Software Defined Radio: The AVC has nearly 100 teams, all with their own radios and telemetry systems.Encryption: This allows me to rest easy that no one else (ok I’m sure someone could hack it) will power up/down my car.I use our SparkFun RFM69 Breakout for a variety of reasons: A handful of 3-Pin and 2-pin JST Jumper Wire Assemblies.The VCU itself (the Pro Mini connected to the RFM69 breakout board) can be seen in the lower right corner. The Beefcake Relay can be seen next to the larger, blue, 24V/80A relay. I broke the killswitch system into two parts: the Vehicle Control Unit that lives on the vehicle and the Remote Control Unit that the human holds in their hand.Ĭlick on the image to see the electronics without highlighting If the link is re-established, then start in safety-shutdown mode.If the remote fails to hear a response from the vehicle (out of range), then go into disconnect mode (blink all three LEDs).If the vehicle fails to hear from the remote after a certain length of time the vehicle should go into safety-shutdown (de-energize the cut-off relay causing engine to brake).This will be connected to the master controller to let it know that the race is in “yellow flag” mode. If user presses the yellow button the system should assert a signal pin. If user presses the red button the system should de-energize the cut-off relay shorting the + and - of the motor causing the motor to brake.If user presses the green button the system should energize the cut-off relay allowing power to flow to the motor.These should fulfill the kill switch safety requirements of the A+PRS rules. Here are the design requirements for my system.
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