zaxxon
Offline
(219) Indiana, USA

My LTC pitch module isnt working and I'm not sure why. I followed this diagram:
http://www.getlofi.com/wp-content/uploa … ctions.jpg

                                           PICTURES

main board all soldered up (don't pay attention to the wire color i didn't color coordinate it at all) :

another picture of the board soldered up:

potentiometer:

Wire to ground:

Wire to the clock:

Wire to +3 -6V:

Gameboy with pitch module off:

Gameboy with pitch module on:

If anyone knows what to do, please do tell.
Thanks,
zaxxon

Last edited by zaxxon (Nov 8, 2013 11:27 pm)

Apeshit
Offline

Is the stock crystal removed? It doesn't look like you cut the trace.

zaxxon
Offline
(219) Indiana, USA

where do you cut the trace? And i didn't remove the original clock

Apeshit
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You can cut the bottom crystal trace. Check the tutorial, they should say where to cut it if it doesn't tell you to remove  the crystal all together. If you don't cut the trace, you're going to have two crystals connected in parallel.

zaxxon
Offline
(219) Indiana, USA

im going to remove the crystal, ill post the results soon

zaxxon
Offline
(219) Indiana, USA

where are the solder points for the crystal?

12ianma
Offline

Also try putting a resistor on one if the pot pads

zaxxon
Offline
(219) Indiana, USA

what value?

12ianma
Offline

Differs. try 47k

zaxxon
Offline
(219) Indiana, USA

ok well I removed the clock and now the screen looks like this when the ltc pitch module is on and off:
*(Also after I turn of the system the lines stay on the screen and then fade away)

picture of the clock:

picture of first solder point for clock:

picture of second solder point for clock:

picture of potentiometer with resistor on it:

what else can I do?

12ianma
Offline

Does it matter if you adjust the clock while turned on, and have you tried starting the gameboy at different pot positions?

zaxxon
Offline
(219) Indiana, USA

Ive tried starting it at different pot positions and it still hasn't worked and when I try to adjust it when it's on nothing happens. Is there anything else I can do?

12ianma
Offline

Take a zoomed out shot of your entire setup

zaxxon
Offline
(219) Indiana, USA

Ok here it is:

12ianma
Offline

Your +5v and clock out are switched

zaxxon
Offline
(219) Indiana, USA

it still doesnt work. Here is the new wiring setup:

the screen looks like this now when the pitch mod'd on and when it's off: