Can anyone build me a 0-5v to PWM(injector frequency) converter?
Found one for cheap on another board, but missed it. Just wondering if there are any out there. Only thing I can find it $100 plus.
You could buy a $30 Arduino Uno and write a very small program that reads an analog voltage and scales it into a PWM output. That's the first thing I think of but I'm sure there's an IC or 2 that would do it in hardware
Or a Teensy http://www.pjrc.com/teensy/
Can you give me some more specifics of what you are looking for.
You want it to take 0-5v and scale that to pwm. How much accuracy are you looking for? 0-5v in 255 steps?
As stated above and arduino will do it. I will even write the code for you or help you with it.
Take the 0-5v range of an automotive sensor, MAP, TPS, etc, and convert it into a fuel injector signal. Hook it up to the MAP sensor, and have it output a pulse to signal a pump to run. I was told to look for a $100 Coolingmist smart injection box, or Aquamist has one, also $100 USD, wanting to see if it can be done cheaper.
Any microcontroller development board, a resistor, and about six lines of code. With an enclosure... Maybe $40, but $20 is possible.