Using for 's official self-designed RP2040 microcontroller chipEquipped with dual-core ARM M0 + processor, running frequency up to 133MHz flexible clockBuilt-in 264KB of and 2MB of on-chip FlashThe real stamp hole design can be directly welded and integrated into the base plate designed by the userUSB1.1 host and device support 1. Support low-power sleep and hibernation mode2. Can be identified as mass storage via USB for drag-and-drop download of programs3. 29 GPIO pins of RP2040 are led out (20 pins can be led out through headers, the rest can only be led out by welding)4. 2 SPI, 2 I2C, 2 UART, 4 12-bit ADC, 16 controllable PWM channels5. Precise on-chip clock and timer6. Temperature sensor7. 8 Programmable I/O (PIO) state machines for custom peripheral supportType: No WeldedColour: BlueMaterial: PCB Package Contents:1 x Expansion Board Only the above package content, other products are not included.Note: Light 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.