- UART is accessible on pin 6 (GND),8 (TX) and 10 (RX) and with unusual speed: 1500000
- Video and 3D acceleration addon
- Clocking to maximum safe CPU speed (1.51Ghz) is possible this way:
sed -i "s/MAX_SPEED=.*/MAX_SPEED=1510000/" /etc/default/cpufrequtils service cpufrequtils restart
Make sure to install large heatsink!
- In case you face stability issues, check this
- Some eMMC chips might have troubles.
- In case you experience troubles with networking
- Report all issues here.
To boot the image from USB flash:
- Write the image to a USB flash drive
- Insert the flash drive into the USB3.0 port
- Load the modified u-boot (from the Armbian image) using the UART method
- Stop the default boot sequence
- Execute in u-boot prompt:
run usbboot
To flash the image to eMMC:
- Boot the image from USB flash
- Write the image to eMMC using
dd
or other methods - Mount the eMMC partition and add a line
emmc_fix=on
to/boot/armbianEnv.txt
file – this changes the DT during boot to switch from SD with card detect switch to a non-removable eMMC. - Unmount the eMMC partition and reboot
Please refer to this forum thread for the USB boot details and this thread for a discussion of known eMMC issues.
- Onboard wireless module (XR819) has poor software support so wireless connection issues are expected
- Orange Pi Zero rev 1.4 reports false high CPU temperatures.