Arduino-Flex-Fuel
Arduino based flex fuel signal converter This program will sample a 50-150hz signal depending on ethanol content, and output a 0-5V signal via PWM. The LCD will display ethanol content, hz input & millivolt output
Connect PWM output to NEMU Breakoutboard on ADC0-3 (or your engine management of choice), and tune the "FLEX FUEL SETUP" tab accordingly. NOTE: Lowpass filter to be used on output.
Input pin 8 (PB0) ICP1 on Atmega328 Output pin 3 PWM
If LCD Keypad shield is used, solder jumper from Pin 8 - Pin 2, and snip leg from pin 8 (see docs folder)
Example of project in use: https://www.youtube.com/watch?v=pQKVnQxQpwU