Template: CM4 Duino Spec

Overview

I am a CM4 duino basic expansion board, an expansion board that can be used with Raspberry Pi Compute Module 4, and supports 5V DC power supply with Typc-C interface. Onboard HDMI interface, one CSI interface and one USB interface, standard arduino interface, etc...

Precautions for use

1: Do not plug and unplug any device except USB and HDMI when powered on.
2: Type C interface can be used as a power supply or as a USB interface to burn images (need to use BOOT switch to switch).
3: In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
4: When CM4 is in normal use, it needs to provide a 5V 2A power supply for CM4. Otherwise, there may be problems such as automatic shutdown, frequency reduction, and so on.
5: USB2.0 is closed by default, if you want to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt.

Product Size

CM4-Duino

Compute_Module 4

What's on board

Label	Name	Description
1	Power supply/burning interface	5V/2A power supply, can also be used as an eMMC burning interface
2	USB 2.0 interface	USB 2.0 interface, support various USB devices to be inserted
3	HDMI port	HDMI port, supports 4K 30fps output
4	BOOT switch button	ON: Compute Module 4 boots to USB Type-C port OFF: Compute Module 4 boots to eMMC or Micro SD card
5	CM4 Connector	Applies to all versions of Compute Module 4
6	CAM Interface	MIPI CSI Camera Interface
7	User LED	LED blinks and sparkles
8	ADC Chip	8-bit ADC, I2C interface, 8-channel ADC chip ADS7830
9	User Button	Button Module
10	GPIO	Arduino interface GPIO
11	Function Switch	For details, please refer to the function pin description
12	M.2 Interface	A module that supports NVME SSD solid state or other PCIE channels
13	Micro SD Card Slot	For inserting a Micro SD card with the system to start the Compute Module 4 Lite

Hardware Connection