Hi there,
I'm just following up on my implementation of your trip computer using the sensor discussed before. I've had some time away from it on other jobs, but I finally got round to fitting it into the vans instrument cluster (it fits nearly perfectly where the original digital clock went, with a little modification to the window, and a 3d printed bracket).
Everything works perfectly, except the crucial speed input. I'm supplying 5V to the green speed wire, with a 3.9K pull-up resistor, as previously discussed. On the multi meter, I'm showing a good 5.17V pulse, with a low of below 1mv, so the signal seems to be strong. But I'm getting no response from the trip computer to this signal. I've tried dropping the pulses per km in the software to only 100 to make it more sensative, but nothing. Am I missing something? What voltage is the speed wire expecting to see? 5v or is it a full 12v?
Hope you can help. I'm so close, just need that speed signal to work.
Mark
p.s. I'll post images up once all together, so people can see the foot etc.