And here's the track:  https://soundcloud.com/hia/cynthcart-synth-demo-track

Thanks alot, making a track with it atm. !

Nice work!

That is gorgeous!

I might as well share it in this topic also, almost finished my C64c mod, still some small problems to fix but 98% working and playable!

Single SID atm. , built in Behringer V-Tone (AMPSIM/DI box) , Internal screen, 555 LFO & Modded MIDI keyboard!

I wanted to do something different in my mod and i think i succeeded

hmm. me too.  perhaps i should have another look.  I've used them quite a bit too, but am generally unhappy with them.  i don't like the shape/depth playing you have to do to get what you want

I used this one from Casperelectronics... It works so well that I've used it in several other projects too now.

Glad you like the LFO idea RJL.  I actually don't play C64 in any bands - but I've modded them for one of the members (spiritbunny.bandcamp.com has some tracks), but so far we haven't really used the LFO part.

What LFO circuit did you use?

I used a 555 LFO (see - http://www.mssiah-forum.com/viewtopic.php?id=1372) but I'm not overly fussed by it as a circuit.  In another project I recently made this LFO () and I like it better, so I'm thinking to get in and add that instead

So I just happened to have most of the parts to make the LFO on hand,  and made a quick trip to Radioshack for some more solder and a voltage regulator. 

The LFO has controls for depth,  shape (triangle to square),  and rate.  An orange led flashes with the rate.  You can switch between modulating the filter cutoff,  or modulating the pulsewidth of the square wave.

I highly recommend the LFO mod,  it really adds a new dimension to Cynthcart!  Thanks WAX

Nice!! That looks sweet!

Awesome,  thanks WAX!  I juuuuuuust finished my C64 tonight and didn't see this until just now... But I might have to open it again at some point and add the LFO...

This one's strictly for Cynthcart use:  audio in,  ground switch,  feedback circuit, 2 "no dead zone" pots,  pot disable switch,  & orange led.

how to hook up an LFO::

1) make your LFO circuit, make sure it works on 5V+/Gnd

2) hook your LFO up to the power coming out the joystick ports

-> pin 7 = 5V+
-> pin 8 = GND

connect the output of your LFO into a voltage regulator (just for safety)

connect the output of your voltage regulator into pin 5 or 9 (depending on what you want the LFO for, filter or pulse width

Awesome! looking good RJL! I was glad to be some help. Good luck with your SID endeavors!

We'll have to wait and see,  I guess...

Head's up - there are many, many, MANY fake SIDs circulating. I find it a bit odd that someone would be willing to offer a replacement so quickly. This might even be part of the reason the previous SID was jacked.