nILS

Troubleshooting the whole thing is a lot harder than testing the individual parts. Start by disconnection everything. First, check the PSU - measure all voltages, add some dummy loads (~7 LEDs in series for a 12V rail for instance), if everything checks out, move on to the core. Connect it to the PSU, check voltages, upload something, all good? Move on to the DIN chain. Hook up the DIN chain to the core use the ain64_din128_dout128_v2c app to see if all inputs are working. If that checks out move on to the DOUT chain with the same app. If that works, disconnect DIN/DOUT again and hook up the OPL3 module and see if you can control it and everything sounds fine. If that works, hook up the CS again.

Schem: http://ucapps.de/mbhp/mbhp_dinx4.pdf I am not handing out .brd files until _after_ I've checked them :ahappy:

A quick eagle session says that with my very limited eagle and SMD skills a DINx4 would be doable in 2.7 x 1.2 inches. Smaller is possible but hard, mainly due to the fairly high amount of sockets. Maybe I should make set of all-smd standard modules and run a tiny tester-bulk order :thumbsup: Oh and sorry for dragging this thread off-topic ;)

Why get the Primer when you can have the core32? It comes with all the IO ports you need and has somenifty source code and apps available :)

[x] Patience is a virtue. [x] Posting in english will yield more results. [x] RTFM.

What do you mean by "clicky oscillators"?

GLWT.

Slick. Stylish. Clean. Me likey a lot! And I took the liberty of making it MIDIbox of the Week :)

If you decide to go SMD go SMD all the way, otherwise you'll find yourself in via-hell and do not really save a lot of space. Use decent sized passive components (sth like 1206 or 0805 for the resistors).

http://www.midibox.org/dokuwiki/doku.php?id=windows_toolchain_quickstart

Semi-random errors on a basically working system hint towards a failed/incomplete upload. Try reuploading the app. Also - did you use the correct pic (18F452)?

There is only one ground and hence all grounds must be connected. Yes. You can mount all parts (maybe except for the midi sockets you don't need) and connect those out -> in to the next core module. Correct. You can also use a 2x5 and simply chain all DIN and DOUT modules taht are hooked up to a single core in one line.

Well, yes and no :) It's going to be a HUI but if the thread moves more towards the programming aspect, I'll move it ;)

He has considered the two pin thing. 22 * 2 + 84 = 128. Doable on one core. Not necessarily with the mb64e app though (dunno, never worked with it)

* nILS puts on tinfoil hat :sorcerer:

Short answer: No. Long answer: No. USB ports can only supply a very small amount of current. If you overdo it you'll probably kill your motherboard. Guesstimating 50mA for the core, 20mA per DIN/DOUT and 10mA per LED you're looking at ~800mA, which is way over usb spec.

Hehe, no worries I just like saying that :D

RTFM

Me likey :) Mebbe with white button caps it would be even moar purrtier? :frantics: Oh and with a black on White display :D

I guess you have no shorts or broken traces around the crystal? Are the caps properly grounded? Is the other leg of the caps accidentally grounded? If all that is the case, I guess it's really the gm5...

Since you have a scope - did you try to check the signals on your working gm5s' crystals?

If the main LED is constantly lit the gm5 isn't properly initialized. So I guess, that leaves the crystal or a dead gm5.

Is it a gm5 module or gm5x5x5 module? Have you stuffed the appropriate jumpers? (Easy and safe thing to do is to set all jumpers)? What does the main LED do when you plug it in? Frying the small Atmels seems impossible, and believe me, flexinoodle seriously tried :D

If the LCD is blank, you're already having troubles way before the upload. So I guess it's time to start over. We're going to do this step-by-step and I'm sure we'll get it fixed :) The easiest way to do this would be for you to drop by the chat. Real-time chat is a lot faster at times ;) 1) Did you check all the voltages? If not, remove all ICs and do that. Report back.