Touchscreen calibration

Is there a way to do a touchscreen calibration? I currently have to touch ~3-4 mm above the actual thing I want to hit.

May be not that much here, but I've always wondered if the touchscreen or my hand-eye-coordination needs calibration.

This thread is asking the same question, you might be able to join forces: http://forum.espruino.com/conversations/375397

But similar to user140377, I think the touchscreen is probably accurate and it's just using big fingers on a tiny screen that makes it tricky. I'm getting better at hitting the button I want with practice.

I have a capacitive touchscreen pen somewhere, probably will check that.

Right now there's no calibration. If it actually turns out to be a problem then it's something that could be added, but it probably makes more sense to do it in the firmware.

Good Idea, got a tiny-tip-touch-pen right here.
The metal ball is the actual touch point. Basically the attached video shows the options screen. Tap on "Apps" will open the "System" Screen. Will happily do more debugging.
It's not the 3-4mm i have above, that is probably the fat-finger-on-tiny-display problem.

1 Attachment

• BangleTouch.mp4

Interesting, thanks! The best way to know for sure would be there's a 'paint' app you can install.

Or you can do something along the lines of:

Bangle.on('touch', (b,e) => {
  g.clear(1).fillCircle(e.x,e.y,4);
});

I guess there is a paint app: https://banglejs.com/apps/?id=tinydraw

Hello,

It is not perfect but seem to work well for me, if you want you can give it a try:
https://yarg-mirror.github.io/BangleApps/?q=calibration

I will try to update it until it is good enough to be submited for the official app loader

That's great - thanks!

Hello,

The application seem to work well, integrate with the App Loader, have a (simple) setting page that allow to active or deactivate it's effect. But I am not sure how to do the PR to submit it, since I added it as a submodule on my side, if I subit it in this state it only suggest to add it in the same way.

Should I delete everything and just add the files manually before submiting it or is that format ok too?

Ahh, yes - please can you just add the files straight to the repo?

It was discussed about submodules a while back but it just makes things too tricky. 500 submodules would be crazy slow to clone, and imagine we change something in the firmware and have to update a bunch of apps to make it work - we'd have to manually send out hundreds of PRs (which would be pretty much impossible).

Sure no problems :)

Fork redone and PR sent o7

Works like a charm. Calibration App showed sth like -10 for vertical after 20 crosses.