https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL19075_%E2%80%93_3-CH_Relay_for_Jetson_Nano%2FenWSAL19075 – 3-CH Relay for Jetson Nano/en - Versionsgeschichte2026-10-23T21:51:52ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL19075_%E2%80%93_3-CH_Relay_for_Jetson_Nano/en&diff=1204&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:25:08Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
<br />
== Summary ==<br />
The Waveshare 3-channel relay expansion connects three relays to the Jetson Nano via a standard 40-pin GPIO header. Optocoupler isolation separates the high-voltage side, and jumpers/LEDs indicate channel status.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL19075 WSAL19075 – Quality 3-Ch Relay Expansion Board Designed For Jetson Nano, Optocoupler Isolation]<br />
<br />
== Technical overview ==<br />
* Standard 40-pin GPIO header for direct stacking onto the Jetson Nano.<br />
* Each relay is rated for up to 5 A at 250 V AC or 5 A at 30 V DC.<br />
* Optocoupler isolation prevents interference from the high-voltage circuit.<br />
* Onboard indicators show each relay’s operating status.<br />
* Relay control pins are selectable with jumpers (e.g., P21/P16 for CH1).<br />
* An acrylic bottom panel isolates the Jetson Nano from the expansion board.<br />
<br />
'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo apt-get install p7zip<br />
wget https://files.waveshare.com/wiki/3-CH%20Relay%20for%20Jetson%20Nano/3-CH_Realy_for_jetsonnano.7z<br />
7zr x 3-CH_Realy_for_jetsonnano.7z -r -o./3-CH_Realy_for_jetsonnano<br />
cd 3-CH_Realy_for_jetsonnano/<br />
sudo python test.py<br />
sudo apt install python3-pip<br />
sudo pip3 install bottle<br />
cd python-bottle<br />
sudo python3 main.py<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* Exact jumper assignments depend on the hardware revision; verify against the board before testing.<br />
* The web control interface requires a reachable Jetson Nano IP; determine the address within your local network.<br />
* Downloading the demo file requires an active internet connection during setup.<br />
* Maximum load per relay is limited to 5 A – higher currents can damage components.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/3-CH_Relay_for_Jetson_Nano 3-CH Relay for Jetson Nano - Waveshare Wiki]<br />
* Source revision: 98512<br />
* Captured: 2026-09-01T03:55:31+00:00<br />
* SHA-256: <code>8a26fc24b7be74315854bfcf4cec3444f625810224221efd2c78b59fd4ac4966</code></div>JWTechPublisher