Source code for Yaris Tachometer

[metalshark]

Originally Posted by CTScott

Switch to a Microchip PIC microcontroller. Same or better functionality for <$5 max and many of the PICs can directly drive LEDs with the outputs.

For example the PIC16F57 is $1.55 and has 20 I/O Pins and runs at up to 20mHz. If you're not comfortable with C or assembly programming, there is even a basic compiler for the PICs.

http://search.digikey.com/scripts/Dk...IC16F57-I/P-ND

Thanks for the info. If I wanted to sell these I'd do as you suggest. I'd rather just release the info as public domain/open source and move on. Porting to the Propeller with tach projects would be something I'd do just to learn Spin and cog assembler. I've programmed in C and assembler in the past so that's nothing new. I'm also on DIYelectriccar.com. On there I advocate using a Propeller to build an AC drive for an electric car. I've been building files on IGBTs, fiber optics, true vector drives and so-on. By building up my skill set I'll have the drive and car ready about the time the lithium batteries are available at a competitive cost. Now a good set runs $20-25K. Not something I'll do while gas costs just $2/gallon.