These 40pin GPIO port can be used as GPIO/I2C/SPI/UART/ADC for electronics and robotics.
The 40 GPIO pins on an ODROID-C1 are a great way to interface with physical devices like buttons and LEDs using a lightweight Linux controller. If you’re a C/C++ or Python developer, there’s a useful library called WiringPi that handles interfacing with the pins. We’ve already ported the WiringPi v2 library to ODROID-C1.
Please note that pins #37, #38 and #40 are not compatible with Raspberry Pi B+ 40pin header. Those pins are dedicated for Analog input function.
Note that all the GPIO ports are 3.3Volt. But the ADC inputs are limited to 1.8Volt.