I solved this originally by having a separate microcontroller monitoring the power in the car. It was permanently connected and only drew about 4 mA. When ACC came on it waited about 15 seconds before turning on the PC power (which allowed cranking time). When ACC went off it sent a shutdown command to the PC then waited about 30 seconds before cutting the PC power (allowing an orderly shutdown).
Yes there are edge cases, but this was a great solution.
Yes there are edge cases, but this was a great solution.
Statistics: Posted by ame — Sun Sep 08, 2024 10:37 pm