https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL22913_%E2%80%93_PI4-FAN-PWM%2Fen 2026-10-23T22:56:33Z Versionsgeschichte dieser Seite in JW Tech Wiki MediaWiki 1.43.9 https://wiki.jw-tech.eu/index.php?title=WSAL22913_%E2%80%93_PI4-FAN-PWM/en&diff=2486&oldid=prev 2026-09-06T06:05:41Z

<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p> <p><b>Neue Seite</b></p><div>__NOINDEX__<br /> &#039;&#039;&#039;Documentation notice:&#039;&#039;&#039; 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 PI4-FAN-PWM is a slim, lightweight heatsink housing with an integrated ultra-quiet 3510 fan. It supports PWM speed control and is fully compatible with the Raspberry Pi OS; other systems require manual driving via Python or C code.<br /> <br /> == Related products at JW Tech ==<br /> * [https://shop.jw-tech.eu/p/WSAL22913 WSAL22913 – Dedicated All-In-One aluminum alloy cooling fan for Raspberry Pi 4B, PWM speed adjustment, better cooling]<br /> * [https://shop.jw-tech.eu/p/WSAL22931 WSAL22931 – Dedicated All-In-One aluminum alloy cooling fan for Raspberry Pi 4B, PWM speed adjustment, better cooling]<br /> <br /> == Technical overview ==<br /> * Slim, lightweight heatsink with an integrated 3510 fan.<br /> * PWM speed regulation is natively supported by the Raspberry Pi OS.<br /> * Compatible only with the Raspberry Pi 4B.<br /> * Automatic speed control works only under the Raspberry Pi OS.<br /> * Package includes: 1× FAN Adapter (optional), 1× heatsink with PWM fan, 1× screwdriver, 2× M2.5×6 mm screws, 4× thermal pads, 1× instruction sheet.<br /> * For assembly, a thermal pad is applied to the Raspberry Pi 4B, then the enclosure is fastened from the rear with screws.<br /> * Wires connect directly to the Pi4B; the PWM pin can be connected to TXD (GPIO14), GPIO12, or GPIO18.<br /> * When using the FAN Adapter, the default PWM pin is D12 (GPIO12); switching to TXD or D18 requires changing a 0Ω resistor.<br /> * Under the Raspberry Pi OS, fan control is enabled via `sudo raspi-config`: Performance Options → Fan → Yes, enter pin 12 (or 14 if using TXD), and set the threshold to 60 °C.<br /> * Two demo programs drive the fan via RPi.GPIO; Demo1 switches to full duty at ≥40 °C, Demo2 stages duty cycle above 48 °C and 60 °C.<br /> <br /> &#039;&#039;&#039;Commands and examples – verify before use:&#039;&#039;&#039; <br /> &lt;syntaxhighlight lang=&quot;text&quot;&gt;<br /> sudo raspi-config<br /> pip freeze | grep RPi.GPIO<br /> python3 pwm-fan.py<br /> &lt;/syntaxhighlight&gt;<br /> <br /> == Notes and version constraints ==<br /> * Designed exclusively for the Raspberry Pi 4B – no compatibility with other Pi models is stated.<br /> * Automatic temperature control requires the official Raspberry Pi OS; other operating systems need custom drivers (Python/C).<br /> * The exact GPIO pin must be adjusted in the code depending on whether TXD (GPIO14), GPIO12, or GPIO18 is used.<br /> * The thresholds in the demos (40/48/60/65 °C) are example values and should be tuned as needed.<br /> * Using the FAN Adapter may require modifying a 0Ω resistor to switch the default pin – a hardware change that should be performed carefully.<br /> <br /> == Source and revision record ==<br /> * [https://www.waveshare.com/wiki/PI4-FAN-PWM PI4-FAN-PWM - Waveshare Wiki]<br /> * Source revision: 80625<br /> * Captured: 2026-09-03T04:30:06+00:00<br /> * SHA-256: &lt;code&gt;83741e61b730259e36e775ab3442ed5b1318d98d79cb90760f6879b523e1adc3&lt;/code&gt;</div>

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