/tilted/

absolutely. icky = not nice. The "white" that an RGB LED makes is the combination of the red, green and blue cells at once. as these cells are individually quite peaky (ie, the red is very red, the green is very green, they have narrow bandwidth) this means the output of all three cells as "white" is only an approximation. Thewhite you get from a white LED is the result of a mixture of phosphoric chemicals bonded to the LED cell (I think...). These units have a much more pleasing white light output than the full mixed RGB option. The only reason I suggested the RGB was that I hadn't realised there even was a White/Red led available.

Unfortunately, we might be running out of luck here, unless we can find someone who can read Korean. I can't find another distributor who is prepared to actually make a sale!! crazy.

Hi Sasha. If you need red/white leds, perhaps you could try using an RGB led and a diode 'OR'? ie, with series diodes, like this: [tt] D1 Dout (Red) ----->|--+--Red _ ^ D2 | +--Green Dout (White) --------+--Blue [/tt] does this make sense to anyone else? Ie use a series diode (D1) between Dout(red) and LED red cell, Join LED cells green and blue together, add series diode (D2) between joined green/blue line and join between diode and red cell. D1 protects your DOUT(red) line. D2 prevents red line from driving green and blue cells. If space is at a premium, you could do the diode work at a distance from the LEDs, and still need only 3 pins for your LEDs (RED, !red, common). Just a thought... you might find the "white" made by an RGB LED is a bit icky.

Did I miss a meeting? 0.27 inches is 6.86mm so, do we have a bulk order of these yet? or do I have to buy 1000?

why add more software? You could get a midiBox to do what you want to do. You can program midi commands, so there's no reason why you can't do strings...

I got the Amadeus quote. I think they settled on Italian in the end, didn't they? Was it a discussion about the marriage of figaro?

I thought "pulls" had a different (somewhat dirty) meaning. But then, I would. Somewhat like "tugs"...

Wha? Also, Wha?

My MFs arrived, MFs! I'm so excited! Big thanks to snykehd for organising the order! Wow! So awesome. Now I can start working on panels. The order is concluded!

Perhaps you could build a midibox control surface...!? I mean, using MB64 or 64E to build a dedicated controller in the tradidion of the LC, which waits for a returned value before lighting the LED etc...

Perhaps a combination of keys to work as a toggle between slow and fast modes? Fast is of course great for big live moves, but I have been known to do very fine stuff live (like setting frequency of ring mod or FM oscilators, teeny moves here make big changes) Just a thought...

I second. Lame. BS. Does that mean BullSh*t, or Br1ttn*y Sp*@r5, yo?

I would encourage anyone planning a bulk order to please also allow countries outside the EU. Quite apart from the fact that you will be reducing your bulk order size (therefore increasing your per-unit price) by restricting your mailing radius, is the reduction (to me) of the hard-won sense of community on these pages. I certainly speak for myself, but possibly also for others in far-flung countries when I say it is hard enough to get components here in Australia as is (especially the super-esoteric ones), without the sense of being excluded from these bulk orders. Speaking of Australia, can you imagine the impact if Wilba stopped mailing 6582s overseas? I can understand the frustration of the person running the order, when the order seems to take an eternity to be completed due to international postage delays, but to me on the other end, it is something I am (almost) used to, and can happily wait for, so long as the end result justifies the wait. To never be given a chance to participate in an order just feels exclusionary. This much said, I am also ALWAYS happy to pay extra for express and/or insured shipping. OK, down from the Soap-box. P.S. as at today, 20th Nov, my MFs have not yet arrived. I have not yet given up hope that they will arrive by christmas.

Happy Birthday TK! That is stunning work Seppoman. Now I just need to justify getting one! -or maybe about 20!

And even a webcam should be worth a couple of thousand words per second!!

Ahem! ...and what Wilba said... ;D

Sort of. The term "sum" in the electronics world is more often used to describe mixing two (usually analogue audio) signals together. The way the 7809 (and all other 78xx and 79xx regulators) work is that they take an input voltage (ideally fairly stable, from a rectified and smoothed supply) and output a voltage which is referenced to the "ground" pin. In most applications, the "ground" pin is connected to 0 volts, so the voltage is (in the case of a 7809) would be +9 volts, reletive to the ground pin. In the case of the SID PSU, the ground pin is referenced to a 7805 regulator. Therefore the 7809 output is +9 volts, referenced to a voltage of +5 volts, referenced to ground. So the output is 0 volts + 5 volts + 9 volts = 14 volts. Which I suppose, is kind of what you said... ;D

When you say "works on basically any frequency", how big a range are we talking about? Does it go as high a 14.318? I think you'll have more luck with getting the pitch right if you clock it as high as it will allow you to go. You'll reduce your error for a given pitch, the trade-off being you'll get fewer western scale pitches in your range. Be careful though, you might be running toward thermal overload territory (which could overheat/blow up your POKEY). Also regarding the pitch issues, is there any other means of setting pitch with the POKEY? As far as I get it, it's one 8-bit register (AUDF), and some means of selecting the clock frequency (Fin) to a selection of divisions of the master clock frequency? If this is it, I can't imagine you'll have a lot of capability for pitch bend (in performance). I'm now going to try plugging some other known crystal frequencies into that table, to see if there are some common oscillators which might work well.

The short answer is, sort of. The slightly more detailed answer is that while you will get the right voltages from this PSU, you'll also get a lot of noise and ripple on the supply lines. This noise will be clearly audible on the SID's output. Where do you live? I have several C64 PSUs, but I live a long way from most people. (Australia).

If you are using guitar pedals, I'd suggest you continue running them on individual batteries. It can be a pain to keep changing batteries, but running regulated 9v over any kind of distance presents its own problems. Guitar type effect pedals typically employ NO regulation (as they are intended to be powered by batteries), so be careful there. Also a lot of older battery powered synths had no regulation, so be careful,. Feed these babies too much juice, and you'll be sorry. The basic calculation to bear in mind with mAh ratings on batteries, is that the rating given is the current required to discharge the battery to a certain level, over an hour. So if your rig is around the 2A mark, your 1800mAh battery will be flat in under an hour. If you need to run this rig for 3-4 hours (or let's just say 5 and be safer) - you need at least 10000mAh capacity. This may sound like a lot, but bear in mind you can gang these batteries together in parallel to get greater capacity.

You're talking about a 10MHz crystal here. They're a very standardised component, with very fine crystal to crystal tolerances. If you sync the primary crystals between pics, the indivdual PLL circuits might lock, but there's no guarantee. If they don't, the most they'd be out by would be 2 clock cycles (as it is a 4x PLL), which at the 40MHz PLL speed is 0.000000025sec or 25 nanoseconds. This is not the kind of phase discrepancy which can be heard by a human. If you don't sync the oscillators, the only problem might be a discrepancy in the individual crystals. This would be very slight, something in the region of +/-0.5ppm, or around +/-0.00005%. Since we're comparing two crystals, this means a worst-case difference of 0.0001%. If you can tell the difference between a microprocessor running at 40,000,020Hz and one running at 39,999,980Hz, then the CIA would like you to report back to Area 51 ASAP. [move]::)[/move] Of course, all of this is a moot point anyway, as the master PIC communicates to the slave PICs what to do and when to it anyway, doesn't it? And besides which, do you really want all your SIDs to do exactly the same thing? Or are they doing different things? Most likely, you'll be playing different notes, or pitch/phase offset 'unisons', in which case what point in synchronising...?

I was contemplating getting a WIndows Mobile 5.0 device and running Griff. It seems like a very capable device. I think I like the idea of a phone that I can compose full sequences on.. :o How good is it, that we now live in the future! ::)

Hi everybody. Just wondering. I've been a busy little bee lately, and I'm contemplating getting a PDA to keep myself together. I've also been curious as to the possibility of doing some sequencer type stuff on a PDA. Anyone in here have any experience with PDAs and audio/midi?

I've made a mashed version of those two schematics, with a little boolean in there too. If someone can give me a hint as to how to host images (on the wiki?) I can post it.