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When programming the ATmega for the first time, the following fuses must be changed.

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Warning

If vehicle is behaving irregularly i.e. servo steering is acting erratic, LEDs timing appears off, this is most likely due to an issue with the clock.

Check:

  1. Fuse LOW.CKDIV8 (should be unchecked), LOW.SUT_CKSEL (should be Ext. Cyrstal Osc.: 8.0- MHz; Start-up time: 16CK + 65ms)
  2. Check external crystal oscillater on bottom side of board using oscilloscope (should be 16MHz)


Tests

By setting a jumper, a test mode is activated. This allows testing the inputs and outputs without the MLC.

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