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A project log for VGA with Arduino

Yet another project trying to generate VGA signals using small avr mcu.

pavelPavel 02/05/2026 at 14:490 Comments

Some 3 years ago I've bought a small 10-inch monitor on AliExpress for using in projects involving generating VGA signals. At the time I checked that it works, but haven't done the experiments I intended it for, until just recently; it was lying around in my electronic junk box.

Now, I've retrieved it, and took a look inside, hoping to find out what chip is driving it, and through searching in its datasheet to find which resolutions and framerates it can recognize from VGA input. The chip was found to be RTD2660H, its datasheet proved quite dense, and I couldn't figure out where in it the info I needed could be found. So, now I am resorting to find out experimentally, what it can take for recognizable input, starting with standard timings that it sure should recognize. I'll write what I found in the future log entry.

Now, here will be just photos of this monitor:

Front

Back

Inside

LCD panel number up close:

Controller board:

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It looks like this one is similar to small monitors for Raspberry Pi sold by Adafruit; at least the controller board has the same chip, and looks very similar. Example with seemingly the same LCD panel.

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