dtctr - Pocket sized 15Khz hsync generator.

Various hardware & 3rd party solutions.
Post Reply
ube
Posts: 53
Joined: Mon Aug 21, 2017 11:34 am

dtctr - Pocket sized 15Khz hsync generator.

Post by ube » Sat Dec 15, 2018 12:16 pm

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.


front.jpg
front.jpg (79.02 KiB) Viewed 633 times
back.jpg
back.jpg (87.44 KiB) Viewed 633 times
master of the bare pcb

User avatar
DrF
Moderator
Moderator
Posts: 450
Joined: Thu Aug 17, 2017 1:18 pm

Re: dtctr - Pocket sized 15Khz hsync generator.

Post by DrF » Sat Dec 15, 2018 3:09 pm

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:

PhilC
Trusted Guru
Trusted Guru
Posts: 1449
Joined: Fri Mar 23, 2018 8:22 pm

Re: dtctr - Pocket sized 15Khz hsync generator.

Post by PhilC » Sat Dec 15, 2018 5:23 pm

Very interesting. Does it just sync the screen or display anything?

Thanks for sharing the code etc.
If it ain't broke, test it to Destruction.

ube
Posts: 53
Joined: Mon Aug 21, 2017 11:34 am

Re: dtctr - Pocket sized 15Khz hsync generator.

Post by ube » Sat Dec 15, 2018 7:23 pm

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.
Attachments
sample-nec1990fxp.jpg
sample-nec1990fxp.jpg (253.94 KiB) Viewed 593 times
master of the bare pcb

Post Reply