clem! Posted November 2, 2015 Report Posted November 2, 2015 (edited) Hi all,after long absence I have decided to build a midibox kb. So I have soldered LPC17, loaded up midibox kb and thought, DIO_matrix "1 to 1" connected to keybed (as shown here: http://www.ucapps.de/midibox_kb/midibox_kb_fatar_df_61_interconnections.pdf) and core would produce a working system. But it seems I have failed, I don't get midi note_on-messages from the core. Do I have to adapt the setup somehow or is the 1 to 1 connection the false option?Best clem! Edited November 3, 2015 by clem! Quote
FantomXR Posted November 3, 2015 Report Posted November 3, 2015 You are right. It should work this way. I have several keybeds connected like this. You used a twisted cable for connection DIO to J8/9? Quote
clem! Posted November 4, 2015 Author Report Posted November 4, 2015 (edited) Thank you FantomXR,if twisted means pin1 from Core32, J8/9 goes to pin 1 of DIO_Matrix, that is what I have done. So this can not be the reason. I will proove the soldering and the connections of the setting with the multimeter one more time, especially the micromatch-connector maybe a cause of defect.BTW: I've connected a DEM 20485 SYH-LY, KS0066 based 4*20 LCD for EUR 16,50 from Watterott (good price I think), here is the plan for the wiring that differs in the cathode/anode from other displays:mbhp_lcd_mios32_dem20485.pdf Edited November 4, 2015 by clem! edited kommata ;) Quote
FantomXR Posted November 4, 2015 Report Posted November 4, 2015 Look at this:it's turned by 180° Quote
clem! Posted November 4, 2015 Author Report Posted November 4, 2015 Error found and solved - no it was not the cable. It was a bad soldering point at J8/9 and a pin from IC1 was not plugged. Everything is fine now.Next I need to adapt the dynamic curve and I have to shorten the keybed by 1 to 1,5 octaves, there are some defective keys and 5 octaves are to much for the planned keyaxe. Quote
clem! Posted December 17, 2015 Author Report Posted December 17, 2015 (edited) After solving some problems with bad soldering points and little softwareproblems, the little toy has got a form and is working. Thanks to TK. and all the others that helped. And now I've to fix the wheels, connectors for pedals, the pots and the CV-Out. Looks a little bit like a modular. Here ares some pics: Edited December 17, 2015 by clem! Quote
fundamental Posted December 20, 2015 Report Posted December 20, 2015 Cool keyboard! What are you using for those metal crossbars that the keybed is resting on? Quote
clem! Posted December 20, 2015 Author Report Posted December 20, 2015 @:fundamental: Those are aluminium-L-profiles out of a building center. Quote
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