
Xuven

Is there anyway to make the sparkfun mp3 trigger play WHILE a servo or servos move? It seems when I play a track and move a servo, the mp3 trigger stops and then refuses to play again for a few seconds. Another weird thing I cant seem to figure out is. The board will play fine for a couple tracks. Then suddenly refuse to play but will attempt to move another servo on the board. The light on the trigger comes on when it does this and i have to power it off to get it to work again
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Tech.
It may depend on the model of the MP3 trigger but most are Serial. How are you controlling the trigger? With the MP3 trigger control or with EZ-Script? It may be an incompatible board with the control, which looks like it works but in reality it's just luck that it shares some of the same commands.
Do you have the datasheet for the trigger? Or the model number, i.e. WIG-11029
Also, have you updated to the latest version of ARC and upgraded the EZ-B V3 firmware to the latest OS?
If it's serial, what Baud Rate is being used?
What power supply are you using? Quantity of batteries, type of batteries, voltages and capacity. Is it charged? What else is running from the batteries? What servos are they? Some servos can draw too much current which may cause the EZ-B to brown out even if you have the worlds best batteries attached.
I am using the sparkfun WIG-11029. I have it on digital port d2 and the rest of my servos on d7 and up ( Just 3 MG995 servos ) on the EZ B. I also have 2 6v led lights. Also have a H bridge. All this is running of brand new Duracel AA batteries ( tested with a volt meter ). The trigger is running on the default baud rate ( 38400 ) I am running the 2nd to last firmware , havent updated yet. Running the lastest ARC and tested on Windows 8.1 and Windows 7. When testing I just have the single servo and mp3 running. No leds and not moving any other servos.
The video you posted is set for private. You can set it for unlisted and it'll work on here
Power the servos (the Vcc) direct from the battery (if the battery is no more than 6V)
Along with a later explanation including some photos
I run it from a 5A 6V regulator and power two MG995s from that (3 circuits total).
If your battery is 6V (I have read MG995s can take 7.3v+ but I've not been brave enough to test it out) then you wont need a regulator.
If you run the servos from their own battery just make sure you give it a common ground (i.e. join all grounds together).
Unfortunately I have no time at the moment, I should have been in bed half an hour ago as it is. I may have time Monday if you need a better explanation however hopefully the above is clear enough. I have described what I did with Melvin in Melvin's topic, it's around page 16, 17, 18, somewhere around there anyway.
@Chrisb66, it may work better if you powered the servos externally rather than the MP3 Trigger, if you were looking to make any improvements. If it works fine as is and you are happy then why fix what isn't broken, but if you are looking to improve it in the future that's the path I would take personally.
Glad to be of help