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<h1 id="hardware-compatibility">Hardware Compatibility</h1>
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<h3 id="general-remark">General Remark</h3>
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<p>Although a board looks similar, it can have major differences, e.g.:</p>
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<ul>
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<li>Processor</li>
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<li>Ram (Size! & Type) -> this Project needs at least 4MB RAM!</li>
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<li>Flashrom</li>
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<li>Camera Modules</li>
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<li>Onboard/External Antenna</li>
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<li>Quality of Components</li>
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<li>Manufacture Quality of the PCB and soldering</li>
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<li>Different Components</li>
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<li>"Clone" Components -> ESPxx</li>
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<li>etc.</li>
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</ul>
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<p>This can cause different Power Consumption, Power Requirements, compatibility issues, etc.</p>
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<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>
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<p>Below you find some remarks and experiences from the community:</p>
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<h1 id="esp32-core-itself">ESP32 core itself</h1>
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<table>
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<thead>
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<tr>
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<th>Chip Version</th>
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<th>Image</th>
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<th>Status</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>ESP32-D0WDQ6 (revision 1)</td>
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<td></td>
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<td>✔️</td>
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</tr>
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</tbody>
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</table>
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<h1 id="psram">PSRAM</h1>
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<p>There seems to be a lot of "fake" chips, or maybe wrongly configured ESP32 Boards.</p>
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<p>For AP MEMORY, all "real" APS<strong>64</strong>04*3SQR chips should work.</p>
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<p>For ESP PSRAM, all "real" PSRAM<strong>64</strong>* should work.</p>
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<p>64Mbit density = 8Mbyte PSRAM</p>
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<p>This Table is just a snapshot of chips which worked</p>
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<table>
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<thead>
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<tr>
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<th>Labeling on PSRAM module</th>
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<th>Image</th>
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<th>Status</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>IPUS / IPS640LS0 / 1815XBGN</td>
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<td></td>
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<td>✔️</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SOR / 1040H / 110089G</td>
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<td></td>
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<td>✔️</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 12205 / 150047G</td>
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<td></td>
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<td>✔️ 8MB</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 12208 / 150047G</td>
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<td></td>
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<td>✔️ 8MB</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-350R / 1120A / 130027G</td>
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<td></td>
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<td>❌ PSRAM not accessible</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-35QR / 11208 / 130025G</td>
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<td></td>
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<td>❌ PSRAM not accessible</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 13100 / 180026G</td>
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<td></td>
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<td>❌ PSRAM not accessible</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 11207 / 130024G</td>
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<td></td>
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<td>❌ PSRAM not accessible</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 1120A / 130027G</td>
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<td></td>
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<td>✔️ 8MB</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 1120B / 130028G</td>
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<td></td>
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<td>✔️ 8MB</td>
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</tr>
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<tr>
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<td>AP MEMORY / <strong>64</strong>04L-3SQR / 1120D / 130030G</td>
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<td></td>
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<td>✔️ 8MB</td>
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</tr>
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<tr>
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<td>AP MEMORY / 1604M-3SQR / 0280A / 070036G</td>
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<td></td>
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<td>❌ 2MB only!</td>
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</tr>
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<tr>
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<td>ESP PSRAM<strong>64</strong>H 462021 / 1B00286</td>
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<td></td>
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<td>✔️</td>
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</tr>
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<tr>
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<td>ESP PSRAM<strong>64</strong>H 412021 / 1A0039G</td>
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<td></td>
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<td>✔️ 8MB</td>
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</tr>
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<tr>
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<td>ESP PSRAM<strong>64</strong>H 402021 / 1A0017N</td>
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<td></td>
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<td>❌ PSRAM not accessible</td>
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</tr>
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<tr>
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<td>ESP PSRAM16M 302020</td>
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<td></td>
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<td>❌ 2MB only!</td>
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</tr>
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<tr>
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<td>ESP PSRAM16H 202020 / 050022G</td>
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<td></td>
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<td>❌ 2MB only!</td>
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</tr>
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</tbody>
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</table>
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<h1 id="ov2640-camera">OV2640 - Camera</h1>
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<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>
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<table>
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<thead>
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<tr>
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<th>Labeling on Flex-Connector</th>
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<th>Image</th>
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<th>Status</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>TY-OV2 / 640-V2.0</td>
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<td></td>
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<td>✔️</td>
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</tr>
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<tr>
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<td>DCX-OV2 / 640-V2</td>
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<td></td>
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<td>✔️</td>
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</tr>
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<tr>
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<td>DC-26 / 40-V3</td>
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<td></td>
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<td>✔️ 3x<br> ❌ 1x</td>
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</tr>
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</tbody>
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</table>
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<h1 id="esp32-modules">ESP32 Modules</h1>
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<table>
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<thead>
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<tr>
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<th>Module</th>
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<th>Image</th>
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<th>Status</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>ESP32CAM / Different versions on the market!<br>Especially the PSRAM is sometimes labeled wrong<br>(Label: 4MB, Real: only 2 MB --> will not work!)</td>
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<td></td>
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<td>✔️<br />with >=4 MB PSRAM!</td>
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</tr>
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<tr>
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<td>ESP32-S3-EYE<br />No Flash LED, pins different used (e.g. LCD display)</td>
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<td></td>
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<td><strong>NOT OKAY</strong></td>
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</tr>
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</tbody>
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</table>
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<h1 id="sd-cards">SD Cards</h1>
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<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.
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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>
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<h1 id="devices-known-to-work">Devices known to work</h1>
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<h3 id="modules-old-list-not-up-to-date-anymore">Modules (Old list, not up-to-date anymore):</h3>
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<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>
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<ul>
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<li>
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<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>
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</li>
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<li>
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<p><a href="https://www.amazon.de/-/en/gp/product/B0B51CQ13R">https://www.amazon.de/-/en/gp/product/B0B51CQ13R</a></p>
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</li>
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<li>
|
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<p><a href="https://www.reichelt.de/entwicklerboards-esp32-kamera-2mp-25--debo-cam-esp32-p266036.html?PROVID=2788&gclid=CjwKCAiAqaWdBhAvEiwAGAQlttJnV4azXWDYeaFUuNioMICh-jvxKp6Cifmcep9vvtoT2JRCDqBczRoC7Q0QAvD_BwE">https://www.reichelt.de/entwicklerboards-esp32-kamera-2mp-25--debo-cam-esp32-p266036.html?PROVID=2788&gclid=CjwKCAiAqaWdBhAvEiwAGAQlttJnV4azXWDYeaFUuNioMICh-jvxKp6Cifmcep9vvtoT2JRCDqBczRoC7Q0QAvD_BwE</a> (27.12.2022)</p>
|
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</li>
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</ul>
|
|
<h3 id="sd-card">SD Card</h3>
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|
<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&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&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>
|
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</ul>
|
|
<h1 id="weak-wifi">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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