This week I purchased a TFT LCD shield (from a listed French distributor), received it and got everything working. At least seemingly - now I'm having problems...
Basically the touch screen feature has stopped working. The display itself still works fine. I've been using the TFT paint program to try it out. What's weird is that it was working yesterday - although it was a little flaky at first - and today nothing.
So here's a summary of what I'm using:
- Arduino MEGA 2560
2.8" TFT LCD shield v1.1
Arduino software v1.0.2
Latest TFT LCD software
Any thoughts or help from the community as to where I should start debugging the board?
Two maybe related / maybe not related points would be:
- 1. I mention flaky initial operation above - at first the touch feature also didn't work, but after a couple of re-plugging the board in and getting all the software work the issue went away. I can't say whether there really was an issue here or not.
2. When the touch functionality of the screen was working, it was badly "calibrated". By this I mean using the paint program to draw a line in the centre of the screen did as expected, but close to the edge of the screen, the line was significantly offset. Has anyone else seen this? This only was true for the X-axis, the Y-axis worked fine.