[E4ODnut]

Is it possible for a user to modify the Speeduino firmware and the Tuner Studio .ino file? I'd like to add a few output channels and make gauges for them.

[jonbill]

Yes, the speeduino source code is open source and on github: https://github.com/noisymime/speeduino.
The TS experience is configured via speeduino.ini.
Not necessarily trivial though if you're not experienced in working with software.

[E4ODnut]

Thanks for quick response. I'm not fluent in any of the higher programming languages, Arduino in particular, but I'm working on it. I've been studying the Speeduino code, both the latest release and some of the very early versions to try and get familiar with how it works. I'm finding it quite intimidating. All my previous experience has been with Megasquirt 1 and 1 Extra, coding in assembler, which I am reasonably comfortable with and was able to customize quite a bit and modify the Tuner Studio .ino to suit. Modifying TS was almost the hardest part. I did try a few changes to the Speeduino TS .ino, but nothing seemed to take any effect so I was wondering if it was beyond the ability of mere mortals like me.

[PSIG]

Don't forget (if it applies how you're using it), that input and output channels can be created in TS (Aux IO), and both can be logged, sent to gauges, or to an output pin.

Example - input RainDetector and set indicator or gauge on dash to show data, or assigned a physical output pin to control a function. If needed, an input may be created to gather specific data, e.g. Rain Sensor, or use existing data to control an output. Lots of power there without getting into code - if that satisfies your needs.