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Midnight Sun's current electrical systems uses 4 main system has 5 types of ECUs to control the primary vehicle systems:
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Lights: Routes and controls power to the vehicle headlights, braking lights, and turn signals, by receiving commands from the driver controls board.
Motor controllers: Routes and controls power to vehicle motors (sources current into battery pack during regenerative braking), by receiving commands from the driver controls board.
Our electrical system also has a non-critical ECU for telemetry, which is equipped with a radio transmitter to broadcast vehicle diagnostic information to a team member in a chase vehicle during a race.
All ECU boards are except for the motor controllers are designed and manufactured by the electrical team, which also contains a large software group dedicated to writing the embedded firmware for all ECUs. Midnight Sun has a relationship with a high-quality PCB fab located in Markham, but also uses various other fabs with faster lead time. All soldering is done by team members, which requires good training to ensure reliable solder joints are made consistently on our boards (debugging hardware manufacturing problems later takes far longer than getting it right the first time).
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