/tilted/

shame about the really odd oscillator. but hey, we've always been able to find weird parts before! Let me know if I can help.

Scheiße.

Yes, I can also see through time. Also, I'm trying to learn Deutch. And recently enrolled in an OU course on Calculus / Linear Algebra. Ok. I'm a nerd.

No, you don't need a special driver. according to the datasheet it uses the Hitachi controller. I would be quick to jump to a wiring error as a conclusion. In each of the characters shown on screen in the photo, the d2 line is set high, and the d7 is set low. See table below. [tt] Character In binary $ 00100100 W 01010111 G 01000111 | 01111100 ? 01111111 . 00101110 w 01110111 n 01101110 E 01000101 4 00110100 N 01001110 l 01101100 g 01100111 7 00110111 6 00110110 5 00110101 This bit is always '1' ^ This bit is always '0' ^ [/tt]

Nice!! Now you need 2 more meters, and you can do an MTC display with meters!

Good! Judging by your vids, you seem like a bit of a mental-case, which means you'll fit right in. Of course, standard advice follows: http://www.uCApps.de http://wiki.midibox.org/

so steev, did you try disabling the filter? also, did you try checking, re-checking, and re-re-checking your soldering? are the core/sid on Smash/Mike boards, or homemade boards, or veroboard? did you try using the testtone app? or the interconnection app? what were the results?

hmmmm. Interesting. I have seen some things where (I think) an atari or similar was connected audio -out to composite vid in of a TV or monitor. I'd say the FM would be capable of producing the upper partials required to do some video signals. It might help to remove the HF rolloff components C8-C10 and C12-C14. Dammit! I know I saw this somewhere!! Happy trails, try not to ruin your OPL chip, or DACs!!

My completely useless suggestion is: attach a high-gain opamp to it, put it in an old Speak'n'spell and call it "aleatoric". Or, try disabling the filter (the SID has this option, try the menus, sorry...) as the older chips often get/have bad filters.

If the DAC is clocked by a 11.289MHz crystal, then the DAC sample rate is more likely to be 44100, 88200 or 176400 samples/second. this would give exactly 256, 128 or 64 cycles per sample respectively. I like those knobs. - I found some larger ones (like about 27mm dia) from HKSS, but they were a little pricey for my liking (somewhere in the region of $5-$10 each, hard to justify for a piece of milled al). Nice though.

Not yet. In any event, the waveform made by a guitar might be a bit tricky for oscilloscope tuning. How would you do it? with a dual trace, and a reference pitch?

Also, I'm stretching here, but I think the "A" and "T" relate to voltage tolerance % and/or thermal characteristics. I can't remember what these values specifically refer to, and in this application it really doesn't matter.

That's awesome! Can you do me a 6 channel version, for divided pickup use? only kidding.

Of course not, but to implement the LED matrix code, you could a) do a whole lot of work and hope it works... or b) use a small number of MIOS drivers to make the whole smash a lot easier. Mind you, the eDrum 24 has multiplexed AINs, so I'd imagine Admir is capable of coding a 24x8 LED matrix using shift registers. I think my concern was more about physically connecting the two projects, and any ramifications which may arise. I can't remember what I was thinking. Lousy brain.

Hi SLP.. Just a quick warning. Those existing chips are isolated tab package. This means that the chip has a thermal connection to the case, but NOT an electrical one!! If you can, try to get isolated tab replacements (although I've never seen them before in a regulator). Otherwise, get the standard package, and some silicon impregnated insulation sets for TO-220... have fun with your new mixer!

Sweet! We broke Re'an!! Sweet! We're still getting the knobs!! Sweet!

Closed source it is, but Admir is a very accomodating kind of guy. I'd suggest you build the meters as Stryd says, into a 24x8 matrix (this will fit on a single 4xDOUT board). Once you have this working in a replicatable way, see if you can get admir to do you a firmware with the input meters replicated a-la the DOUT matrix (you would of course require TK's permission to do this) and it should be simple -ish...

The eDrum already has velocity meters on the main LCD display, for the purpose of setting the gain controls.

Got mine today. Mind you, I've been away for 3 weeks, so they've likely been around for a while... Thanks smaudio..

For the record, using "ain't" in that context, while technically incorrect, is totally sweet. Frank Zappa did it all the time. ;D

the numbers may be as mundane as a batch number, or manufacture date...

Do the 914ks look like this: http://www.tkd-corp.com/02_products/pdf/p02_mf-914.pdf 303ks: no idea.

OK then... [tt]FM Core checks RA0 ;(which is connected to SIDcore RD7 - E pin) RA0 returns high ;(meaning SIDcore is writing to LCD) FMcore returns without writing, does whatever else it does... RA0 returns low ;(meaning LCD bus is free) FMcore sets RD7 high at the same time SID sets RD7 high FMcore checks RA0 again RA0 returns high ;(meaning SIDcore has just now set RD7 high) FMcore returns without writing, does whatever else it does... RA0 returns low ;(meaning LCD bus is still free) FMCore writes to the LCD. [/tt] I don't know the ins and outs of the app, but I'd be pretty sure that the SID and FM have enough work to do each main loop that they only would write to the LCD when there's something to say. ie they wouldn't need to write each cycle. In which case the race is extraordinarily unlikely since the human brain would tend to edit one synth, then the other, not both at once. That said, the FM synth also uses the LCD bus for communication with the OPL3 chip, so I think we may be.... boned. :-\ [edit] spelling.

Well, just for the record, methinks it's not too difficult a build, and will require only a rather small software adjustment. MTE, I think you can do this... ;D

you may have confused left and rights. The LC does several: Bank Left and Right: Shifts the fader banks to the left and right, by 8 channels at a time. Chan Left and Right: Shifts the fader banks to the left and right, by 1 channel at a time. Cursor Left and Right: Performs various navigation functions, like the one you describe.