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
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 |