Speedometer Calibrator
#37
Eagle files for the board. Probably needs a little more love but this is where I'm at right now.
Freeware version of Eagle can be found here: http://www.cadsoftusa.com/download-eagle/?language=en
Files attached.
Let me know if you want anything changed or fixed.
Freeware version of Eagle can be found here: http://www.cadsoftusa.com/download-eagle/?language=en
Files attached.
Let me know if you want anything changed or fixed.
#38
Rennlist Member
Thread Starter
I'll take a look (might take a bit) and hopefully others with more electronics background will do same. Joshua had suggested a diode to protect against crossed power wires, for example, and buffering the output. Neither of which seemed mission critcal to me, but no harm done if you wanted to add. (Assume you know, but the schematic you posted above shows 75c14 rather than 74c14...)
#39
I had to type in the name for that one. Fat fingers. Fixed on the board now.
Diode on the +12 in would be easy. No so sure about how to provide buffering to the ground signal from D7. Any ideas?
Diode on the +12 in would be easy. No so sure about how to provide buffering to the ground signal from D7. Any ideas?
#40
Rennlist Member
Thread Starter
I'd want to test it on a breadboard first but imagine you could use an unused trigger in the 74c14 to buffer the output, so you don't have to add more parts.
944, arduino, ca, calibrating, calibration, calibrator, car, code, county, gps, orange, programming, s2, speedometer, tiny