DIY a SID Synth

We are analog guys but we grow up with Commodore64 tunes . Our goal here is to document the assembling of a SID Synth, a synth based on the SID chip. The SID was the chip used inside the Commodore64 console. Have a look! Comments are welcome!

21 September 2009

SID_News_4

Well, all is done. Finally all is assembled into the enclosure as you can see from the photos.
I had big troubles on programming the PIC18F452 because my programmer/burner (a Willem PCB5.0) didn't recognize the PIC, so i built the PicBurner module but i burned out an Schmitt trigger... Luckly i tried again with the Willem, this time i used the ICSP connection with the application WinPic, it seems something go fine, so i burned the PIC with the Bootloader.
After some voltage test i stuffed the PIC into the Core Module and i tried the MIOS upload but it didn't work so now i've to understand where is the problem. Surelly is the bad PIC programming. I will update this blog with news.

All in one.

Core and SID Modules.

LCD and push buttons' cables - Power switch.

PSU adaptor - Red cable 14 volts - Yellow 5 volts.

Stereo plug cabled.

MIDI out - MIDI in.

It's alive.

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08 September 2009

SID_News_3

Here we are, yesterday i've finally decided the Tony's SidSynth style.
Also, i've finished the PSU adapter. It allows to use the original Commodore 64's power supply instead of building a new one.
It feeds 5 and 9 volts so with the PSU adapter we got 5 and 14 volts. 5v for the Core, 14v for the SID Core. There is a switch on the board, it turn on/off the SID Core. The power switch for the Core will be on the bottom side of the enclosure, not on the adapter board, you will see.
I will use old keys/buttons from an old keyboard layout (very old, surelly for a 286 pc). As you can see from the photos i've inserted 2 red square leds, there will be anothe one and i'm thinking about a blue one for the power. The red leds are only for live performance in a dark ambient as i know where Tony usually plays :-)

This is the final design.


Up side and down side of the PSU adapter


Just to show the "All cabled" thing between modules