Posts by Timbob (Page 56) - Forums

Oh you might also want to check your cable wiring on the gameboy port, since I'm guessing you dont have leds to indicate midi is actually working. You could also use the arduino serial monitor to see if its getting data (it would print garbage of course)

I do have the leds connected, They do blink when i sent data..
My guess is they should be blinking if they recieve data as well?

Anyway, they don't

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 884

885 Reply by Timbob Aug 28, 2011 5:49 pm

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

trash80 wrote:

Yeah I don't know. if you tried flipping the wires on the midi jack, tried flipping / disabling the diode, then its either the code that is running, the midi cable or host midi device, or the 6n138.
I've used plenty of the pro minis for various projects so I know its not that, if it is indeed the 16mhz/5v version.

Yeah, i'm gonna try getting another 6n138. And see if I can use it with something else, like a drum machine, if I find one

Midi-out was the main reason I built it, but it still would be nice if in worked

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 885

886 Reply by Timbob Aug 28, 2011 2:41 pm

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

kineticturtle wrote:

Are those speakers loud enough for basic monitoring onstage?

Ah no, I had to remove the speakers... pretty much everything inside... to fit in the arduino. So it's just a shell at the moment.

Besides, they are just a bit louder than the normal speaker, (and stereo) but the sound is not that great actually...

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 886

887 Reply by Timbob Aug 28, 2011 2:20 pm

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

kineticturtle wrote:

That is a mighty clever thing to build an arduinoboy into!

Thanks, I was quite pleased with that solution myself

This is how the total set looks like, I like the colours, blue and neon green go together nicely
I added an extra 1/8 inch connector on the bottom for headphones, and the arduino is connected to the gameboy via an USB connector that i wired to the external connectors.
I just made a gap where the pro-sound goes in

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 887

888 Reply by Timbob Aug 28, 2011 12:51 pm

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

2PLAYER wrote:

Send a picture of what you're done so we can take a look at it

I tried taking a picture, but i only have a phone cam at the moment, as it is blurry as hell, i added some pointers

with added lines:

Hope that helps in any way

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 888

889 Reply by Timbob Aug 28, 2011 9:33 am

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

trash80 wrote:

Timbob wrote:

It's a arduino Pro Mini.
But the strange thing is. Tx0 is connected to the midi out, and that works just fine...
I'll see if removing the diode works...
-edit-
No beans...
3.3volt or the 5volt pro mini?

It's the 5volt version.

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 889

890 Reply by Timbob Aug 25, 2011 8:02 pm

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

trash80 wrote:

What arduino do you have? thats quite annoying if they swapped the labels. (Ignore the labels, 0 should be rx to arduino and 1 should be tx from arduino) for it to be compatible with arduino shields anyway.
you can try removing the diode. if its backwards it will not work. other then that its either the 6n138 or the wires on the midi jack.

It's a arduino Pro Mini.
But the strange thing is. Tx0 is connected to the midi out, and that works just fine...
I'll see if removing the diode works...

-edit-
No beans...

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 890

891 Reply by Timbob Aug 25, 2011 1:23 pm

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

I rechecked everything.. resoldered everything.. still nothing..
This frustrates me

The only thing i could find that's a bit weird is the numbers after RX and TX
on 2players picture they are called RX<-0 abd TX->1. On my arduino pro mini it says RX1 and TX0
Don't know if that should make any difference?

Otherwise, I'll try to get another 6n138... see if it makes any difference...

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 891

892 Reply by Timbob Aug 25, 2011 9:42 am

Re: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

Thanks for all the tips. I already tried switching the wires on the midi in jack a few times... But that didn't help.

I'll go and check the whole setup again using 2players drawings.
Will report back after that

Go to forum: Nintendo Handhelds Go to topic: Arduinoboy Midi-in not working Go to post 892

893 Topic by Timbob Aug 24, 2011 11:21 pm

Topic: Arduinoboy Midi-in not working (23 replies, posted in Nintendo Handhelds)

Hello all,

I just made an arduinoboy, and well.. guess i didn't make it correct.

The Midi out is working just fine, I can send notes from lsdj to my synth.
All the lights work, it does the little test sequence when i start it up...

So, given the fact that those parts work fine, I assume the code should be uploaded fine, and the connections on the gameboy port are correct..

So anyway, I followed the schedule from here:
http://code.google.com/p/arduinoboy/
And added the extra 4.7 k on the opto for better results.

The drawing is a bit confusing for the midi ports, I'm not sure what way they are facing there, If i take the midi out port (not the cable part) is the drawing looking at the front, or the back of it?

Anyway, tried it both ways.. even tried to put on the optocoupler backwards, in case i misinterpreted what pin 1 was...
but nothing happens..

My guess is that at least the lights should flicker when recieving midi notes? (like it does on midi out)
Is there anything else i might have gotten wrong?

is there any way i can test what went wrong? Or maybe a simple schematic to see if the opto is actually working?

I don't have a drumcomputer or midi from my pc to test if i can sync lsdj, I only have a FB-01 synth and a Roland digital piano with midi.
the cables work, but i just can't get mgb to recieve anything...

sorry for the long post, but i can't figure out what's wrong

Go to forum: Nintendo Handhelds Go to post 893