There 2 ADC input ports on the 40-pin header.\\
ADC.AIN0 : Pin #40\\
ADC.AIN1 : Pin #37\\


You can access the ADC inputs via sysfs nodes.
<code>
/sys/class/saradc/ch0 
/sys/class/saradc/ch1
</code>

ADC's maximum sample rate is 50kSPS with 10bit resolution (0~1023).\\ 
But the actual sample rate is 8kSPS if you access it via sysfs due to the limited file IO speed.

The ADC inputs are limited to **1.8Volt**. If the input voltage is higher than 1.8Volt, you will fry your ODROID board.

This WiringPi example code shows how to access the ADC for C/C++ programming.\\
[[en:c1_tinkering|Introduction C Tinkering Kit on Ubuntu]]

Library Source code
[[https://github.com/hardkernel/wiringPi/blob/master/wiringPi/wiringPi.c|WiringPi port for ODROID-C0/C1/C2/XU3/XU4]]