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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 Raspberry Pi Pico Sensor Kit bundles 13 sensor modules (temperature, humidity, gas, color, flame, etc.) for the RP2040-based Pico board. The guide covers flashing MicroPython firmware, setting up Thonny on Windows or Raspberry Pi, an LED control example, and pin connections for various sensor modules.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL19310 WSAL19310 – Raspberry Pi Pico, a Low-Cost, High-Performance Microcontroller Board with Flexible Digital Interfaces]<br />
* [https://shop.jw-tech.eu/p/WSAL19315 WSAL19315 – Raspberry Pi Pico, a Low-Cost, High-Performance Microcontroller Board with Flexible Digital Interfaces]<br />
* [https://shop.jw-tech.eu/p/WSAL19322 WSAL19322 – Raspberry Pi Pico, a Low-Cost, High-Performance Microcontroller Board with Flexible Digital Interfaces]<br />
* [https://shop.jw-tech.eu/p/WSAL19323 WSAL19323 – Raspberry Pi Pico, a Low-Cost, High-Performance Microcontroller Board with Flexible Digital Interfaces]<br />
* [https://shop.jw-tech.eu/p/WSAL19677 WSAL19677 – Raspberry Pi Pico, a Low-Cost, High-Performance Microcontroller Board with Flexible Digital Interfaces]<br />
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== Technical overview ==<br />
* The Pico board uses an RP2040 chip with dual Cortex-M0+ cores, up to 133 MHz clock, 264 KB SRAM, and 2 MB flash memory.<br />
* It provides 26 multi-function GPIO pins, plus 2× SPI, 2× I²C, 2× UART, three 12-bit ADCs, and 16 PWM channels.<br />
* The chip also includes eight programmable I/O (PIO) state machines, an onboard temperature sensor, and accelerated floating-point libraries.<br />
* For development, either Raspberry Pi's C/C++ SDK or MicroPython is available; the software environment is set up via the Thonny IDE.<br />
* To flash firmware: press BOOTSEL, connect via USB, release; the computer recognizes a removable disk (RPI-RP2) where you copy pico_micropython_20210121.uf2.<br />
* After flashing, the board reboots and appears as a virtual serial port (COM on Windows, /dev/ttyACM0 on Raspberry Pi).<br />
* In Thonny under Tools → Options → Interpreter select “MicroPython (Raspberry Pi Pico)” and choose the correct port (COM on Windows, /dev/ttyACM0 on Raspberry Pi).<br />
* The onboard LED is controlled via GPIO25 using the machine.Pin API in MicroPython.<br />
* Several sensor modules (flame, Hall, infrared proximity, liquid level, soil moisture, MQ5 gas, sound, UV) share one pin layout, enabling program reuse; the laser and tilt sensors likewise share a common pinout.<br />
* The kit contains 13 sensor modules including temperature/humidity, gas, color, and flame sensors that can be wired to the Pico’s GPIO headers.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo apt upgrade thonny<br />
from machine import Pin<br />
led = Pin(25, Pin.OUT)<br />
led.value(1)<br />
led.value(0)<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* The exact pin assignments for the laser, color, rotation-encoder, and temperature/humidity sensors are only given as section headings without concrete pin mappings; physical verification at the module is required.<br />
* The referenced firmware build (pico_micropython_20210121.uf2) is dated January 2021; newer MicroPython versions may have different APIs.<br />
* Thonny must be at least version 3.3.3, since older versions lack Pico support.<br />
* Compatibility of the kit with microcontrollers other than the Pico is not described in the source and should not be assumed.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/Raspberry-Pi-Pico-Sensor-Kit Raspberry-Pi-Pico-Sensor-Kit - Waveshare Wiki]<br />
* Source revision: 74035<br />
* Captured: 2026-09-01T04:05:14+00:00<br />
* SHA-256: <code>b5bdedc65371f079279c2f8e2f342ab1c4e44daba9cba260f34a0fb7e281d32f</code></div>JWTechPublisher