I have a slide pot which I would like to use as the Z or throttle axis. To do this, I haven't done anything clever but have simply taken apart my old Thrustmaster T-Flight Hotas throttle control. The 0v, signal and 3v connections I'm using with the slide pot were previously wired to a rotary pot. With the slide pot, the input is nice, linear and smooth but I'm hitting 100% axis deflection with about 75% slider movement. Wherein does my problem lie? Sorry if there's not information here, ask and I shall provide!
Yes, and the readings are consistent with expectation. It's a 10k pot with readings showing zero ohms at the bottom and around 10k with the slider at max
And you've checked that it's linear all the way up, like at 75% which is where you're having the problem? E.g. it's not an audio/log pot (a lot of sliders are)?
And if this is connected to an Arduino, which one and what it the code you're using to read the slide pot?
Add a resistor, maybe about 2.2K, between 3V and one end of the pot.
This is probably because the original pot used wasn't operated throughout its full range, leaving about 2K of un-used track at the top end. It may be possible to recalibrate it, but for the cost and effort of digging a resistor out of your parts supply, it's probably not worth it.
Yes, it was a 5k pot. Wired a 10k resistor across the terminals and now getting something close to 95% travel for full deflection. Thanks for contributing.