NEWS FEB.2019: Please update to the last version V79R16C1. Major correction for RPM below 1500RPM Huge improvement of precision. (10times better!) CHARACTERISTICS. Adaptable to other single-cylinder bikes. Accuracy (0.15°/8000RPM). Software source unavailable (only .HEX). Advance curve is in EEPROM and can be freely modify Need a working charging coil for the capacitor. Need a 6 or 12v battery DOWNLOAD PIC 16F628A 600 to 30000rpm Make the PCB: PCB Eagle .