This project was born for repairing broken PC monitors. This allows to avoid using a computer while testing monitor patterns. The Tiny monitor tester uses ATTiny2313 AVR MCU running at 20MHz speed. Such speed allows running synchro H and V signals directly form MCU ports. Also circuit converts R,G,B signals to analog using simple R-2R resistor network.

ATTiny2313 Monitor tester:

• can generate 8 different raster images;

• supports resolutions of 640×480x60Hz, 800×600x60Hz, 1024×768x60Hz;

• is near to credit card size;

• DC adapter or battery powered;

Circuit can be viewed here and single sided PCB

One of test patterns on LCD monitor:

I think it is a good device for testing used monitors when buying them in a public market. You don’t need a PC, just plug Tiny Monitor tester and you will see if there are any damages, are all colors working, dead pixels on LCD’s, are different resolutions OK and so on. This thing should be included to a must-to build list.

You can download ready to burn hex software and AVRASM source file in single archive.

Deogen - Tiny monitor tester

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This entry was posted on Friday, January 12th, 2007 at 12:36 pm and is filed under AVR Microcontrollers. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.