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ChipMusic.org / Forums / Posts by catskull
So I built another one using a breadboard and an Arduino Max 2560 and I get the same results - nothing. I'm wondering if My midi gear isn't cut out for an arduinoboy? Has anyone successfully used a rockband keytar with an arduinoboy?
At this point I'd even be willing to ship it to someone who has known good midi gear to test for me.
That actually looks super cool!
I wouldn't be surprised if this was just painted over the "gold gameboy" from yesteryear.
I'm fairly certain that Josh-Schmosh AKA PianoGameboy made this.
The pro micro is the 5v version.
Pin 7 is the base of the second transistor in the opto. I don't understand fully, but it makes the rise/fall time of the opto smaller. Adding the resistor there is suggested by Nitro2k01. http://blog.gg8.se/wordpress/2009/07/26 … -glitches/
I'm using an Arduino Pro Micro. I did have to modify the code a bit because the pro micro doesn't have I/O's 11, 12, and 13 but instead it has 16, 14, 15 where they should be (compared to a pro mini). I'm sure that those led's are working though, because the startup sequence works correctly and I can cycle through the led's with no problem.
Did the opto circuit look okay to you?
Thanks a ton for your help btw. I really appreciate it!
Thinking about this a little bit more, I suspect the 6n138 is having problems (among other things). Again, it doesn't make sense to me that midi out doesn't work either, but maybe there's more than one issue at play.
If I understand correctly, I should NOT be able to program the arduino when it's in any mode other than programmer (with all leds on). However, I am able to program it regardless of which mode I'm in. If I understand the code and schematic correctly, the 6n138 vcc is tied to arduino I/O pin 4 so we can control the power on the fly. I suspect that the opto is not getting power correctly. I will attempt to connect 6n138's vcc directly to the arduino's vcc and see if I get any better results from that.
Other than that, I am at a bit of a loss here. Help me Jazzmarazz, you're my only hope!
Love it!
How is your optocoupler wired up?
Like this:
Even if the optocoupler wasn't wired correctly, wouldn't midi out still work?
Sorry to necrobump this thread, but I'm having the exact same problems as OP with the arduinoboy I just built. The leds run through the startup sequence just fine and I can switch modes with the pushbutton, but no matter what I do I cannot get any midi activity in or out. The status led does not blink when I send the aboy midi notes. I'm trying it with both my rockband midi keytar as well as one of those cheapie usb->midi cables. Both of those methods of midi output work fine with my FB-01.
Anyone have any ideas? I'd love to be able to get this puppy working.
Star Versus rules
Totally awesome! I particularly like how all of your demos do something cool with the nintendo logo. Does anyone know if any games had cool effects like that? I mean how cool would it be if Mario ran and jumped off the nintendo logo or something?
Also, how did you do the music for this? Carillon Editor?
I would suggest hosting the code on github. Not only is it a great (and free) code host, it has a lot of features that are great for open source projects.
Catskull, my work gateway won't allow me access to most social areas of the internet (including your link above). Unfortunately the best time for development discussion is during my work hours...
Oh, no problem. Just thought I'd throw that in there!
With the rate at which development talk happens would it be worth it to try and move the conversation to another channel? Gitter is an irc like web based chat system that's free to use and integrates with github well. I've created a chat room here: https://gitter.im/catskull/GB303
Simple project landing site is up at http://catskull.net/GB303 (hosted on github pages). If everyone hates it I'll take it down. I just thought it could be easier for people than digging through a huge thread and downloading a zip.
ChipMusic.org / Forums / Posts by catskull