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by stevecems
Wed Feb 06, 2019 4:50 pm
Forum: Troubleshooting
Topic: Virtual Desktop with RealVNC
Replies: 11
Views: 8241

Re: Virtual Desktop with RealVNC

Thanks Rob, that worked great. Now I have to undo everything I have tried to fix this. I'm upgrading a pitft 3.5" thermometer of my design that uses Jesse. The first thing was to get the display working properly and your help was great.

Steve
by stevecems
Fri Sep 14, 2018 11:27 pm
Forum: Beginners
Topic: Matrix inversion to get correct touch data on 7" touch screen?
Replies: 2
Views: 885

Re: Matrix inversion to get correct touch data on 7" touch screen?

Look up Affine transformations on wiki at https://en.wikipedia.org/wiki/Transformation_matrix for some help. There you will find that a 180 degree rotation would be a matrix transformation like this | cosA sinA 0 | | -sinA cos A 0 | | 0 0 1| put in 180 degrees like this cos(180) sin(180) etc. Rememb...

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