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WSAL19310 – Raspberry-Pi-Pico-Sensor-Kit/en

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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.

Summary

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.

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Technical overview

  • 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.
  • It provides 26 multi-function GPIO pins, plus 2× SPI, 2× I²C, 2× UART, three 12-bit ADCs, and 16 PWM channels.
  • The chip also includes eight programmable I/O (PIO) state machines, an onboard temperature sensor, and accelerated floating-point libraries.
  • For development, either Raspberry Pi's C/C++ SDK or MicroPython is available; the software environment is set up via the Thonny IDE.
  • To flash firmware: press BOOTSEL, connect via USB, release; the computer recognizes a removable disk (RPI-RP2) where you copy pico_micropython_20210121.uf2.
  • After flashing, the board reboots and appears as a virtual serial port (COM on Windows, /dev/ttyACM0 on Raspberry Pi).
  • In Thonny under Tools → Options → Interpreter select “MicroPython (Raspberry Pi Pico)” and choose the correct port (COM on Windows, /dev/ttyACM0 on Raspberry Pi).
  • The onboard LED is controlled via GPIO25 using the machine.Pin API in MicroPython.
  • 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.
  • The kit contains 13 sensor modules including temperature/humidity, gas, color, and flame sensors that can be wired to the Pico’s GPIO headers.

Commands and examples – verify before use:  

sudo apt upgrade thonny
from machine import Pin
led = Pin(25, Pin.OUT)
led.value(1)
led.value(0)

Notes and version constraints

  • 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.
  • The referenced firmware build (pico_micropython_20210121.uf2) is dated January 2021; newer MicroPython versions may have different APIs.
  • Thonny must be at least version 3.3.3, since older versions lack Pico support.
  • Compatibility of the kit with microcontrollers other than the Pico is not described in the source and should not be assumed.

Source and revision record

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