firemarth wrote:

At least being able to control the volume/gain from my keytar would be nice...

Perhaps you could use some sort of volume pedal with your keytar (?)

Therapsid looks amazing,  but like $500 sad

Alternatively,  you could get an old c64 and a Mssiah cart or Cynthcart,  or Retroskoi+...  Only Mssiah uses Midi though,  the other ones you actually use the c64 keyboard to play notes.

...that midivampire looks pretty rad..

Probably not exactly what you're looking for... But I always liked the Pocket Piano from Critter and Guitari...  There is a midi version now:  http://www.critterandguitari.com/products/pocket-piano

I always thought it had a sort of "chippy" sound,  and they are a lot of fun!

And a good app to try is "Squaresynth",  I really like the sounds in it.  You can find it by searching under the iPHONE  apps,  but it works on the iPad as well.

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(48 replies, posted in Commodore Computers)

Oops ,  wrong link... Here:

http://www.bigmech.com/misc/c64mods/noisereduction.html

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(48 replies, posted in Commodore Computers)

I think AlphA used "switching" jacks to do the same thing:

http://www.bigmech.com/misc/c64mods/feedbackloop.html

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(48 replies, posted in Commodore Computers)

I was wondering if the combination of resistance and caps smoothed out that jittery-ness that the pots seem to have?

Btw,  thanks,  EGR!

I have 2 (for bouncing purposes) ... But I'm thinking I might want to get a third one that I can bend... Maybe add pitch mod and feedback or something...

Ps..holy shit,  Seatrash,  you are one of my favorite chip artists! big_smile

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(48 replies, posted in Commodore Computers)

Some clarifications,  if you don't mind...  (Thank you for all your help so far)

Does your C64 have 2 feedback knobs then?  It looks like you just turn them down all the way when you don't want any feedback,  and simply turn them up for feedback,  correct?  No switch needed... Or do you have to use a cable to connect the input to the output?

Do you have a switch/ switches for your pots?  I have heard of people using just one switch.... Does that one switch cut power to all 4 pots then?

With the audio outputs wired as such,  I would no longer need the audio output through the av wire,  right?  You just need 2 mono cables going from the new outputs to your mixer.  Does it output to both a/v and new output at the same time?


I noticed your schematic for the pots has caps,  just wondering the purpose of the caps...

Still deciding if I want to go with your schem,   or the easier one for the pots.... hmm


I'm planning on ordering the rest of my parts soon,  so I'm sort of finalizing what I still need to get smile

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(48 replies, posted in Commodore Computers)

How are audio inputs used on the c64?

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(48 replies, posted in Commodore Computers)

Thanks! This is all very helpful!

I would like to bend/modify one of my Tascam MF-P01 four track cassette recorders so that I can control the playback/recording speed....

Has anyone done this before?

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(48 replies, posted in Commodore Computers)

Thanks!  Good idea with the trimmers...

I also found this browsing the Mssiah forums,  is it pretty much the same?:

I'd also like to add a switch so that I can still use my 1351 mouse with the Sequencer....but the schematic does not show where that would go...

Edit-  it appears the switch would go between pin 7 and the circuit,  cutting off the power supply to it.

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(48 replies, posted in Commodore Computers)

So I am preparing to crack open my C64-C and modify it for use with Prophet64,  Cynthcart,  and Retroskoi+, and I am just waiting on some parts before I begin.  I have modded Gameboys before,  my Atari too... but never a C64(c),  so I am a little bit nervous.  I've done plenty of kit building and circuit bending though,  so I have the skills needed...  it's just that I would like more documentation on how to do the mods.

These are the mods that I wish to add:

+SID2SID - already bought chip (8580),  pcb,  and parts... (I have the manual for this mod,  so I'm pretty good...)
+Audio output(s?)
+Feedback knob - still need to get parts
+4 potentiometers with a switch to avoid keyboard conflicts (and still be able to use port 2 for mouse) - still need to get parts
+noise reduction (?) (maybe)
+New led - orange smile


So far,  all I could find online to help me is this link,  from AlphA:

http://www.bigmech.com/misc/c64mods/

Which is great,  but not quite as detailed as I would like it to be...  And he does a lot of mods that I'm not doing...so he's doing things a little differently.

Does anybody know where to find additional information on these specific mods?  Has anyone out there performed any of these mods and has any tips?

I would try the Prophet64/ MSSIAH forums,  but it seems no one really uses those much anymore so I'm trying here... Also,  because this forum is awesome!

Thanks for your help!

Yeah,   I'm thinking since I want the keys to match the rest I think I might just wipe the whole thing down with some 409 and a cloth or something similar,  and call it a day....  No painting or Retrobrite.

Thanks!

Ok,  figured it out.... All I needed was a male rca to male 1/4" mono cable from Radioshack! Thanks!