Simple project with the C1 Tinkering Kit.
19 LEDs + CdS light sensor will show you how ADC and LED work.
The CdS is connected to the ADC #0 port with a 10Kohm ground bias. 3.3V - CdS - Cds - ADC - GND
The LED is connected to the GPIO via 330ohm in serial. GPIO - LED(A+) - LED(K-) - 330ohm - GND
Connect it to your ODROID-C1 with the Flat cable.
The example code and library can be found in our WiKi and Github repo.
Source Code of Demo video.