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Topics by yogi
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garvalf wrote:@masl: I've seen it's not possible to comment on a kickstarter project if you haven't backed it. So I asked and the creator said it will be possible to order shields in the future, on his online shop (when it will be ready).
And I've finally got my shield:
It works well, and has a great clean sound. I managed to make it work with the LMMS sequencer (multi-track).
Great to see they shipped! Will be watching My mailbox 
Would like to hear more on your setup, are you using the 'midi bridge' arduino FW and the editor software on PC?
Yogi
catskull wrote:Hey Yogi, thanks for your post. I've actually been working on this quietly for a bit now, more as a personal hobby project than anything. For my initial version, here's what I'm shooting for:
- Each of the 4 outputs are channel selectable. Regardless of input channel.
- Volume setting or offset per channel. So you could set the output volume of CH1 to 127 (max), or you could increase it by a factor. Maybe a percentage of the original volume, or by a constant. That way dynamics may still work.
- Pitch Offset. This will probably be a percentage. Almost like a pitch wheel but more fixed.
- As cheap as possible. I'm hoping for $50 including a semi-decent case.
- Actually purchasable. Seems like most devices like this are harder to buy, like the two you posted. No PM'ing people on forums.
Everything is/will be released as free and open source under GPLv2. If you or other want to add your own features, that will totally be supported! And contributions back to the "official" firmware would be nice!
I've actually lost a bit of steam on this, so your post has kind of reignited my spark a bit. Let me know if you have any questions.
Nice feature set, will be keeping an eye on the project. This sort of box would really help when you have a few tone generators and want to layer them up. Otherwise you need to route everything through a PC and use something like MidiOx.
@ Ledfyr I think I looked at your RPi project, very interesting. I'm really N00b with these and 'nix too, just got one and been thinking about which way to go. Leaning towards a real compact soft seq sort of thing. Really like Seq24 on the PC here and think it would be cool on a 'pad' type setup. Or maybe use it as a tracker box.
Yogi
Sorry for this necro bump good idea, have been thinking/needing this sort of gadget for a while. There is the Midibox.org midi mapper project that's real flexiable, mimicks MidiOx in channel routing.
http://wiki.midibox.org/doku.php?id=hom … idi_mapper
And another, the MB Router for handling midi interface routing.
http://ucapps.de/midi_router.html
But what I'm kind of thinking about is scaled back, closer to your concept. A small circuit (for modding) to transpose the IN channel, and filtering of certain messages like active sensing. Mainly I'd like to build units to use with some of my keyboard controllers, being able to route channel 1(the default or only channel for alot of KBs) to any other channel on the fly.
One feature that might be of use is having a KB split to selectable channels. I.E. upper end to Channel 1, lower end to Channel 2.
I guess that alot of my wish list can be handled with the midibox NG build, plus added features like CC knobs and switches which would be nice with a really plain KB. IDK, still kicking around ideas :\
Yogi
This is really cool. Are we talking about bare boards or built (must be just board at the quoted price)?
Yogi
A very long time ago I got some tilt switches. They consisted of a plastic box with a ball bearing (about 1/4") and 4 solid wire contacts on the inside walls. The box is about 1/2" x 3/4", so the ball can only travel about 3/16" along the long axis and only 1/16" between the short axis walls.
The way the wires are setup- 2 in the center on the bottom, the ball rests on these when the box is level. Then a contact at either end of the long axis about half ways up; so when the box tilts, the ball bridges one of the bottom and a side contact. And when the box levels again the ball goes back to center on the 2 bottom contacts.
So these are only a single axis and not very precise. They could be wired to detect level or a left or right tilt. Hope this makes sense.
Yogi
I've looked at this awhile ago, and it would be very doable on a Arduino. Mainly the project is about fitting into a tin, and if you aren't worried about that should be able to wire up the pots and switches easily. Seems fun
Yogi
Not too sure of the lotharek board, looks like a RGB breakout. The GBS device is an upconverter; brings the low ST scan frequency up into the range used by a VGA monitor. But I could be wrong.
Yogi
Great comparison, thanks. Just found out about the SSU yesterday, ordered 2 after hearing. The SwinSID nano was pretty good but the Ultimate sounds really good.
Yogi
Norrin_Radd wrote:Kenny Loggins - Danger Zone (1986): https://www.youtube.com/watch?v=siwpn14IE7E
One of my favourite things about going back over all the obvious 80s megahits is when you realize just how much FM is being used, or how much of a song is anchored on a fairly simple FM sound. FM basses, in particular, are all over the place in 80s popular music. None more blatant and true then Danger Zone. This was the most rented movie of all time for a while. Maybe still. I can't remember where I read that statistic. But just think of how many people heard this song, and this bass, while looking at Tom Cruise. It's weird... It's awesome.
This FM Bass sound might as well just be a Sega Genesis preset. It's not a rare or hard to create sound at all either, which kind of showcases how much power there is behind FM. The glorious presence of a warm metallic punch.
Yea it's really amazing how much the DX synths were the sound of the '80s and '90s. In some ways it was overused, or rather the stock patches were; very few had the knowledge/skills to program patches themselves. I feel like that lead to FM falling out of fashion ( well wavetable synths came along also).
Whoa, wait. What is this thing? Is he building a synth, or a VGM player?
Mainly it's a YM/PSG module(s) that is controlled by an STM32F4 core and the Midibox OS. Sauraen's main goal is a full synth but the first app release is a VGM player http://wiki.midibox.org/doku.php?id=midibox_vgmplayer
ATM he is working on the midi and then plans to implement the CS. Direct reg control from the front panel
Almost got my build up and running, really looking forward to the VGM app. When the midi app is released just a simple FW upload. But really, the VGM player is useful with DefleMask or VGMMusicMaker right now.
Yogi
Yea! Nice tut, spread the word for FM Will be looking forward to your next one.
Comes at the perfect time, with this HW project moving along- http://midibox.org/forums/topic/19678-m … ent=171357
The first release is a VGM player demo and Sauraen has plans to support most of the midi assignments of the GenMDM (which FMDrive can also output) in the next app. Good times!
Yogi
Damn sorry, been a few days since I read the other page of this thread. So like I posted before, the GBS scan converter is said to do a decent job of RGB to VGA for about $30 on Ebay, although some purists find fault with minor screen issues. Here is a thread that may help-
http://www.atari-forum.com/viewtopic.ph … ;hilit=GBS
If you skip to one of the last pages there is a minor circuit that improves the ST's sync into the GBS.
There is a thread over @ AtariAge that has some info for building a multi sync switchable cable or Best sell a similar one (but kind of spendy).
Yogi
P.S. If you do build your own cable, the one you ordered may be good for the 13p DIN plug; If you shop for a new DIN look for the type with solder cups, think JamesCo (or Digikey ?) stocked them at one time.
That should do the trick, just a matter of picking off the composite video sig on the 13p DIN. Of course the ST must have a video modulator to generate the composite sig in the first place I've built such a cable and the few bucks I saved didn't equal the time of working with the cramped 13p DIN. So yea $12 is worth it.
Good deal with your Monitors! You should be good to go. Fingers crossed that the ST is working.
Yogi
Have to say that the composite video of a (mine) STFM is not so great. Maybe on a CRT/TV it is better but on the LCDs I have on hand with composite in, spending more then 15 mins on it would give me a headache. Been on the lookout for a multi sync that will do low res but to no luck. Found one that does Hi Res, (beware not every multi-sync LCD will do HI Res). Ended up with a scan converter from Ebay, GSB-8220 I think, fingers crossed for Lo/Med Res. Yet to get it all hooked up but heard OK reports.
Point being: not having composite out isn't too great of a loss, as most will end up wanting a better display sooner or later 
Yogi
P.S. Great score by your GF, she's a keeper!
cyberic wrote:Tahnks for your answer
But:
- When the rom loads, is the song started, or stopped? do I have to press start on the first controller ? (it would be great to have the status displayed on screen)
- The doc says 'Key presses on controller 2 act as the clock input, and will run the next step of the NSF'. So what key is it?
Thx
Here are my notes:
FamiSlayer V6.66:
Controller 2:
Start = Sync Pulse input, in play mode
Controller 1:
A = PAUSE/PLAY TOGGLE
B = STOP PLAYING
UP = INCREASE SONG#
Down = DECREASE SONG#
LEFT = REWIND - reset to the beginning of the current frame
RIGHT = FAST FWD - skip to the beginning of the next frame
START = RESTART SONG from the beginning
Believe that it boots in the Stop mode. So press A on pad1, then toggle Start on pad2. Think these are correct
yogi
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