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dtctr - Pocket sized 15Khz hsync generator.

Posted: Sat Dec 15, 2018 12:16 pm
by ube
The dtctr is a pocket device for use for testing if a monitor is 15KHz capable, a must if to be used with Atari ST and Amiga amongst other computers. It's powered by a 3V CR2032 battery and by the press of the power button it generates a test image within 6 seconds as of now since the firmware is really slow.

The firmware is based (slightly tweaked) on Nick Gammons work.
The hardware is basically an Arduino pro mini running at 16MHz, and can be programmed using the ISP header on the board.


Design files and source code.


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Re: dtctr - Pocket sized 15Khz hsync generator.

Posted: Sat Dec 15, 2018 3:09 pm
by DrF
What a clever and time saving device :)
The amount of times i've read a spec sheet for something and its not had that feature or been completely wrong :lol:

Re: dtctr - Pocket sized 15Khz hsync generator.

Posted: Sat Dec 15, 2018 5:23 pm
by PhilC
Very interesting. Does it just sync the screen or display anything?

Thanks for sharing the code etc.

Re: dtctr - Pocket sized 15Khz hsync generator.

Posted: Sat Dec 15, 2018 7:23 pm
by ube
Here's an image of my 1990FXp with it's info screen active while generating a signal. It's an earlier design, but everything is the same.