Failed to find any MIDIsense Boards

Posts about MIDIsense. open source MIDI sensor platform

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soapdodger
 
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Failed to find any MIDIsense Boards

Post by soapdodger »

Ok, I've built the board and get the green led flashing ok.

if i turn off the board and connect midi then switch on the led flashes red twice then goes off.

if i turn on the board then connect midi the green light stays flashing. when I try to connect to the board to calibrate the led flashes briefly red twice then goes back to green flashing. I understand this shows that the board is receiving.

the software then reports that it failed to find any boards.

I've checked all my joints and am sure there is no problem with the midi side of things as I use my edirol Ua101's midi every day with no problems.

any idea what might be wrong? does this mean that the board is receiving but not transmitting?

soapdodger
 
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Joined: Mon Oct 29, 2007 4:45 pm

Post by soapdodger »

ok, ive tried another midi interface and the green light keeps flashing even when the board is switched on and off (before the light would flash red twice and go out)

im still unable to connect, could there be a problem with the optoisolator?

adafruit
 
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Joined: Thu Apr 06, 2006 4:21 pm

Post by adafruit »

id use a midi snooper like midiOX (win) or midi monitor (mac)

watch to see if you see data arriving from the midisense. the optoisolator is only for receiving. so as long as you get a red light on the midisense that means the optoisolator is probably ok...

soapdodger
 
Posts: 22
Joined: Mon Oct 29, 2007 4:45 pm

Post by soapdodger »

thanks for the reply, im getting no output showing on midiox.

the board is giving 2 brief flashes in time with the midi output indicator on my interface. so i presume the input side is fine.

adafruit
 
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Post by adafruit »

are you sure you have midiox setup correctly? (try testing with something else that you know does work)

are you sure you have the right cables plugged into the right midi jacks

does your midi device have an led that blinks when it receives data (the one i have does)

soapdodger
 
Posts: 22
Joined: Mon Oct 29, 2007 4:45 pm

Post by soapdodger »

Yeah ive connected my master keyboard to the input on the interface and get activity lights. I also get midi data showing in midiox.

still nothing from the midisense tho, so for some reason its not transmitting. I've reheated all the joints to make sure there are no dry ones. The only thing I havent done is test the resistors with a meter. Will try this later.

adafruit
 
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Post by adafruit »

hmmm so the green light is blinking but nothing comes out? that -is- very strange. maybe post a photo of the top and bottom of your kit? i will look at it :(

soapdodger
 
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Post by soapdodger »

Heres the pic's



Image

Image

adafruit
 
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Post by adafruit »

umm

see that one pin thats not soldered in on the microcontroller socket?

soapdodger
 
Posts: 22
Joined: Mon Oct 29, 2007 4:45 pm

Post by soapdodger »

ah, the socket doesnt have a pin there thought it was meant to be like that!

Doh! will get a new socket, thanks for your help!

BTW im developing controllers for ableton live performance and interactive inflatable sculptures, will keep you posted.

When are the other midisense boards coming out? really want to try proximity sensors.

adafruit
 
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Post by adafruit »

pcbs arrived today :)

skelo
 
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Post by skelo »

:D

adafruit
 
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Post by adafruit »

soapdodger wrote: Doh! will get a new socket, thanks for your help!
once thing you can do 'for now' is solder a wire up through the hole to the chip and wedge it against the pin. sucks that the socket was broken. i can send a new one but its probably easy to do a quick fix than remove all 27 pins of the socket w/o damaging the PCB

soapdodger
 
Posts: 22
Joined: Mon Oct 29, 2007 4:45 pm

Post by soapdodger »

i used a pin from another socket, saved having to desolder,

works great now! thanks for your time.

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