I have a 2002 car with EDC15 ECU, I want to read RPM and Speed throw ECU. I did get RPM wire (7volts) and Speed wire (11volts) directely from ECU and linked it to arduino nano using resistances to reduce voltage. when I compile I get always ZERO for both speed and RPM. Any suggestions please. Tha…

[image] dhamu: Use digital pins that support interrupts, like D2 or D3 on Arduino Nano. [image] makavali: I will use D9 and D10 that are free on my arduino There are only certain pins that can be used for interrupts. There is a list of of the pins that can be used at: docs.arduino.cc/…

Read RPM and SPEED from ECU EDC15

Projects General Guidance

lastchancename August 8, 2025, 11:33am 2

Please show your circuit, particularly the inputs

Topic		Replies	Views
help in making engine digital RPM meter Programming	57	36150	May 5, 2021
In search of a better RPM readout... Troubleshooting	17	14463	May 6, 2021
Hardware timer and interrupts issue Programming	15	6695	May 5, 2021
reading rpm signal from cpu fan Interfacing	31	35482	May 6, 2021
Leer rpm Hardware	7	1504	May 7, 2021

Read RPM and SPEED from ECU EDC15

Related topics