Fuelino proto1 schematic and board

Few months ago I decided to start with this project: Fuelino. I was looking for a customized ECU (Engine Control Unit) piggyback with the purpose of adapting my motorcycle (Honda CBR125R) to the custom parts which I installed on it (Athena 166cc bore up kit, conic air filter, Akrapovic racing exhaust system, and so on). I noticed, on the market, some products which could achieve my target, for example a Power Commander unit. However, I noticed that the price was very high (some hundreds of Euro). Moreover, I did not want to just modify the injector fuel time, but also I wanted to be able to log data from my motorcycle, such as engine rotation speed, injection time, throttle position sensor voltage, lambda sensor signal, and so on.

This is the main reason why I decided to create my own unit (Fuelino). The name "Fuelino" comes from "Fuel" (what the unit controls) and "Arduino" (the brain of this controller). Since I wanted to share my knowledge with you, now the Arduino source code is available on my website (and also on GitHub).

Up to now, in the past articles, I just shared information about Software development, but today I am pleased to share with you also the Hardware schematic and board layout behind Fuelino Proto1 prototype. The hardware is fully working with the code available on GitHub.

If you would like to manufacture this board by yourself, you just need to buy the components (MOSFET, resistors, LM358 op-amp, ...), send the Eagle project ZIP file to a cheap PCB manufacturer (for example, FirstPCB), wait for the boards to be manufactured and arrive at your home, and then solder the components by yourself. Alternatively, if you need few boards, just contact me at "dadez87(at)gmail.com" and I will be happy to send you a PCB (I have many at home), if you help with shipment cost.

Author: Davide Cavaliere

I am an Italian Electrical Engineer graduated at Politecnico di Milano. My interests are motorcycles and cars, electronics, programming, Internet of Things, and Japanese culture.

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