UART is accessible on pin 6 (GND),8 (TX) and 10 (RX) and with unusual speed: 1500000 Enable video and 3D acceleration flash the 128M SPI memory to also boot from USB or PXE (it if goes wrong, follow these instructions) short-pressing (~1s) the power button turns the board on, long-pressing it (~3s) turns it off. If it …
For HC1 and HC2 we provide specially optimized config (for kernel 4.14.y or higher) which has to be applied manually. This results in shorter boot time and lower consumption. Run armbian-config utility and go to section system -> DTB and select optimized board configuration for Odroid HC1. The same config is valid for HC2 and …