- Sun Nov 20, 2022 8:15 am
#59696
First of all, thx for this community and the opensource idea of speeduino!
I have a motorcycle engine laying around which i want to run with speeduino (V.04)
ECT, IAT, TPS all work but I cant the map reading right.
I have a external map, 3 wires. 5V from arduino, ground and the signal to speeduino.
According the manual the voltage should be about 3.5V at atmospheric pressure.
All I get is 1.76V. When I disconnect the mapsensor and measure between signal and ground the voltage is again 1.76V.
I've changed from a shared ground and 5V to a different pin on speeduino but it doesnt help.
When I run the mapsensor alone with a separte arduino I get a correct 3.5V signal.
What am i forgetting?
Edit: I've removed all the wiring. When given 5v and ground to external map, signal voltage is 3.5V.
When connected to speeduino and I measure voltage on pin 11, 1.7V.
I have a motorcycle engine laying around which i want to run with speeduino (V.04)
ECT, IAT, TPS all work but I cant the map reading right.
I have a external map, 3 wires. 5V from arduino, ground and the signal to speeduino.
According the manual the voltage should be about 3.5V at atmospheric pressure.
All I get is 1.76V. When I disconnect the mapsensor and measure between signal and ground the voltage is again 1.76V.
I've changed from a shared ground and 5V to a different pin on speeduino but it doesnt help.
When I run the mapsensor alone with a separte arduino I get a correct 3.5V signal.
What am i forgetting?
Edit: I've removed all the wiring. When given 5v and ground to external map, signal voltage is 3.5V.
When connected to speeduino and I measure voltage on pin 11, 1.7V.