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Originally Posted by WindyDrew
I want to signal high on the led pin (change the LED pin to Digital input pin) is forward in normal state and then signal low would invert the throttle.
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Just to make sure I understand - the pin to be used is pulled high and will be grounded to engage the reverse switch. Right?
Forward is 'normal' so that a faulty switch does not reverse the car while driving down the interstate at 70 mph.
EVTV has described that the Tesla needs the brake engaged and the speed within a few rpm of 0 before you can change from Park to Drive, Drive to Reverse, Reverse to Park, etc.
Maybe 1 extra input for the brake? It would be tied high, Active low, grounded by the switch.
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I'm sure there needs to be some safety built into the code as well.
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Yup - I think so.
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The wiring is planned out that we take +5v from supply side of R53 with a 4.7kOhm resistor to the left side of LED. R57 populated with 1kOhm resistor and a 0.1mF from the microprocessor side of R57 to the ground pin at the end of the microprocessor 2 pins to the right. LED left and right to the momentary switch. How does that sound to you guys?
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One LED lit to show high (normal) and one to show low (reverse)?
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Can you give any thoughts to the safety details of this added code?
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I have no experience with the code - I will need to look through it eventually. But I'm not much help right now.