odroid-hc4:application_note:application_note [ODROID Wiki]

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======= Application note ======
====== Hardware Side ======
  * [[odroid-hc4:application_note:led_control|How to control LEDs]]
===== Adding External Connector =====
==== Alternative heartbeat LED ====
If you want to remap the blue heartbeat LED to other GPIO, refer this great instruction.

[[common:application_note:external_connector:alternative_heartbeat_led|Alternative Heartbeat LED]]
===== Using Internal Peripherals =====
==== GPIO ====
  * <fs x-large>[[odroid-hc4:application_note:oled|OLED display]]</fs>

====== Software Side ======
  * [[odroid-hc4:application_note:software:set_display_mode| How to set display resolution and modes]]
  * [[odroid-hc4:application_note:software:irremote_wakeup_hc4| Wake Up using IR Remote Controller]]
  * [[odroid-hc4:application_note:lirc:lirc_ubuntu18.04| Support Custom Remote Controller with LIRC (IR RX)]]
  * [[odroid-hc4:application_note:software:wake-on-lan| Wake-On-Lan]]

====== Misc ======
  * [[odroid-hc4:application_note:misc:board_identity| How to check board identity]]
  * [[odroid-hc4:application_note:misc:dmesg_on_display| How to active dimes on display]]