unikoi

I was shuffling through the SmashTV store for kits and parts required for building the MBSEQV4L, but thought that bulk-order might be a bit ´cost-effective´, cheap-ass-no-money-student as I am.:) Thank you for the link, though, think I'll just add the CORE_LPC17 to the cart as well. Regards, Asko

Damn, After reading this topic I think the term "language-barrier" has evolved to have a whole new meaning for me. (my 2 cents.) Now, for my actual question: is there currently active bulk-order-list for mphp-core-lpc17 PCB? I'm in the process of harvesting info and parts for building a MBSEQV4L, so that's the reason for me asking. Regards, Asko

Thanks!:) Ok, thanks for the info. I have an accound in there already, so I'll upload it there too. Meanwhile, I've been enjoying Sammich a lot these past few days, and got my friend interested in building a sid synth as well! (he's a real deal c64 enthusiast too) While i've been using and learning to use all the features the Sammich has, various questions have risen up concerning the user interface AND the synth itself. 1. Has Midibox Sid v.2 the ability to send MIDI clock? All the other synths I have, that have MIDI OUT, do send MIDI clock when the synth is set to Master. I've started to fear that maybe my MIDI OUT isn't working as it's supposed to. 2. When in Multimode, when I apply filter to all instruments, change different waveforms to different instruments, and play in 6 voice polyphony, some of the instruments get really distorted. I know that the filter distorts the sound giving it that destinctive chip-sound, but it still feels mine is getting beyond that. Please Doc, tell me i'm worrying for nothing! 3. In modulation matrix, first couple of operations are easy to compute, but i seriously have no idea what XOR,OR, AND, MIN and MAX are. I've played with them yes, but with more knowledge comes better understanding. Is there a simple explanation for them? Also, in both sources and triggers, after the parametres there comes numbers 0-127. Are they midi CC#'s, or just random numbers? :D 4. When I put on the power, everything works fine for a while, but after some time, some of the buttons start to act a bit wonky. Sometimes they don't respond, and sometimes they respond giving me a double tap. It isn't a big of an issue, but it has slowed down my workflow when running through menus (couple of time's when i've exited the wavetable-editor to go to i.e OSC-menu, i've jumped right to the root menu and accidentally switched to a different preset - Thank heavens for the key command for "autosave"). I'm thinking the cause may be a bad solder joint somewhere, which gets worse when warmed up? I've checked some of the solder joints, but am unsure which ones are critical to buttons, and i wouldn't want to risk re-soldering any working ones. Could the cause for my problem be elsewhere? ..And now for the final one: 5. I have BCR2000. I've mapped it so I can use it to make/edit sounds with Sammich. I've started to long after a built-in control surface, because of the "feature" the midi-controlling holds.:)(It's really tedious to track back and insert the parameter values with sammich's encoder, when i've first tweaked with BCR2000) Then, I stumpled upon a program called BC Manager, program published by Mountain Utilities (Check out their web page here) and forums where people have succesfully made Behringer's controller control hardware synths via Sysex-messages. Therefore, I've come to believe that it is possible to send Sysex messages to sammichSID as well. But, are they non-destructive too, like CC's and NRPN's, or can one use BCR2000 / BCF2000 (I myself have BCR2000) as a CS for Sammich? I have no experience on Hex-editing, nor Sysex or whatnot. The little I do know, i've learned from these sites, and from the BC-manual. If this can be done, I would gladly make presets and layouts for different engines for the BCR2000 and share them here or/and with anyone in need, but I do need help from someone who understands the code-part.:)

So, I finished my building my sammichSID while back, and have been using it for making music ever since. Thank you Wilba and Nils for your awesome design, and support when it was called for. Here's a link to a song I made using only Sammich as a synth (drums and percs excluded). Hope you guys like it. :) http://dl.dropbox.com/u/3584942/unikoi_-_sammich_tribute.mp3

All right, sorry for me to took a while, to come here again.(had a break from building sammich and also forgot my password, haha.) Anyway, with your help I checked the base PCB for shorts between 5v and GND, there was none. But, I then checked the regulator leg for 12V, and turns out that it was only 0,5V. So I started looking the problem between the power switch and the regulator (i checked the power switch, and it was all right). Reason for my problems was the rectifier, AND occasionally power switch, some really bad solder joints in them. I soldered them again, and everything worked like a charm. One problem i had with the preset-upload as well, was that it strangely cut the uploading process in the middle, saying midi-connection lost. i think it was the 5th or 6th time when it got through, and the reason it did that for me, was because of a PSU-tip too loose. changed to a smaller one and works good so far.No random resets. So, thank you for your help, because of it i'm an owner of a working sammichSID!:)

Oh yes, sorry about that. I did check that as well i powered it on, and took a reading from 12V rail to the 12V labeled places on the diagran, with 20 on my multimeter. It gave 0,33V. So, is there something wrong with my voltage regulators? I used non-conductive thermal compound, and check the pins as well. There's no connection between them, or the heatsink (or at least it didn't beep). Thank you for the advices. Edit: Ok, fixed on issue. now the reading of one probe on 12V rail and the other on other 12V place/9V place is little over 11V. Does that mean the regulators work and the problem is elsewhere? i tried soldering dc-socket again, but didn't help. I suppose the two pins have to be connected. Any suggestions how do i start looking for the possible 5V and GND shortage?

Yes, all my jumpers are horizontally alligned, first one is on the 5V backlight voltage, other 2 are on JMI and JMO, and the SID-jumper is on JP horizontally as well. I checked up dc rails' connection with GND but didn't find anything. Then i checked the connection between the 5V rail and the third joint from dc-socket. There's a connection. If it's the dc-socket's ground leg the others being 12V/9V and 5V, then there's a short with that, although i don't see any solder-connections or anything else. I'll try to resolder that one, and see how it goes. Thank you for the reply.

Thank you for your quick reply and information! Unfortunately i don't have a connectivity tester in this,but i'll go and see if friend of mine has one.I checked the power supply, and it's giving little over 12V (12,15V to be exact). Is that ok, or should i used it only on 9v? I also set the multimeter to 20, and checked the DC rails again, and this time i got readings! :o The other, which i assume is the 12V rail, was giving 11,78V, while the other, assuming that's the 5V rail, is giving only 0,31V, while the other probe is connected on GND. Should it be more than that, is the problem there, or should i just go find the connectivity meter and go with the instructions strophlex gave? Thanks again for info, guys, i again feel there's hope for me to get this work, haha. -Asko edit: i might add, that everything else was the same. No readings from what is labelled 12V on the diagram. Only readings i got was when i connected probes to dc rails and GND. edit: it seems that it gives the same reading (around 11,7V) nearly everywhere on board, as long as i keep the other probe on 12V dc rail.

So, i got to a point in soldering, where i finished my base pcb and congratulated myself. then i started building up the control surface pcb, and thought that why wouldn't i do the voltage test for the base pcb now, because it was built! So, i put the jumpers on correct places, took my regulated 9v/12v 500mA universal adatper (with multiple connector tips), tried which one would be best (there were 2), switched the polarity to positive, plugged it in, pushed the power button, took my multimeter and started measuring, but nothing. Everywhere. Then i tried different connector tip, still nothing. The meter showed 0 V. One exception was that, it gave readings when i took it from 12V and GND, or 12V and any other for that matter. (007 on 2000m DCV) But, it will give that regardless if my psu is hooked or not. I haven't yet succesfully tested 5V on my Sammich. So, this being my first time to troubleshoot, i'm posting here to have suggestions about what should i do? Is there a short circuit somewhere, is there something fried, is it because of my soldering (tried to stay loyal to the "check twice, solder once" -motto,though), is it possibly something else? Did i forget something? I first thought that it was just the power socket, so i soldered it again, but nothing happened. Help is very much appreciated. -Asko

Ok, thanks for the info.:)Hope there's enough amber/red LCDs left, so I can have one of those.

Does the high-power LCD affect in any way how the sammichSID would work/function differently , or is the extra-amount of power needed low enough to not have an effect?

Yea the guy who sold it told also that first it was okay, he played a few games, then he switched it off and right back on again, along with the black screen of death. Thanks for heads up so I won't break the beauty into peaces just yet:) Or when it arrives, that is.. Edit: worst case scenario though is, that both the PSU AND the C64 are broken. :pinch:

Wow! This is great news!:D For the past week I've studied intensively about how to build a SID-synth, gathered the information and layouts, read the forums and the wiki multiple times, learning about the different modules and their connections & interactions, and slowly preparing to do an order.( I'm a sort of a noob at building something size of this "magnitude") I recently bought a broken C64 with PSU, so I could take out the 6481-chip (and PSU of course). But this, this is something else! I'm most definetly in for one! At least!:) Cheers, Asko