Rainbow Bot

The base robot with an 8x8 NeoPixel matrix on top.

Kit photo coming soon

 

Key Features

  • Uses the Raspberry Pi Pico RP2040
  • Uses the WS2812B NeoPixels

Key Benefits

  • Free, open lessons. The STEM Robots textbook has the kit page, wiring, and MicroPython code.
  • Budget. About $27–$31 (base robot $19 plus an 8x8 NeoPixel matrix, about $6–$10 on eBay and about $12 on the Moving Rainbow page).

Parts

Part (price)Role
Raspberry Pi Pico ($4)Microcontroller
WS2812B NeoPixelsLEDs
830-Point Breadboard ($1.10)Breadboard
Micro-USB Data Cable ($2.50)Power and programming cable

Microcontroller listed first. Prices shown only where known; see the source book for quantities, wiring, and current prices.

About this kit: The colors and patterns change as the robot changes direction.
Source: STEM Robots