1 emulating speed sensor signal Wed May 22, 2024 12:24 pm
49BMWK1
active member
I am building a K dashboard tester powered by an ESP32.
For almost all signals, it is either a ground signal, or a 12V signal, so just have to translate 12V to 3.3V digital signals, and vice versa.
But for the speed, i fail to to generate an adequate signal. I know the sensor is a passive hall effect, which sends a relatively small voltage to the dash circuitry ( about 250mV ?)
All my tests with ESP32 IOs ( PWM signal, DAC output) do not make the needle moving....
I have tested with Caramba and my computer header output, it works....
My question is: does anybody already emulated a speed sensor with an Arduino, ESP32 or other microcontroller ?
For almost all signals, it is either a ground signal, or a 12V signal, so just have to translate 12V to 3.3V digital signals, and vice versa.
But for the speed, i fail to to generate an adequate signal. I know the sensor is a passive hall effect, which sends a relatively small voltage to the dash circuitry ( about 250mV ?)
All my tests with ESP32 IOs ( PWM signal, DAC output) do not make the needle moving....
I have tested with Caramba and my computer header output, it works....
My question is: does anybody already emulated a speed sensor with an Arduino, ESP32 or other microcontroller ?
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Triumph Bonneville 650cc 1970, Moto Guzzi Le Mans III 1978, 3x BMW K1 1989/90, K1200RS 1997, K1200LT 1999