Electronics > Beginners
Recreating a CRT style Radar display with a LED matrix
rthorntn:
I'm thinking the "round LCD" PA0PBZ shared, connected to an RPI and stuffed in a case could be cool. Thanks everyone.
james_s:
It's definitely going to be hard to beat the resolution of one of those.
For lower resolution displays my suggestion would be to draw the grid of pixels out on paper and then draw each position of the sweep such that it looks as pleasing as possible. All you need is 1/8th of the radius and you can get the full rotation by swapping and mirroring the X and Y axis. No need to do any fancy math to calculate it.
rthorntn:
Anybody got any ideas on how to get these cool 3.4" round screens, I can only see them on alibaba and I think alibaba is more about selling to companies in quantity that handle the logistics?
Beamin:
--- Quote from: PA0PBZ on August 01, 2018, 10:20:50 am ---Can't help to think that a cheap LCD display would be so much easier...
--- End quote ---
Those panels on mikeselectricstuff with a diffuser. Cost about 50$ or less.
james_s:
I don't know about 3.4", but round TFT displays are readily available from Chinese ebay sellers.
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