Today, I released, on GitHub, the new SW (SW 1.0 beta 5) for Fuelino Proto3. This software includes quite all functions, except for the IMU sensor signal acquisition, which is available, but still requires some tuning (I need to properly calibrate the analog filter, to smooth the noise created by engine vibrations, and also find a simple procedure to calibrate "on the desk" the sensors signals offsets and gain). The following video has been taken yesterday. I used RaceRender3 to overlay data to the video, which has been taken using a GoPro Hero Session 4.
Fuelino is an "open source" data-logger and electronic fuel injection controller for motorcycles/vehicles equipped with engines having up to 2 cylinders (2 injectors). It is based on Arduino Nano, a cheap development board equipped with Atmel ATmega328p microcontroller. In the most simple configuration, it acquires signals from the original ECU, such as injector command, throttle position sensor, lambda sensor signals, and is capable of modifying, in real-time, the injector command. This becomes necessary, for example, after upgrading some engine parts, such as installing a bore up kit, a new camshaft, air filter, or racing exhaust.
By connecting and additional Micro SD card module (example: Catalex Micro SD) through SPI, it is also possible to log binary data, which can then be converted in Excel CSV format, using an external PC. It is also possible to expand the logging capabilities by adding an IMU (Inertial Measurement Unit), such as the MPU-6050, which acquires acceleration and gyroscope info; or also adding a GPS module, such as the Ublox Neo 6M, to acquire the instant position, in terms of latitude and longitude, UTC date and time, and speed (km/h).
This new software has been tested on Fuelino Proto3, on my motorcycle, a Honda CBR125R equipped with Athena bore up kit (166cc), Akrapovic racing exhaust, and conical air filter. The higher engine displacement, together with other modifications, required me to calibrate a fuel injection time increment of about 25%. For more info about Fuelino Project, please check here.
