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====== Single board ARM computer Odroid-C1 ======

====== Expansion Connectors ======
The Odroid-c1 povides one 40-pin dual row expansion header "**J2**".
The location and pinout of these connectors is illustrated blew.\\ All signals on expansion headers are 3.3V except Analog input signal.
----
**J2 - 2x20 pins**
^ Pin Number ^ Expansion Net Name ^ Description ^ Pin Number ^ Expansion Net Name ^ Description ^
|1|3.3V Power|  |2|5.0V Power| |
|3|I2CA_SDA| Export GPIO#74  |4|5.0V Power| | 
|5|I2CA_SCL| Export GPIO#75 |6|Ground| |
|7|GPIOY.BIT3| Export GPIO#83, Wiring Pi GPIO#7|8|TXD1|Export GPIO#113|
|9|Ground| |10|RXD1|Export GPIO#114|
|11|GPIOY.BIT8| Export GPIO#88, Wiring Pi GPIO#0|12|GPIOY.BIT7|Export GPIO#87, Wiring Pi GPIO#1|
|13|GPIOX.BIT19|Export GPIO#116, Wiring Pi GPIO#2|14|Ground| |
|15|GPIOX.BIT18|Export GPIO#115, Wiring PI GPIO#3|16|GPIOX.BIT7|Export GPIO#104, Wiring Pi GPIO#4|
|17|3.3V Power||18|GPIOX.BIT5|Export GPIO#102, Wiring Pi GPIO#5|
|19|GPIOX.BIT10(MOSI)|Export GPIO#107, Wiring Pi GPIO#12, PWM1|20|Ground| |
|21|GPIOX.BIT9(MISO)|Export GPIO#106, Wiring Pi GPIO#13|22|GPIOX.BIT6|Export GPIO#103, Wiring Pi GPIO#6|
|23|GPIOX.BIT8(SPI_SCLK)|Export GPIO#105, Wiring Pi GPIO#14|24|GPIOX.BIT20|Export GPIO#117, Wiring Pi GPIO#10|
|25|Ground| |26|GPIOX.BIT21|Export GPIO#118, Wiring Pi GPIO#11|
|27|I2CB_SDA| Export GPIO#76 |28|I2CB_SCL| Export GPIO#77 |
|29|GPIOX.BIT4|Export GPIO#101, Wiring Pi GPIO#21|30|Ground| |
|31|GPIOX.BIT3|Export GPIO#100, Wiring Pi GPIO#22|32|GPIOX.BIT2|Export GPIO#99, Wiring Pi#26|
|33|GPIOX.BIT11|Export GPIO#108, Wiring Pi GPIO#23, PWM0|34|Ground| |
|35|GPIOX.BIT0|Export GPIO#97, Wiring Pi GPIO#24|36|GPIOX.BIT1|Export GPIO#98, Wiring Pi GPIO#27|
|37|ADC.AIN1|10bit ADC#1 (0~1.8Volt)|38|1.8V Power|For ADC reference voltage. Output!|
|39|Ground| |40|ADC.AIN0|10bit ADC#0 (0~1.8Volt)|

[[http://odroid.com/dokuwiki/doku.php?id=en:c1_hardware|Source]]

===== I2C =====

  modprobe aml_i2c