Korg Forums

i found this online, could someone explain this further, or even make a simple diagram



Adding MIDI In

The cheap way

If you want to be cheap, you can simply connect the signal pin of the MIDI jack through a 820 ohm resistor to the RX pin of the microcontroller. If you do it this way, you also need to connect ground from the MIDI jack (the “NC” pin) to ground on the board.
Serial MIDI
Connector In

#2 (Rx) ----- 820r ----- #5 (Signal)

#5 (Gnd) ---------------- #2 (Gnd)

sussed it, u connect the PIN 5 on your midi out cable to the RX pin on the serial connector of the monotribe , then connect the PIN 2 on your midi out cable to the ground connector on the monotribe = MIDI

obviously make sure u have the 820 ohm resistor between the RX pin and the midi cable

Have you seen this one? It's expensive, but it looks clean and tidy:

http://www.ebay.com/itm/MIDI-to-Korg-Mo ... 231ae41ce7

Your 2nd post seems to be a simple re-phrasing of your first
Unless I'm missing something..

sauce wrote:Have you seen this one?

Has anyone tried one of these? I've got the Amazing Machines mod (and it is awesome) but I'm curious to know the effectiveness of the one Sauce linked to. It just seems too good/easy/cheap to be true.

And could it work as MIDI out?

I'm interested to know if anyone has any experience with this MIDI to sync adaptor as well, if it works it would definitely beat disassembling the Monotribe and having to drill holes in the case to mount the jacks.

Hello.. I don't think it will work as a MIDI out, but I think it is simply the very same configuration as is in the second post, but in a pro package.

well im making my own now, which is basically the same as amazing machines only its costing me £2.50 in total as apposed to £50, im using the 6N136 chip for the OPTOCOUPLER and my brothers going to get me the rest of the resistors etc from work, heres the diagram for midi in (bottom one by nitro2k01)
http://4.bp.blogspot.com/-mxV59WLyhvI/T ... chemat.jpg

you can also see the mod at the top for midi out which is far simpler as it requires no chip, but i dont need the midi out on the monotribe in my setup

with the new V2 monotribe update the monotribe can even recieve velocity data using this mod with the optocoupler chip

i have decided to go with this mod as in my original post i was thinking of using the cheapest and easiest mod, which is all good and well but it does now wirk very well with electribes so after searching forums etc, the majority chose the 6N136 chip midi mod and is working like a dream

BTW the midi to sync adaptor mentioned earlier will only work for tempo, so will not respond to note messages, you need the proper midi mod for that

im waiting for the chip to arrive, and when it does ill picture and video the procedure so others can copy and show it in use with the EMX-1 as the controller.

Basically i have the EMX-1 midi out to a kenton midi thru box, then from the kenton midi thru box to the microsampler, then the microsamplers midi goes to the microkorg XL so i can take advantage of the microsamplers polyphonic quantize sequencer to control the XL (EMX only has mono sequencer)

as you can see i can just plug my monotribe straight to the kenton thru box, select a channel on the EMX and control it with the EMX's nice and simple 16 step sequencer

emagine if the glide on the EMX somehow transmits as i know pitch bend does, we will see, if so we will be looking at a TB-303 and more

Sauce said:

"Have you seen this one? It's expensive, but it looks clean and tidy:

http://www.ebay.com/itm/MIDI-to-Korg-Mo ... 231ae41ce7

"

Yes i Got it - had it plugged into back of an old zoom mrs4 4 track recorder - happily sent a start signal... bpm .... and stop signal to the MonoT

Plan to cable the mrs4 to a midi quad thru - the MonoT, a sp404 and RT223

sitting on top of the world : )

That's good news!

has anybody any experience with Irig - Sampletank Midi - looking at the ipod touch version...

Hi, just registered here, cause it seems the right place here

Sooo, I added MIDI to my Monotribe using the "quick-and-dirty"-version with the 820 ohms resistor. I hooked it up to my old Alesis Keyboard and it worked like a charm. Then I connected it to my Microkorg, because tht's how I would set it up in my live rig, but it doesn't work.

I searched all over the manual, the internet, everywhere but I could'nt find a solution. Only the information, that some MIDI-devices don't have a ground connection on their MIDI-out and will not work with the Monotribe because of this. So I soldered a wire in my Microkorg, connecting the middle lug, aka pin2 on its MIDI-out jack to ground. But it didn't help. So, what's wrong?

I think I have set it up right: going from MIDI-out to MIDI in, sending on Channel 01. It's no rocket science, is it? Still no signal…


Here's a youtube video of someone controlling the Monotribe with his Microkorg, so obviously there must be a way…
https://www.youtube.com/watch?v=N6ER9L5Zih4

can you help me?

You need to use an optoisolator really, the resistor version is not really the proper way. Re the ground connection on the midi out, look at any schematic for midi pinout and you will see a ground connection on the middle pin, it is interesting to note that the 'amazing machines' miditribe does NOT have this, I would not want a ungrounded device, aside from safety and the potential to fry the monotribes microcontroller, its really not good practice. If you can't build your own there are a few other guys making them properly on ebay, and cheaper than the amazing machines rip off.

Have a look at gameboy genius midi page, all the info is there.