- Pinheaders for connecting with the RPi
- UART interface: easily connects to UART modules such as RS232, RS485, USB TO UART, etc.
- 8I/Os interface: easily connects to modules controlled by I/Os, such as 8 Push Buttons
- SPI interface: easily connects to SPI modules such as AT45DBXX Dataflash, etc.
- I2C interface: easily connects to I2C modules such as PCF8574 Expansion Module, PCF8563 RTC Module, etc.
- Character LCD interface: for connecting character LCDs like LCD1602
- Graphic LCD interface: for connecting graphic LCDs like 2.2inch LCD or LCD12864
- ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
- RPi GPIO connectors
- Power input/output
- 5V DC jack
- Power indicator
- User LEDs
- Potentiometer: for 2.2inch LCD backlight adjustment, or LCD12864, LCD1602 contrast adjustment
- Power switch
- Buzzer
- Joystick: five positions
- Infrared receiver
- LCD selection jumper
- short the jumper for LCD12864
- open the jumper for 2.2inch LCD
- ONE-WIRE jumper
- Buzzer jumper
- Infrared jumper
- User LEDs jumper
- Joystick jumper
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