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You can select whatever checks you prefer by adding together the values of each check type to set this parameter.

For example, to only allow arming when you have GPS lock and no RC failsafe you would set ARMING_CHECK to 72.

This is a complete list of the parameters which can be set via the MAVLink protocol in the EEPROM of your APM to control vehicle behaviour.

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Overall board orientation relative to the standard orientation for the board type.

This rotates the IMU and compass readings to allow the board to be oriented in your vehicle at any 90 or 45 degree angle. After changing you will need to re-level your vehicle.

For aircraft with low C batteries it may be necessary to raise this in order to cope with low voltage on long takeoffs. Enable flow control on serial 1 (telemetry 1) on Pixhawk.

You must have the RTS and CTS pins connected to your radio.

For most users it is recommended that you set this to 1 to enable all checks.

Accelerometer error threshold used to determine inconsistent accelerometers.

Note, if setting this parameter to 0 a reboot is required to arm the plane. This is a bitmask of checks that will be performed before allowing arming.

Also note, even with this parameter at 0, if ARMING_CHECK parameter is not also zero the plane may fail to arm throttle at boot due to a pre-arm check failure. The default is no checks, allowing arming at any time.

Compares this error range to other accelerometers to detect a hardware or calibration error.

Lower value means tighter check and harder to pass arming check. Setting this to 0 ~ 13 will enable battery voltage sensing on pins A0 ~ A13. On the Pixhawk, Pixracer and NAVIO boards it should be set to 2, Pixhawk2 Power2 is 13.

For the 3DR Power brick on APM2 or Pixhawk, this should be set to 10.1.

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