Steven_C

nice looking. There is a simpler version already in use on the Digico D5 live consoles.

We are all nuts for our pots! ;D Jaycar in Australia have 'em. Doesen't the supplier you got the pots from sell them? ...Steve

Just a reminder... Greg's PCB isn't recommended for new boxes... unless you have one already lying around waiting to be used, or you only want a MB64 with 64pots, 16 Led's. and 24 pushbuttons... otherwise it gets quite tricky down the track! here are the pull up resistor details... from pin 6 to +5v (1kohm) from pin 18 to +5v (10kohm) from pin 20 to +5v (10kohm)

There are two 10kohm pull up resistors (check new core diagram) and 'bypass' capacitors, and I think there is one more resistor? (I'll check when I get home) You can probably skip the bypass caps though. Also the backlight dimmer circuit needs to be modified... I just put a 220R 1W resistor in series with the backlight (5V) and removed the backlight transistor and base resistor from the circuit. I think thats it... Oh, and check the core diagram for bankstick connections oh yeah, I didn't worry about the 100R resistor. I am also going to try a switch to change between 10Mhz and 20Mhz Xtals if I want to change to an old firmware (PIC16F877) ...Steve

Go to the environment settings for the control surfaces, I think, find the LC icon, click on it, and settings come up in the panel on the left, find the fader mode selection, and highlight current setting, and set it to silent.

I haven't used the environment for more than a year, so I forget! But I think there are sample environments for download from the ucapps site somewhere? Maybe it was on the MB64 page...

;D Thanks, I thought so! ;)

Check that the pinout confuguration in the application code is the same as your soldering. How many DIN boards have you got connected? If you are not using the full set of pushbutton switches you will need to do some custom allocations in the code. "the mb dosent work anymore"... Sorry, not sure what that is... maybe bad soldering causing a short when you press one of the buttons? Your non- motorised faders should work fine... just use the LC XT in the 'silent' mode... (setting within logic) the 2*16 will work but will not be able to tell you anything! I would explain further but I really need to sleep now.

TK wrote: I am updating my old MB64 to MIOS standard, I am using Greg's PCB. (Built it in 2001) Concerning the pull up to RC2 - on the current core schematic, the pull up appears to go to RC3, and not RC2 as TK mentioned above. Have I got this correct? ...Steve

Wow Thorsten! You have been so busy! I have a real respect for the level of programming and electronics that you are working at. (Inspiration! ;)) The info on the motofader page http://www.ucapps.de/mbhp_mf.html is very educational. all the best, from Steve

Nice!

Yeah, 500mA should cover most projects, but up to 2A can be required for a MBLC for example. (mine has a 1600mA supply, but if I built another one I'd go for 2A just to make sure.)

I never noticed this before... what's it doing?

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&category=38071&item=7321132921&rd=1&ssPageName=WDVW

There is an old windows driver that suits win95 to winME, see http://www.m-audio.com/index.php?do=support.drivers I have the serial version, and it has a crappy driver. (half works on one PC, dosen't work at all on another) It could be easy to clone, as its really just 3x PIC16C54-XT/P, (with a few other components) but whats the point in cloning something that dosen't work? What does the paralell version have inside?

out of interest... I pulled a "20k" fader out of a graphic eq the other day, and it measured more like 42kohm. When I held it up to the light, I could see light through the printed resistive tracks on the board! (where it was worn) No wonder it went high in value! (and scratchy)

You can't use normal midi CC's to control the JX-8P. (I've tried) It is all Sysex data. do a forum search to find previous discussion on what is involved in making a controller box for a JX-8P. (requires MIOS editing that no-one has done yet.)

Just wondering... Does anyone know where I can get some Alps 20kohm log 45mm travel slider pots from? The device they are from is a UREI graphic eq, but are NLA as a replacement part. Unfortunately they seem to be a special OEM part from ALPS... they don't appear on the Alps database. (though they do look like the "superslide" series) (they are for the attenuation level, hence log curve) thanks, from Steve

treasure! :o

Have you seen this MB sid yet? It looks so cool! 8) ;D http://69.56.171.55/~midibox/forum/index.php?topic=4424.0;topicseen

something like this from ebay? http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&category=7266&item=7317483118&rd=1

I believe some keyboardists use a simple mixer, like the idea that you describe. It is called a line mixer. Though I've never seen one.

Hi Thorsten, Many thanks for that reply. I played around with bios com port settings (I hadn't thought of that!) but haven't got anywhere yet. (No IRDA). I think I'll try to hunt down an old paralell port midi interface from ebay. Or maybe I'll dig into modifying the midibox 64 so it can do the sysex/synth editing functions that I was going to do with software. (long term goal) I dunno... ...Steve

thanks for checking that out, George. Oh well!...

In case you're interested, there is an article describing a "midi theramin" in Silicon Chip magazine, April 2005. But its not a real theramin (Just sends midi out) and its not a TK and friends midibox!