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 power supply or as USB interface to burn image (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 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 核心板
What's on board
No. | Component | Description | |
1 | CM4 socket | Suitable for all variants of Compute Module 4 | |
2 | 40PIN GPIO | Connect HAT module | |
3 | Gigabit Ethernet connector | Dual RJ45 Gigabit Ethernet ports, support 10/100/1000M network access ETHERNET 0: CM4 native network port ETHERNET 1: USB extended network port | |
4 | USB 3.2 | 3-way USB 3.2 Gen1 interface, support various USB device insertion | |
5 | HDMI | Dual HDMI ports, support dual 4K 30fps output | |
6 | CAM | Dual MIPI CSI camera interface | |
7 | DC Power | 7~36V DC wide voltage power supply | |
8 | Dual LED | Red light: Raspberry Pi power indicator Green light: Raspberry Pi working status indicator | |
9 | Micro SD | Used to connect the Micro SD card with the system to start Compute Module 4 Lite | |
10 | FAN | Convenient access to cooling fans, support speed regulation and speed measurement | |
11 | DISP0 | MIPI DSI Display interface | |
12 | USB SLAVE | Compute Module 4 eMMC Version can burn the system image through this interface | |
13 | RTC Battery connector | Can be connected to CR1220 button battery | |
14 | RTC Interrupt pin switching | PI-RUN: RTC trigger interrupt CM4 restart GN-EN: RTC trigger interrupt CM4 power off D4: RTC trigger interrupt D4 pin | |
15 | IO-VREF selection | CM4 IO logic voltage switch 3.3V or 1.8V | |
16 | FAN power supply options | can choose 5V or 12V voltage to drive the fan | |
17 | System function switch | BT_DIS: Bluetooth disabled, only for CM4 version with antenna WiFi_DIS: WiFi disabled, only for CM4 version with antenna WP_DIS: Start mode switch, only For use without EMMC boot or SD boot | |
18 | RTC/FAN I2C bus selection | SDA0/SCL0: I2C-10 and CSI/DSI shared GPIO3/2: I2C-1 and 40PIN shared | |
19 | RTL8153 | USB Gigabit LAN Chip | |
20 | EMC2301 | Fan controller, control fan speed, measure fan speed | |
21 | VL805 | USB 3.0 HUB |