We designed the following ports:
USB A
HDMI
Micro USB for power
Micro USB for data (support OTG )
CSI for Camera
PH2.0 battery port
Micro SD card slot
On/Off Switch
AV slot (only reserves welding position for AV)
[[Compatible with CM3 ALU Case | Ultra Thin Aluminum Alloy]
Features:
You can use CM3 or CM3L to implement Raspberry Pi 3B/3B + function.
The GPIO expansion from Raspberry Pi 3B: Standard HAT 40-pin GPIO output and additional extension 14 PIN GPIO (fully compatible with Raspberry Pi 3B / 3B +).
Compatible with various expansion boards of Raspberry Pi
Support power board via battery can read battery capacity through programming
Support RTC (need to power the board via PH2.0 battery port)
Supports CSI / DSI
Supports OTG interface (via Micro USB port for data)
Support CM3 (build with 4GB NAND flash), support CM3L (TF card slot may be used in place)
About RTC Function
The RTC clock clip is DS3231 and you need to use an external battery to power RTC through PH 2.0 battery port. (At the same time, the battery can also power this IO board)