RP2040:bit Board is a pocket-sized microcontroller, an ARM development board for youth programming education, only half the size of a credit card (4cmx5cm), and can be used for cool creations, such as programming , musical instruments, robots Control, scientific experimentation and wearable device development, etc. The back of the motherboard retains the PICO interface, which can be compatible with PICO expansion boards, and can also be compatible with -bit compatible modules for higher compatibility. Based on the RP2040 processor of , onboard W25Q16 16M flash memory chip. Onboard 5x5 LED dot , each LED light can be programmed individually. There are two programmable buttons onboard, which can be used to control or pause and skip in the playlist. Type: Development Board Model: RP2040:bit Board Processor: RP2040 Colour:black Material:PCB Package Contents: 1x RP2040:bit Board 1x :bit-GPIO-Expansion-B 1x -USB cable 3x Alligator Clip Wires 3x header Pin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.