2.</span> ESP32 core itself</h1>
<table>
<thead>
<tr>
<th>Chip Version</th>
<th>Image</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>ESP32-D0WDQ6 (revision 1)</td>
<td></td>
<td>✔️</td>
</tr>
</tbody>
</table>
<h1 id="psram"><span class="enumerate-headings-plugin enumerate-heading-plugin">3.</span> PSRAM</h1>
<p>There seems to be a lot of "fake" chips, or maybe wrongly configured ESP32 Boards.</p>
<p>For AP MEMORY, all "real" APS<strong>64</strong>04*3SQR chips should work.</p>
<p>For ESP PSRAM, all "real" PSRAM<strong>64</strong>* should work.</p>
<p>64Mbit density = 8Mbyte PSRAM</p>
<p>This Table is just a snapshot of chips which worked</p>
<table>
<thead>
<tr>
<th>Labeling on PSRAM module</th>
<th>Image</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>IPUS / IPS640LS0 / 1815XBGN</td>
<td></td>
<td>✔️</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SOR / 1040H / 110089G</td>
<td></td>
<td>✔️</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 12205 / 150047G</td>
<td></td>
<td>✔️ 8MB</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 12208 / 150047G</td>
<td></td>
<td>✔️ 8MB</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-350R / 1120A / 130027G</td>
<td></td>
<td>❌ PSRAM not accessible</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-35QR / 11208 / 130025G</td>
<td></td>
<td>❌ PSRAM not accessible</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 13100 / 180026G</td>
<td></td>
<td>❌ PSRAM not accessible</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 11207 / 130024G</td>
<td></td>
<td>❌ PSRAM not accessible</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 1120A / 130027G</td>
<td></td>
<td>✔️ 8MB</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 1120B / 130028G</td>
<td></td>
<td>✔️ 8MB</td>
</tr>
<tr>
<td>AP MEMORY / <strong>64</strong>04L-3SQR / 1120D / 130030G</td>
<td></td>
<td>✔️ 8MB</td>
</tr>
<tr>
<td>AP MEMORY / 1604M-3SQR / 0280A / 070036G</td>
<td></td>
<td>❌ 2MB only!</td>
</tr>
<tr>
<td>ESP PSRAM<strong>64</strong>H 462021 / 1B00286</td>
<td></td>
<td>✔️</td>
</tr>
<tr>
<td>ESP PSRAM<strong>64</strong>H 412021 / 1A0039G</td>
<td></td>
<td>✔️ 8MB</td>
</tr>
<tr>
<td>ESP PSRAM<strong>64</strong>H 402021 / 1A0017N</td>
<td></td>
<td>❌ PSRAM not accessible</td>
</tr>
<tr>
<td>ESP PSRAM16M 302020</td>
<td></td>
<td>❌ 2MB only!</td>
</tr>
<tr>
<td>ESP PSRAM16H 202020 / 050022G</td>
<td></td>
<td>❌ 2MB only!</td>
</tr>
</tbody>
</table>
<h1 id="ov2640-camera"><span class="enumerate-headings-plugin enumerate-heading-plugin">4.</span> OV2640 - Camera</h1>
<p>The experience with the camera only is based on single modules. It is well possible, that this module had a damage overall and other modules of the same type will work. Give it a try and report to me!</p>
<table>
<thead>
<tr>
<th>Labeling on Flex-Connector</th>
<th>Image</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>TY-OV2 / 640-V2.0</td>
<td></td>
<td>✔️</td>
</tr>
<tr>
<td>DCX-OV2 / 640-V2</td>
<td></td>
<td>✔️</td>
</tr>
<tr>
<td>DC-26 / 40-V3</td>
<td></td>
<td>✔️ 3x<br/> ❌ 1x</td>
</tr>
</tbody>
</table>
<h1 id="esp32-modules"><span class="enumerate-headings-plugin enumerate-heading-plugin">5.</span> ESP32 Modules</h1>
<table>
<thead>
<tr>
<th>Module</th>
<th>Image</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>ESP32CAM / Different versions on the market!<br/>Especially the PSRAM is sometimes labeled wrong<br/>(Label: 4MB, Real: only 2 MB --&gt; will not work!)</td>
<td></td>
<td>✔️<br>with &gt;=4 MB PSRAM!</br></td>
</tr>
<tr>
<td>ESP32-S3-EYE<br>No Flash LED, pins different used (e.g. LCD display)</br></td>
<td></td>
<td><strong>NOT OKAY</strong></td>
</tr>
</tbody>
</table>
<h1 id="sd-cards"><span class="enumerate-headings-plugin enumerate-heading-plugin">6.</span> SD Cards</h1>
<p>Due to the limited free available GPIOs (due to all the extensions needed like: camera, SD card, LED-flash, ...) the SD card is connected in 1-wire mode. There are some cards, that are compatible with the esp32cam module for unknown reasons.
It is observed, that smaller cards (up to 4 GB) tend to be more stable and larger cards have more problems. But quite some exceptions in the forums (4 GB cards not working, 16 GB cards working like a charm).</p>
<h1 id="devices-known-to-work"><span class="enumerate-headings-plugin enumerate-heading-plugin">7.</span> Devices known to work</h1>
<h2 id="modules-old-list-not-up-to-date-anymore"><span class="enumerate-headings-plugin enumerate-heading-plugin">7.1</span> Modules (Old list, not up-to-date anymore):</h2>
<p>See <a href="https://github.com/jomjol/AI-on-the-edge-device/discussions/1732">https://github.com/jomjol/AI-on-the-edge-device/discussions/1732</a> for a more recent list.</p>
<ul>
<li>
<p><a href="https://arduino-projekte.info/produkt/esp32-cam-v2-integriertem-ch340-mit-ov2640-kamera-modul/">https://arduino-projekte.info/produkt/esp32-cam-v2-integriertem-ch340-mit-ov2640-kamera-modul/</a> (see <a href="https://github.com/jomjol/AI-on-the-edge-device/discussions/1041">https://github.com/jomjol/AI-on-the-edge-device/discussions/1041</a>)</p>
</li>
<li>
<p><a href="https://www.amazon.de/-/en/gp/product/B0B51CQ13R">https://www.amazon.de/-/en/gp/product/B0B51CQ13R</a></p>
</li>
<li>
<p><a href="https://www.reichelt.de/entwicklerboards-esp32-kamera-2mp-25--debo-cam-esp32-p266036.html?PROVID=2788&amp;gclid=CjwKCAiAqaWdBhAvEiwAGAQlttJnV4azXWDYeaFUuNioMICh-jvxKp6Cifmcep9vvtoT2JRCDqBczRoC7Q0QAvD_BwE">https://www.reichelt.de/entwicklerboards-esp32-kamera-2mp-25--debo-cam-esp32-p266036.html?PROVID=2788&amp;gclid=CjwKCAiAqaWdBhAvEiwAGAQlttJnV4azXWDYeaFUuNioMICh-jvxKp6Cifmcep9vvtoT2JRCDqBczRoC7Q0QAvD_BwE</a> (27.12.2022)</p>
</li>
</ul>
<h2 id="sd-card"><span class="enumerate-headings-plugin enumerate-heading-plugin">7.2</span> SD Card</h2>
<ul>
<li>Sandisk 2GB Micro SD Class 2 <a href="https://www.amazon.co.uk/gp/product/B000N3LL02/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&amp;psc=1">Sandisk 2GB</a>
AITRIP ESP32 and CAM <a href="https://www.amazon.co.uk/gp/product/B08X49P8P3/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&amp;psc=1">ESP-32/CAM</a></li>
<li><a href="https://www.amazon.com/gp/product/B0948ZFTQZ">Amazon US - Aideepen ESP32-CAM W BT Board ESP32-CAM-MB Micro USB to Serial Port CH-340G with OV2640 2MP Camera Module Dual Mode</a> with <a href="https://www.amazon.com/gp/product/B07QYTP4VN">Amazon US - Cloudisk 5Pack 4GB Micro SD Card 4 GB MicroSD Memory Card Class6</a></li>
</ul>
<h1 id="weak-wifi"><span class="enumerate-headings-plugin enumerate-heading-plugin">8.</span> Weak Wifi</h1>
<p>The ESP32-CAM supports an external antenna. It requires some soldering skills but can improve the connection quality. See <a href="https://randomnerdtutorials.com/esp32-cam-connect-external-antenna/">https://randomnerdtutorials.com/esp32-cam-connect-external-antenna/</a></p>
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