t_xen Posted June 5, 2008 Report Share Posted June 5, 2008 inspired by the Black-Green Beast. ;)http://www.midibox.org/forum/index.php/topic,8044.0.htmlIt has power dropouts and I cannot send midi to the slaved Cores. Quote Link to comment Share on other sites More sharing options...
t_xen Posted June 5, 2008 Author Report Share Posted June 5, 2008 ok, looks like the CAN Bus errors sorteed themseves out, still power dropouts though. :P Quote Link to comment Share on other sites More sharing options...
Sasha Posted June 5, 2008 Report Share Posted June 5, 2008 Wow, it looks really nice with that knobs on that black/red/white panel. I would never tried that knobs myself. Good work t_xen! :) Quote Link to comment Share on other sites More sharing options...
unrise_lyrical Posted June 5, 2008 Report Share Posted June 5, 2008 VERY impressive :) how did you colour the enclosure? Spraypaint? Quote Link to comment Share on other sites More sharing options...
t_xen Posted June 5, 2008 Author Report Share Posted June 5, 2008 yup. just a straight up can of flat black spray paint.And the downside to most ppl using those knobs are, you gotta have small fingers.This is a version 2. I did not get the baseboard from wilba. I used all individual modules and stuffed the case (Thank you SmashTV and get well soon, damnit!). there's not any room left inside, but only for a memory upgrade (2 bank sticks installed). The panel is a v1 panel (no volume LEDs on the mod matrix) , but it's stuffed with 8 6582 sids (thank you Wilba!).Of course, uber props to TK. ;DWhat needs work....Anybody know anything about power dropouts err, brownouts? Seems to be my only hurdle left.I've got a 12v @ 1A wallwart feeding a single 5v and 8 9v regulators. I can play it for a couple of minutes, then it looses power. I have to let it sit for 10 seconds before it will boot back up. ??? Quote Link to comment Share on other sites More sharing options...
stryd_one Posted June 5, 2008 Report Share Posted June 5, 2008 Are you getting core reset midi messages? How's it go with the LCD backlight disconnected? Are they ultrabright leds'?They are a bit large for my liking, but the silver colour goes nicely with the red and black. Nice looking box! Quote Link to comment Share on other sites More sharing options...
unrise_lyrical Posted June 5, 2008 Report Share Posted June 5, 2008 wow, just noticed you seem to have a blue LCD screen with a RED backlight...how did you manage that? I didn't know such a thing was available? Quote Link to comment Share on other sites More sharing options...
t_xen Posted June 5, 2008 Author Report Share Posted June 5, 2008 The LCD was ordered from Crystalfontz.comhttp://www.crystalfontz.com/products/product.phtml?partname=CFAH2002ARMIJPno core reset messages. The LEDs aren't ultra brights, they're high efficiency reds. The 5v regulator will get hot before power cuts out. Do regulators just "quit" when too hot and have to cool off before functioning again? I wonder how many amps I'm pulling. Is it possible that the current draw might be too high for a single 5v@1A regulator? Quote Link to comment Share on other sites More sharing options...
stryd_one Posted June 5, 2008 Report Share Posted June 5, 2008 no core reset messages.They're just turning off then, not resetting...The 5v regulator will get hot before power cuts out. Do regulators just "quit" when too hot and have to cool off before functioning again?Yep. Do you have a heatsink on there?I wonder how many amps I'm pulling. Got a meter?Is it possible that the current draw might be too high for a single 5v@1A regulator?Judging by the LEDs alone and assuming you have the correct resistor values on them, I'd say they're unlikely to cause it, and the next highest draw is the LCD. I'll ask again... how do you go with the LCD backlight disconnected?Anything else connected like a fan or anything that might use heaps of juice? Quote Link to comment Share on other sites More sharing options...
t_xen Posted June 5, 2008 Author Report Share Posted June 5, 2008 got a cheap ass meter that doesn't test current draw.nothing else like a fan or anything is hooked up to it.I'll get to pulling the LCD in a bit and testing. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted June 5, 2008 Report Share Posted June 5, 2008 good luck! Quote Link to comment Share on other sites More sharing options...
t_xen Posted June 5, 2008 Author Report Share Posted June 5, 2008 ok, I removed the LCD. powered it on and after a short time the power still goes out. so what should I do now? I'm gonna try disconnecting the DIN and DOUT boards to see if that has any effect. any other suggestions? Quote Link to comment Share on other sites More sharing options...
cosmosuave Posted June 5, 2008 Report Share Posted June 5, 2008 ok, I removed the LCD. powered it on and after a short time the power still goes out. so what should I do now? I'm gonna try disconnecting the DIN and DOUT boards to see if that has any effect. any other suggestions?Try another wall wart maybe? Disconnecting the modules is a good idea... Quote Link to comment Share on other sites More sharing options...
t_xen Posted June 6, 2008 Author Report Share Posted June 6, 2008 heh. think I am pulling too much current. I have disconnected the shift registers on 3 sid modules and the thing is being stable. I think need to figure out how to get more amps for the draw. ;) Quote Link to comment Share on other sites More sharing options...
Therezin Posted June 13, 2008 Report Share Posted June 13, 2008 I think replacing your 7805 with a 78S05 should give you 2A to play with instead of one, but I'll happily yield to those with greater electrotonical knowledge than my own... Quote Link to comment Share on other sites More sharing options...
nILS Posted June 17, 2008 Report Share Posted June 17, 2008 Keeping the same 1A wallwart and switching to a 78S05 will not do any good ;) If the wallwart delivers a max. of 1A it's not gonna get any more by switching to a different voltage regulator. Quote Link to comment Share on other sites More sharing options...
Therezin Posted June 18, 2008 Report Share Posted June 18, 2008 Keeping the same 1A wallwart and switching to a 78S05 will not do any good ;) If the wallwart delivers a max. of 1A it's not gonna get any more by switching to a different voltage regulator.D'oh! completely missed that bit. :-[ 2A wallwart, then a 78S05 to make use of it :P Quote Link to comment Share on other sites More sharing options...
Pseudo Posted June 30, 2008 Report Share Posted June 30, 2008 Do you have a heatsink on the 7805. If you're feeding it with 12v it's got to dissipate the 7v and considering the amount of LEDS and backlit LCD I would expect it to get pretty hot. As these regulators do have thermal shut down features I wouldn't expect them to last too long without a heatsink before shuting down. Quote Link to comment Share on other sites More sharing options...
t_xen Posted July 1, 2008 Author Report Share Posted July 1, 2008 that's what I figured was happening. My walwart seems to be delivering just enough amps though. What I'm going to try is putting in another 5v regulator, move all the shift registers for the SID Modules off the current regulator and link them to the added regulator. Should pull some heat off the current 5v regulator that's in it by reducing the load off that part. I'll update when I get around to doing this. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted July 1, 2008 Report Share Posted July 1, 2008 Be careful with the ground levels when you do that....... Make sure you keep just one ground plane. Quote Link to comment Share on other sites More sharing options...
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