Hacking retro CASIO synth

I bought this nice synth to a friend in need for a few bucks. It is really cool, it is kind of retro but I decided to add more retro and a pot to change tune easily. I attached some pictures.
So I'll so you how to hack it easily. This will probably work with all synths and keyboards with a tune preset.

Step 1: Materials

The things you will need:

• X1 50K potentiometer (check your preset pot to confirm value)
• X1 Knob (optional)

Household items:

• Drill
• Wire
• Retro style wood
• Screwdriver
• Dremel 

Comments

[Homepwner]

Nice one, although I personally would have found it difficult to only mod the pitch control. did you try poking around in there?

[TobaTobias]

Yep, actually there are loads of resistor where you can put a pot so I'll put pictures when I finish with that.

[Homepwner]

NICE! I have built more than a few "circuit bent " devices including an old Roland TR-505. Seeing the pictures of your casio keyboard open MADE me have to ask. :)

[mpilchfamily]

(removed by author or community request)

[TobaTobias]

Thanks mate!

[resinipsa]

yes, it` a retro style, very beatiful... but here there are something that you can do yourself...

[mpilchfamily]

Great little project.

I wish my old Casio CA-110 was that easy to mod.