I need an Arduino backed Odometer for a car I'm building, I don't have time to do it myself. Needs to have a small 7 segment 6 digit display, take the VSS input from my transmission, write that data every 25-50 meters to an eeprom or something. Needs to be somewhat compact, in other words not 5 different breadboards, with loose wire etc.Input is VSS from Miata 6 speed.We can discuss compensation privately. Paul
Writing it every 100 meters would keep you going for 100 x 100,000 meters = 10,000 km (that 100,000 writes is guaranteed - in practice it probably lasts a lot longer, but how much longer can't be predicted).Doing basic wear levelling (it's divided in blocks, iirc 8 bytes each giving 1024 bytes of EEPROM 128 sectors) and you could do 1,280,000 km before you reach the guaranteed minimum lifetime. Every new write is the next sector, upon startup just read them all, use the highest number, and go from there.Flash (sd cards) doesn't last that long either.
Any one want to build an odometer with 6 opto isolator 12v inputs
with ~3" OLED display?
Might as well add an LED sequential shift light based on a tach signal.
No problem here.Any preference? As in, lighting more LEDs as the rpm increases? Sure. Should be possible to draw as bar on the LCD as well.