RPM and Temperature telemetry #176
Description
Is there already an issue for this?
- I have searched the issues and there is no existing issue for this feature request.
Is your feature request related to a problem?
Not really. Its a new feature.
Describe the solution you'd like
Would it be possible to add RPM and Temperature as part of the telemetry sent by CRSFforArduino to the radio. For testing purposes, we just pass the value of the RPM or Temperature in the sketch that will be sent to the radio.
Describe alternatives you've considered
Radiomaster has just release ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers. Would it be possible to connect the Rx/Tx output of this sensor to one of the UART used for CRSFforArduino to send the RPM to the radio? If this is possible, I think its a quicker solution. And we can daisy chain other sensors that is not currently supported by CRSFforArduino. If not, can I suggest you to enhance CRSFforArdino to accept additional sensors from one of the UART and send telemetry received in that UART to the radio?
To date, they have not release a sensor for Temperature.
Additional context
I find these two telemetry (RPM and TEMP) are cricial because while flying and the engine overheats, an alarm can be set to tell the pilot to land before the engine quits. The RPM is also critial during engine tunning and setting the idle speed. Petrol engine manual states that to tune the high end needle, move the throttle stick to max and adjust the high speed needle until you get MAX RPM without overheating the engine.