https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL19695_%E2%80%93_Pico-Clock-Green%2FenWSAL19695 – Pico-Clock-Green/en - Versionsgeschichte2026-10-23T22:25:27ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL19695_%E2%80%93_Pico-Clock-Green/en&diff=1540&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:31:57Z<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 Pico-Clock-Green is an LED-digit clock for the Raspberry Pi Pico featuring an onboard DS3231 RTC, I2C interface, a photosensor, and three control buttons.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL19695 WSAL19695 – Electronic Clock for Raspberry Pi Pico, Accurate RTC, Multi Functions, LED Digits]<br />
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== Technical overview ==<br />
* Connects via the module’s pogo pins to TP3 (D+) and TP2 (D-) on the Raspberry Pi Pico.<br />
* Onboard high-precision DS3231 RTC chip with a backup battery holder for power retention.<br />
* Two SM16106 LED driver chips and one SM5166PLED control chip drive the 8 x 24 matrix LEDs.<br />
* Supports 12- or 24-hour display with an AM/PM indicator, plus two programmable alarms.<br />
* Automatic brightness adjustment uses the embedded photosensor to respond to ambient light.<br />
* The status bar indicates scroll mode, active alarm, countdown timer, Celsius/Fahrenheit, stopwatch, and hourly chime.<br />
* Three buttons allow switching configuration modes, adjusting values up/down, and exiting setup.<br />
* Operating voltage ranges from 3.3 V to 5 V; the backup battery accepts 2.3 V to 5.5 V.<br />
* Operating temperature range is -40 °C to +85 °C; standby current draw is approximately 100 nA.<br />
* Open-source demos are provided for C/C++, MicroPython, and Arduino development environments.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
wget -P ~/pico https://files.waveshare.com/upload/a/ab/Pico-Clock-Green.zip<br />
cd ~/pico<br />
unzip Pico-Clock-Green.zip<br />
cd ~/pico/Pico-Clock-Green/build/<br />
cmake ..<br />
make<br />
sudo mount /dev/sda1 /mnt/pico && sudo cp Pico-Clock-Green.uf2 /mnt/pico/ && sudo sync && sudo umount /mnt/pico && sleep 2<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* Verify the exact MicroPython firmware version before flashing; the source only lists one sample filename.<br />
* When first connecting the Pico over USB, hold the BOOTSEL button until the device appears as a removable drive.<br />
* Modifying the demos requires editing the CMakeLists.txt and generating a new .uf2 file.<br />
* The countdown timer automatically triggers the buzzer when it expires; this may be disruptive in quiet settings.<br />
* If issues arise with the Arduino environment, a full uninstall and manual cleanup of the AppData folder may be necessary.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/Pico-Clock-Green Pico-Clock-Green - Waveshare Wiki]<br />
* Source revision: 85345<br />
* Captured: 2026-09-02T02:44:42+00:00<br />
* SHA-256: <code>21ae4035f05d248e51363b58813e874cc202df3a563688fa3133157b1b5d79ac</code></div>JWTechPublisher