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1  Forum 2005-2010 (read only) / Interfacing / Re: works: MIDI-IN: code + schematics on: June 11, 2008, 02:55:12 am
nevermind!  Got it working, finally!

thanks for all the help.
2  Forum 2005-2010 (read only) / Interfacing / Re: works: MIDI-IN: code + schematics on: June 08, 2008, 04:30:35 pm
thanks kuk.

1) I did make sure midi communication was occuring over channel 1.
2) I'm not getting any serial data, so i'm not filtering at all right now.

I have a bunch of 4n28s but I'm not sure the best way to validate it is still working.  Any quick hints?
3  Forum 2005-2010 (read only) / Interfacing / Re: works: MIDI-IN: code + schematics on: June 07, 2008, 09:56:07 am
hello everyone,  first time posting in these forums so hopefully I won't ask to many silly questions smiley-wink

I've been trying to get kuk's midi input circuit going but I'm having problems, and the most frustrating thing is that it's unclear to me how to debug this.  I'm a novice at this stuff, and I'm trying to use midi input with the arduino for an art project / interactive music installation so any guidance would be greatly appreciated.

As of right now, I'm never getting Serial.Available on the RX input pin (using digtial pin 0).

Some of the steps I've tried:
1) I've verified my input pin works using a simple potentiometer.  I can get Serial.Available to read an input byte with that set-up
2) I've tried both midi plug wiring options as described in this thread.
3) I've tried the circuit with and without the diode.

Now I had access to several 2W resistors.  These things are funny looking becuase they are so fat.  Is it possible these could be overbuilding the circuit and causing it to fail?

I do not have access to a scope, but I do have a multimeter.  Are there any obvious debugging points that I should try?  

Thanks for any help you guys can give,
ccgibson
4  Forum 2005-2010 (read only) / Interfacing / Re: Looking for good 6 pin connector options? on: January 16, 2010, 06:25:42 pm
ah.. those are great options.  Thanks digimike!
5  Forum 2005-2010 (read only) / Interfacing / Re: Looking for good 6 pin connector options? on: January 16, 2010, 05:30:58 pm
I need to deliver 6 pins to each strip, so in that case I'd need 2 XLR connectors at each strip end.

power, ground, data, pulse, latch, clock

-chad
6  Forum 2005-2010 (read only) / Interfacing / Looking for good 6 pin connector options? on: January 16, 2010, 05:23:01 pm
Hello, I've recently completed an arduino based LED project based upon a set of 5m LED strips with inline HL1606 chips.  This basically gives me serial control of a strip of LEDs.  

Now, my first version basically had my Arduino driving 4 independent strips, and I used the smaller molex (.062) connectors and I had a bad experience with them -- I don't think they are at all the right connector for the job.

Each strip basically has a ~30ft cable with 2 16 gauge power lines (running ~5V, 2A) and then I use a regular CAT3 cable for the 4 data lines (pulse, data, clock, latch).

So for each strip I'll need 4 connectors (arduino housing, cable end, cable end, strip end).   A friend of mine suggested 7 pin XLR cables (like the kind used for tube microphones) and I thought that was a good suggestion.  This project is mainly used for lighting bands at concerts, so I'd like something that is fairly durable.  

Any suggestions?   I get quite overwhelmed when paging through the connector options at digikey, jameco, etc, etc.

thx,
-chad
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