freddy

Some time ago I bought ~120 switch caps from DigiKey (part# 401-1152-ND) for my two SEQs and never used them (I sticked with round ones). You want some?

When I was trying to get the same (i.e. CS MB6582 board only, because I had to re-solder the encoders three times and PCB traces started lifting up) he answered with an 'yes', so I'm pretty sure it's still the case, just be patient for him to answer. Hope this helps, freddy

Count me in for two, please. Not sure if the new dimensions were measured already, though.

I guess this is for my own interest only (at least for now), I've emailed you with email address. Thanks for the other details!

<blockquote class='ipsBlockquote'data-author="pilo" data-cid="160759" data-time="1384424215"><p> I use this DAC for an ADAT converter:</blockquote> ADAT? This is about DACs but did you also build the full 8ch I/O from/to ADAT to/from analogue? If so, any chance for the schems? That'd be exactly what I'm looking for in a DIY format, not expensive commercial products... Cheers, freddy

Well, correct me if I'm wong but you can always treat DIO_MATRIX as 2xDIN and 2xDOUT, matrix is just for convenience use in a single connector and on a single module. The schems seem to confirm this. Just make sure you do the DIN/DOUT SR counting properly ;)

If it just happens you have a DC-DC (5V-5V) converter lying around that might be even better, but, then it's in fact the eBay thingie... And if you don't (and your local electronic parts dealer doesn't have them on-stock) you definitely should try the LC filter first.

Two rows of squares sound like a contrast issue to me. Try messing with the trimmer to see if it helps.

Sounds interesting, any suggestion from your own experience? But still, the flux being part of solder is rarely (if ever) water-based.

Thanks for the shower, too ;) but I was thinking basically about a different MB device (assuming the digital controls are more or less already MIDI controllable already). My prototype for MBMixer was a simple Core 8 accepting the CCs plus a bunch of DOUTs to controll the AD digipots. The digipots will simply replace current pots and faders. It kinda makes sense to keep it separate because one part is the SEQ to control the MB808 and another thing (i. e. device) is to control the voice tunes. You can always link it internally using merger and splitter to "look" like a single device. Of course, I didn't consider merging the existing FW to handle both parts which would imply requirement of an additional SCS for the tunes, if needed/wanted.

For another design (MBMixer, though never finished, alas) i went the way of using digital pots fron Analog Devices. They're i2c/spi controlled, might be simpler HW- and implementation wise. Just my two cents...

No problem, orbitalgun, when things change you know where to find me :rolleyes:

I only could supply you with (fully populated) GM5x5x5 board, not just the chip itself. PM me if interested.

Grr, I watched it during the day and now all gone :/ Good catch, indeed!

Usually, for me sucking the tin (with tin sucker) is more than sufficient. And, not sure about mb6582 but the resistor metwork legs are far smaller than the drill holes so it definitely doesn't have to be super clean. Definitely no-no for drilling!

Mine is fully populated (save the buttons) but unfortunately I didn't get to testing yet :-( Anyway, good job, ilmenator!

Tim, I'm afraid I'm holding this very questionable record - joined in 2003 and first post in 2011, I've been a silent lurker otherwise, at least as per the forum history... :rolleyes:

Peter, I'm about to try these, they look like common cathode if I read the internal diagram correctly, though. Next week I'll fetch them and solder them when the board arrives. A supplier in my home country has them for 6,73 € (incl VAT) but I won't be at home before the following Thursday (ilmenator will be posting the boards later, anyway). I'll keep you updated, if interested.

Please, count me in for one TPD PCB as well, ilmenator, my 16x4 is missing company :-)

No kidding, Marxon, even in Conrad the price is 12E for 400ml, 8.68E for 200ml, I just bought one this week :-) And, in case you can't find it, in Germany it's called 'LR' (Leiterplattenreiniger) instead of 'PCC' (Printed Circuit board Cleaner). +1 to recommend!

nILS, guys, none of it, actually, I found a big(ger than it should be) blob of solder on on IC1 pin 3 (causing a short to Vcc) :no: Removing it helped, obviously :rolleyes: Thanks anyway, cheers!

Guys, I've build (excellently documented, BTW!) and tested both sammichFM PCBs and had no issue at all - no shorts, all voltages correct, powers up and works, i.e. I was able to upload firmware (the correct one before you ask), upload presets, play tunes from remote keyboard. The only issue is the CS - no LEDs lit, no enc/button works (apart from S3 which sends patch SysEx). I've measured HC165 and HC595 voltages, tested the paths from J8/J9 to the chips, paths from chips to LEDs, all seems okay but the HC595 outputs are all set to 0V. I'll measure the DIN matrix connections tomorrow if needed but this seems to be a general CS issue to me... What else to look at? Anything to measure? I'm quite clueless at this moment :no: Looking forward! Cheers, freddy

Thanks, Frank :rolleyes: Honestly, this really came like a thunder out of a clear sky - exactly what I was looking for, with excellent terms and really quick, I couldn't wish for more. I'm really looking forward to the time spent constructing this beauty and playing with it :rolleyes: Thanks again!

Hmm, sounds reasonable, I missed the DOUT point. Okay, I'll pass the (appropriate) MIDI data to the synths via J4B via SW, I already found an appropriate solder point with TTL MIDI in on the device. Looks like BB doesn't support Syx at all, since passing the MIDI data is done by SW I'll probably implement a kind of filter no to bother the poor BB more than needed. Thanks again, freddy

TK, thanks for the reply' Hmm, that sounds like the configuration I was trying to avoid - converting the current loop to TTL and driving separate MIDI output circuit (ehm, basically a single resistor). The idea was to build a small portable Bassline Synth using 4 BassBoy modules and using Core 8 with SCS to configure the them - each module requires 5 DOUT pins (4 for selecting MIDI channel and one to select module operation mode). Looks like a 6th DOUT pin will simply be used by TTL MIDI output and the Through function will be done by software by using MIDI Router app bits and pieces. Makes sense - thanks again! Cheers, freddy