uclaros Posted January 13, 2005 Report Share Posted January 13, 2005 Hi all!I've built a modified core to use only with din and dout for switching on an amplifier.I didn't use connectors for the LCD so I didn't use the trimpots, transistor and resistors for the LCD.I will not use pots, so I grounded all 8 of the pot pins.connections are:pin 1 via R1 to +5pin 2-5 gndpin 6 via R2 to +5v.pin 7-10 gndpin 11 +5pin 12 gndpin 13-14 oscilation circuitpin 15-17 Not Connectedpin 18 via 10K resistor to +5pin 19 to DOUTpin 20 to DIN and via 10K to +5--pin 21-22 to din - doutpin 23-24 Not Connectedpin 25 via 220R to midi outpin 26 via 1k2 to +5 and to pin 6 of the optocouplerpin 27-30 Not Connectedpin 31 Gndpin 32 +5pin 33-40 Not ConnectedThese are the PIC's connections, I'll post a pic as soon as the midibox.org is up again.My problem is that on a pic with midibox64v2 app loaded, when I press a button on the DIN, I receive infinite random midi data. I also recieve some midi (allways the same) when I unplug the power from the core.It also seems that the core cannot recieve midi data correctly.Any Ideas?I will post pics.Thanks,Uclaros Quote Link to comment Share on other sites More sharing options...
illogik Posted January 13, 2005 Report Share Posted January 13, 2005 Hi,this is where lcd's come in handy ;) But this is not possible, so here goes;First i should check if all resistors on the din board are properly soldered/connected; on the din-page it says;Your MIDIbox will send a lot of random MIDI traffic without these pull-ups, so don't miss them!Check if you got all the required pull-up/down resistors on your modified core module.Then if there still is a problem; follow the steps in the "midi-debugging thread".Hope i haven't been bothering you with things you knew allready, anyways good luck!marcel Quote Link to comment Share on other sites More sharing options...
uclaros Posted January 13, 2005 Author Report Share Posted January 13, 2005 Thanks for the reply, thus it will not do...The DIN works fine on my other midibox...The resistors on the core are the ones I mentioned.The core's midi out is probably working because the bootsrtap loader sends it's sysex!But then it seems I cannot upload mios!I allready regret that I didn't use the LCD pins and circuitry!...and finally , like 98% of all cases it will be some bad soldering! Quote Link to comment Share on other sites More sharing options...
uclaros Posted January 13, 2005 Author Report Share Posted January 13, 2005 Problem solved! The PIC died somehow! I changed to a new pic , burnt the bootstrap, loaded mios, loaded app and all OK!Now I erased the old PIC but cannot program it again!!!The JDM works fine, I burnt 3 bootstrap loaders today! Quote Link to comment Share on other sites More sharing options...
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