Digital Dash Cluster (Page 3/3)
rbell2915 FEB 16, 07:23 AM
Nice job, that looks great!
Mickey_Moose FEB 18, 01:37 PM
Build your own using a Raspberry Pi. Search for PiDash for all kinds - you can also buy round display screens as well.



You can see a round screen one here: https://www.facebook.com/ma...os/10220862660978366

[This message has been edited by Mickey_Moose (edited 02-18-2021).]

Oregon88 FEB 18, 11:22 PM
dude this is epic. Can't wait to see the next update
statue4 MAR 19, 11:15 AM
So, I was able to get the speedometer and odometer to work. In a previous post I mentioned making something with an Arduino to get GPS signal and output a sine wave to the cluster. Instead of spending time tinkering on such a project, I just bought a commercially available unit. I ordered Intellitronix S9020 from Summit. Install was super easy. The hardest part was routing the antenna wires through the front firewall (is it called a firewall? The wall between the cabin and frunk). The unit consists of a main board and an external GPS antenna. Only three wires to be connected: ignition power, VSS signal, and, of course, ground. The unit I got works with both 4000 pulse per mile (ppm), 8000ppm and 16000ppm, and has a wire for each signal. For my install the 8000ppm and 16000ppm wires are not used. The antenna must be within view of the sky. I mounted it on the windshield wiper cowl. The unit exceeds my expectations. I was thinking it would have noticeable lag, like when a smartphone navigation app displays your speed in the corner. There is no noticeable lag. It behaves just like a regular speedometer. Sometimes, albeit rarely, it will take a few minutes to acquire the GPS signal when starting up. If you are out of view of the sky for a short time, like a large freeway underpass, it will be a little inaccurate until you get back "outside." If you are out of view for a long time, like a tunnel, it will eventually just show zero until you are "outside" again. Clouds have no affect on GPS signal.

Oddly, I was getting speedometer reading, but my odometer was not counting up, even though there is only one VSS wire into the cluster for both speedo and odo. It doesn't really make sense that one would work and the other wouldn't. To test, I took the VSS out of the transmission and mounted the shaft in an electric drill chuck. With the key in the on-position and the drill spinning, the speedometer AND the odometer counted up. I thought perhaps something about the cluster electronics didn't like the signal it got from the GPS unit... The odometer started working, however, once I disconnected the electrical connector from the old VSS. Previously I had had BOTH the GPS unit and the VSS going to the instrument cluster, figuring it wouldn't matter since the VSS drive gear is broken anyways. I guess even though it wasn't rotating and wasn't producing a signal, the cluster didn't like having both of them connected. With only the GPS unit connected to the instrument cluster, both the speedometer and the odometer work accurately.

I would recommend a GPS speedometer sender to anyone who is thinking about it. They don't need calibration and are independent of transmission, final drive ratio, and tire size. Including taxes and shipping it was like $130, which really isn't that bad.