Waveshare Compute Module IO Board Plus for Raspberry Pi CM3 CM3L CM3+ CM3+L Overview The Compute Module IO Board Plus is a development board which you can plug a Raspberry Pi Compute Module into, and make use of the resources of Pi more flexibly. It is compatible with the Compute Module IO Board V3 from the Raspberry Pi Foundation, along with various common use components. Compute Module IO Board Plus Features 1. Compatible with the Compute Module IO Board V3 from the Raspberry Pi Foundation 2. Raspberry Pi GPIO header, for connecting sorts of Raspberry Pi HATs 3. Arduino connectivity, also supports Arduino shields 4. 1-WIRE interface, for connecting single-bus devices like DS18B20 5. 4x keys, 4x LEDs, 1x Buzzer, for IO testing 6. Onboard USB HUB, allows connecting more USB devices 7. IR receiver, IR remote control is available 8. Onboard USB TO UART, for serial debugging 9. Sensor interface 10. 10-bit ADC, 38KSPS, 11-ch (6-ch for Arduino interface, 5-ch for sensors) 11. 16-bit DAC, 2-ch 12. Onboard RTC, one of the most common and useful functions What is on the Compute Module IO Board Plus 1. Compute Module interface: for connecting Compute Module (CM3 CM3L CM3+ CM3+L) 2. Compute Module GPIO header: breakout all the Compute Module pins 3. Raspberry Pi GPIO header: for connecting Raspberry Pi HATs 4. CSI interface: camera ports, for connecting Raspberry Pi Camera 5. DSI interface: display ports, for connecting Raspberry Pi LCD 6. HDMI port 7. USB ports: for connecting USB devices 8. USB SLAVE interface: allows you to burn system image in to Compute Module 3 9. USB TO UART interface: for serial debugging 10. Arduino header: for connecting Arduino shields 11. ADDA inputoutput screw terminals 12. 1-WIRE interface: for connecting single-bus devices like DS18B20 13. Sensor interface 14. Power port: 5V 2.5A 15. FE1.1S: USB HUB chip 16. 12MHz crystal 17. CP2102: USB TO UART converter 18. Micro SD card slot