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bugfight

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Everything posted by bugfight

  1. coolness, i'll take 2 if it checks out...
  2. ewwwwwwwwwww! my eyes! unsee, unsee!
  3. again?? a scope is easier, but not an absolute requirement for this you don't need that, the matrix buttons do this for you, just press a row button and a column button simultaneously for each led you want lit. you can light all of them, if you want, in about 10 seconds...
  4. ok it's not the switch then. check for short to gnd on the line. check for pulses at U21 pin 5. if you read pulses there, move step by step down the line, testing for the signal at each point, all the way to the row of leds. if you read 0v there, the only possibilities are a bad chip (several bad chips, since you swapped it, thus very unlikely) or a short to gnd.
  5. akk, sorry, this is indeed clearly the source side. my head still has the seq array in it which sinks a row at a time. should have looked at the pcb, my bad. the troubleshooting is the same, though, it just doesn't go through the transistors. if continuity along the line checks out, check for a short to gnd on that line. make sure the resistor isn't the wrong value (this seems unlikely) or that row of diodes isn't backwards (even more unlikely). one more thing, how are you testing the functionality? if you are using the matrix buttons, it could be that button as well. easy to verify this by switching patches... hope this helps. feel free to tell me to stop "helping"
  6. did you trim the leads on the components under the lcd? i had an issue there... also read the voltage at the pin of the sr that feeds the base of the transistor that sinks that row. if it is working, it will be pulsing, which will read less than 5v dc, but if it reads 0v then you'll know the problem is upstream. if that's working, test the output of the transistor the same way. just use a systematic approach and don't try to shortcut the process, trace the signal from one end to the other. a scope would help of course, but it can be done without it.
  7. I'll just make a few quick points for now. I think it would be better to require full disclosure up front of certain things, rather than try to define the form of every order. for example: - payment methods accepted/required/preferred - any testing that will be done prior to shipping - time frame for each stage (ok smash, this can be 6months or whatever, but some idea should be given) Additionally communication must be kept current, any delays promptly explained, etc. Using some post you consider rude to excuse out of this is unacceptable Maximum liability of the organizer should be a refund of payment on return of items. If the organizer is held liable for shipping, then insurance would have to be required as well as full customs reporting and like such as... I think the phone number requirement is too much. Maybe each organizer could register contact info with a moderator??
  8. the description implies two 9vac sections: RECOTON 9VAC/9VA & 9VAC/9VA & 5VDC/8.5W SET TOP POWER SUPPLY better not to waste an unused 9vac section. or do you want to destroy the earth? *whack* (it's a joke, stryd, see the *whack*?) i'm confused, why do you need a tally if you have no interest in a group buy?
  9. this looks interesting, but it looks like it has 2 9vac sections instead of 1... also, would it make sense to find a lower power psu? hmmm time to measure current draw on mb-6582...
  10. cut those pins off first or risk lifting pads... ok, you already knew that but maybe n00b didn't. congrats on your new guru status, now fix all my stuff for me *whack*
  11. pic isn't dead, it's normal to get 1 upload request at startup when mios is installed
  12. yes, yes! hmmm can you make linear mapping an option too? perhaps that's what you meant already... if you were to provide these several options with compile time switches (i think that's what you are suggesting), that would be just peachy! thanks for looking at this possibility. it's easy to imagine a supersid with sids, swinsid, and analog modules, wheeee...
  13. just to clarify: my point was that if gavgomad has v/oct modules, no lookup table should be required. i am interested in the modular synth control stuff in general and especially with reuse of sid software. some real 303 modules controlled by sid software would be a great first step...
  14. if they are v/oct inputs, then this is already done by the circuit.
  15. so what's wrong with "bumping"? everyone is addicted to "new"?? i much prefer this "bumping" to the useless new threads that cover the same or similar topics...
  16. cool, it's probably for the best anywayz. i find it so hard to resist these group buys... i will get in on the next round.
  17. search only searches below where you are in the heirarchy. this allows you to narrow your search results. takes a few minutes to get the hang of it, but it works very well. go to the home page to search all.
  18. bugfight

    Old c64 psu

    i guess i'm going to have to open up my malfunctioning spare and see how nigh invulnerable it is. has anybody here dug into the epoxy yet?
  19. if space is tight, use smd serial registers. the SOIC chips are not so hard to solder... plus if you keep the registers close to the controls they support, you need less space for running traces across the pcb.
  20. i bent the spring down out of the way, so theoretically it is reversible, though i plan to never try it. i haven't exhaustively compared them for electrical stability, but mechanically they are far better
  21. I removed the detents on some of these and they do seem way more solid after the operation than the alpha or alps equivalents
  22. bugfight

    Old c64 psu

    weird, looks like you got the alien psu, complete with digestive enzymes...
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