• HDMI Overscan setup
• Display Auto detection
• HDMI PHY Manual Setting using modeline information

CVBS

S/PDIF

Power Switch

Alternative Power Input

If you want to remap the blue heartbeat LED to other GPIO, refer this great instruction.

Alternative Heartbeat LED

• GPIO default check program
• Access the 40pin GPIO on Linux/Ubuntu
• Access the 40pin GPIO on Android
• App launch via GPIO on Android
• Power Off and Wake Up using GPIO Key Button
• Android application launching with a GPIO trigger
• Rotary Encoder example on Android
• Wiring PI

Behind peripherals examples are controlled via the GPIO.

• I2C
• PWM
• UART
• 1-Wire
• ADC
• IRQ
• SPI
• PPS
• IR

• IR Remote Controller (Android)
• Support Custom Remote Controller with LIRC (IR RX)
• Support GPIO based IR Receiver (IR RX)
• Support GPIO based IR Blaster (IR TX)
• Wake Up after Power off using IR remote and HDMI CEC

• How-to boot Linux over NFS
• How-to boot Linux over TFTP (W.I.P.)
• Board Identification
• Running Ubuntu 16.04 Cloud image using KVM/ARM
• Tips for Custom Boot Logo
• Blue LED off
• Make the ODROID Android as Bluetooth Audio receiver(Speaker)
• DDR clock adjustment by updating boot
• How to set max cpu frequency and cores
• Watchdog on Linux/Ubuntu
• boot.ini Configuration on Linux/Ubuntu
• How to turn off your monitor
• Android Auto
• Building an Android TV box on a C2
• How to add more SPI slave devices with SS and IRQ

• Adjust Display refresh rate (Kodi)
• HDMI Passthrough (Kodi)