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marvin_gain

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About marvin_gain

  • Birthday 01/01/1

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  1. i don't know why the pics are mirrored. thats the way my laptop took em, sorry err. I said the voltage was 14VDC (plus the 5 volts from the core). The cables aren't soldered to the headers. i used pins like a good boy. Any advice?
  2. okay okay i have some time off school to try and finish my sad sidbox. It's been crying to me from the corner of my room, hidden away in a ups box like a run over rabbit waiting to die. NO i say...i shall resurrect it. Right now I'm forgetting about the control surface and just trying to get the core/sid working at all... The power for the core is working fine, but the sid power is having some issues. I've been using the modified c64 supply, but i think i wired something wrong because its not feeding the right voltage to the sid. I tried running 14 volts DC from my bench supply into the sid and I hear noise and clicks when I play, but no sound. When I tested the pins, it read that each chip was only getting 1 volt! What does that mean? Did i stuff parts I didn't have to when I built it or did i just muck something up? and to think, I wanted to go to school for engineering. Sorry to disappoint you dear ol' dad. here's some terrible pics i took by holding up my macbook: edit: further testing shows that both my C64 power supplies are not putting out the right voltages...but that doesn't explain my other issues.
  3. Just spent some time searching the forum, but have a few questions I'd still like to ask. my plan is to eventually have a stereo 6581 with basic control surface+filters. First step for me has been to assemble the basic core/sid/led/simple surface combo. I got some 6581 chips, some smashtv kits and some mouser LCD, button and encoder stuff. my first problem: Using the C64 power supply I was unable to get the core to work. The 5v from the C64 wasn't enough juice to get the core/lcd to work. I plugged in a 9v wall wort and the core worked fine. Is this because I used to wrong regulator or something? even with this issue i pushed on with two power supplies plugged in my surge protector. I Uploaded the code and connected my sid (after testing voltages). Thats when I came up against the next problem: I connected the sid to the core as shown and when I power it on I can hear the blaring noise floor of the chip but can't get it to make a sound with my MIDI keyboard. The LCD displays the program fine, but no sound. I'm waiting to get my PC back from my girlfriend so I can upload the test tone program and see if that works (I'm writing on a mac that I couldn't get java/midi friendly). Ok, so if that's not enough, I'm afraid to say that my control surface also didn't work. I got a DIN board from smash and connected my buttons and encoder, but no go. Am I missing something? Is there a software script I need to upload or edit to get these to work? The encoder I got has five pins http://www.mouser.com/catalog/specsheets/TW-700201.pdf. I should have read a little more before I ordered it. I know I got the ground right, but does it matter what other pins I use? I just picked two and went with it.... please don't fry me, I know I asked a ton of questions and I'm sure my search abilities missed some answers on the forum and the wiki, but I did my best. Any troubleshooting tactics would be great. I'll try and borrow a camera for some pics. henry
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