Tagged: PiScreen2 calibration
- March 15, 2021 at 5:38 pm #16643Philippe JeanmaireParticipant
I develop my applications on Raspberry Pi3A+ with PiScreen2. Did an initial calibration and recorded the results in 99-calibration.conf.
All worked well, and after 2 months I am ready to get prototypes in the field…. But I observed over time that the taps on the left side of the screen got less and less precise… to the point where I cannot tap on buttons in top left corner.
I use ‘ts_calibrate’ to read coordinates of set points.
screen 1 results (point: X, Y):
top left: 571, 1313
top right: 3483, 949
bottom right: 3487, 3074
bottom left: 566, 2705
The Y range on the left side is 1313 – 2705 and on the right side 949 – 3074! Running ‘ts_test’ I cannot drag the cursor to the bottom or the top on the left side.
Same test on a new PiScreen2 the results are (screen 2):
top left: 528, 794
top right: 3487, 771
bottom right: 3493, 3314
bottom left: 523, 3331
and cursor can be dragged over the whole screen… which seems ‘normal’
What are your thoughts on these observations?
Note: I have replaced the tall 2×13 female header (situated on the opposite side of the top left corner of the screen) with a low profile header . Could the heat used to solder it have something to do with it?
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