Members urbanscallywag Posted August 11, 2005 Author Members Share Posted August 11, 2005 It liiiiiiiiiiiiiiiiiiiiiiiiiiiiiives! Link to comment Share on other sites More sharing options...
Members roblogic Posted August 11, 2005 Members Share Posted August 11, 2005 m/:mad:m/ Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 11, 2005 Author Members Share Posted August 11, 2005 I need to straighten out some LEDs and a few aren't working but......the sound! The sound I tell you! The sequencer is pretty cool too.Time for bed, though. I have work in the morning. Hmmmmm, bassline or work? Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 11, 2005 Author Members Share Posted August 11, 2005 Ohhhhhhhh but the SOUND! Its not even tuned yet!The SOUUUUUUUUUUUUND! :) :) :o :o Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 11, 2005 Author Members Share Posted August 11, 2005 Sorry if I seem over the top, I've never used a TB before either.I better go to bed before I start crying out of bliss. x0xb0x+Logic's bass amp, stereo delay, and space designer...is making me...............WAAAAAAAAA CRAZZZZZZY! Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 11, 2005 Author Members Share Posted August 11, 2005 Originally posted by urbanscallywag Sorry if I seem over the top, I've never used a TB before either. I better go to bed before I start crying out of bliss. x0xb0x+Logic's bass amp, stereo delay, and space designer...is making me...............WAAAAAAAAA CRAZZZZZZY! And I seriously can't wait to CV/gate my Odyssey with the x0xb0x slides. Evil. Eeeeeeeeeevilllllllllllll. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 12, 2005 Author Members Share Posted August 12, 2005 I don't think I'm ever going to get around to fixing a few LEDs and putting it in the case at this rate. But I AM having fun. And that's what counts. I think. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 12, 2005 Author Members Share Posted August 12, 2005 I happen to think the LEDs that are out are dead because the IC isn't kicking voltage to them. All 8 out LEDs are on the same IC. Everything looks fine, so I think its time for a new bootloader. Hope that fixes it. Unfortunately the software is very anal.I also have to straighten out a lot of LEDs to put the cover on. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 The panel fits! I had to heat up some LEDs to move them but they all fit into their holes now. I still need to see what's going on with IC8 and the LEDs over there.I don't think I'll be able to update software with my Mac. Re: My LED issues:http://www.ladyada.net/forums/viewtopic.php?t=366 Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 roblogic...let's hear that you started yours. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 I'm not sure how similar the sequencer is to Roland's (rumor has it this one's a bit more user friendly) but I never realized how much of a performance instrument this machine can be. Making patterns on the fly is sweet! Link to comment Share on other sites More sharing options...
Members louvega Posted August 13, 2005 Members Share Posted August 13, 2005 Post some audio demos, plz! Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 Originally posted by louvega Post some audio demos, plz! I will after I sort out my LED issue. It really bugs me (can't see last 3 steps, slide, or accent). Link to comment Share on other sites More sharing options...
Members sizzlemeister Posted August 13, 2005 Members Share Posted August 13, 2005 Originally posted by louvega Post some audio demos, plz! Yeah, WTF, are you just going to leave us here hanging? BTW, that guest's advice seems very sound. I had an issue with my P600 when I was restoring it that was similar. I basically just replaced the CMOS and transistors in the entire circuit because, in contrast, I knew the data lines were good. If the PIC is good (have you confirmed this? We're talking a PICmicro microcontroller that is IC6 and IC8?) then the odds are good it's a bad trace either before or after the PIC. Most likely a data line, but if those LEDs are in serial then after the PIC is possible, too. Anyway, DATA lines, if fuxored, will cause freaky issues like this. I learned this all too well from the P600 project - along with learning I need to get myself a scope if I'm going to get my hands dirty like that again. Link to comment Share on other sites More sharing options...
Members Unfed Posted August 13, 2005 Members Share Posted August 13, 2005 what would cause something like that? bad solder joints or something else? that's one thing that scares me about these diy projects (especially the stories about paia gear, etc needing all sorts of calibrations and testing after assembly). i'm sure i could build it but would have no idea of what to do if something wasn't right. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 IC8 is a latch. The AVR (not PIC I was mistaken) seems to be fine. I can't update software so... I checked joints of the IC, resistors, and LEDs. I'm probing around now... Link to comment Share on other sites More sharing options...
Members sizzlemeister Posted August 13, 2005 Members Share Posted August 13, 2005 Typically if you suspect a data line I think the first thing you do is check solder joints. Then you check the components on either side of the line. Then, if neither of those do it, THEN you look at the trace. You really don't want to mess with traces because usually they're okay (Polysixes notwithstanding). An easy way to test a trace is simply to jump it. Link to comment Share on other sites More sharing options...
Members sizzlemeister Posted August 13, 2005 Members Share Posted August 13, 2005 Originally posted by urbanscallywag IC8 is a latch. The AVR (not PIC I was mistaken) seems to be fine. I can't update software so...I checked joints of the IC, resistors, and LEDs. I'm probing around now... Alright, yeah so I don't know the circuit. So there's a latch, then what? A cmos inverter/driver or something for each LED? Or do they have their own transistors? Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 Originally posted by sizzlemeister Typically if you suspect a data line I think the first thing you do is check solder joints. Then you check the components on either side of the line. Then, if neither of those do it, THEN you look at the trace. You really don't want to mess with traces because usually they're okay (Polysixes notwithstanding). An easy way to test a trace is simply to jump it. And also resort to this: http://www.ladyada.net/make/x0xb0x/files/mainboard_beta.png Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 Originally posted by sizzlemeister Alright, yeah so I don't know the circuit. So there's a latch, then what? A cmos inverter/driver or something for each LED? Or do they have their own transistors? No just a resistor inbetween. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 Nice, I think I just cooked an LED, I gave 5V on the wrong side of the resistor. I was thinking about making every 4th step green anyhoo. Link to comment Share on other sites More sharing options...
Members sizzlemeister Posted August 13, 2005 Members Share Posted August 13, 2005 What's PIN 9 of IC8 doing on the PCB, is it grounded? IC8 is last in the chain, so I'd immediately suspect pin 9 from IC6 to 14 on IC8. Try jumping that to see. Everything else is serial and that's the only "unique" line relative to your issue here. Link to comment Share on other sites More sharing options...
Members sizzlemeister Posted August 13, 2005 Members Share Posted August 13, 2005 SEE! I'm not an EE, but I've rarely seen a synth-oriented circuit where the LEDs aren't driven somehow. These are just feeding straight off the 5v line, yes? Well, with the resistor of course. Link to comment Share on other sites More sharing options...
Members urbanscallywag Posted August 13, 2005 Author Members Share Posted August 13, 2005 Originally posted by sizzlemeister SEE! I'm not an EE, but I've rarely seen a synth-oriented circuit where the LEDs aren't driven somehow. These are just feeding straight off the 5v line, yes? Right. Well, with the 10k resistor in series. I studied them in school like this but I have no idea about the real world.I think you're on to something with the grounding issue. They won't light without an external ground applied to at least 1 of the LEDs. Link to comment Share on other sites More sharing options...
Members sizzlemeister Posted August 13, 2005 Members Share Posted August 13, 2005 In other words, these aren't being strobed, are they? It looks like they're static. Link to comment Share on other sites More sharing options...
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