mereyes
Australia
Asked
— Edited
Hey guys,
I'm using the MP3 Trigger instead of "soundboard" in my Wall-e & found that I need to constantly release the servos for sound to work properly (using ReleaseAll() in scripts). Sometimes I lose sound completely.
If I setup a test project with a servo & the MP3 Trigger, the servo will shake/wobble whenever I slide the volume control up/down on the MP3 Trigger. Releasing the servo allows the volume control to work properly, even though sometimes I lose sound when selecting tracks.
If I setup a test project with the MP3 Trigger only, all ok (never lose sound).
Anyone experiencing this issue?
When first opening my Wall-e project (modified the original Wall-e big example to use the MP3 Trigger instead of "soundboard), all tracks play fine by pressing the track butons in the MP3 Trigger window.
If I then run the "SayName" script (which also triggers the "init" script, Wall-e says his name & moves his arms, but then when I run the "dance" script, all the movements happen, but no sound.
Pressing the numbered track buttons in the MP3 Trigger window at this point will also do nothing until I turn everything off & start again.
Attach your project file here please
Attached file
mereyes_walle.EZB
Hi DJ,
Were you able to duplicate this issue?
Yes - I think it is power related. The mp3 trigger seems to stop responding when the servos are all moving. I think the voltage drops too low because the mp3 trigger isn't very stable sharing power. I think the drop-out resistance of the VR they are using is too high.
The datasheet says it will take up to 12v, i'd suggest power it off the Vin on the side connector.
You will eventually be able to solve this issue with the EZ-Power Expander from the upcoming EZ-Bit line. It will resolve this design issue with the MP3 Trigger - as well as power 6v servos