About this:“The LilyPad MP3 Player’s headphone jack is safe for headphones, but don’t connect it to an external amplifier unless you’re using a battery to power the LilyPad. (The fine print is that if the audio ground is shorted to the power ground, the audio decoder chip will be damaged).”
- Why does this happen, and
- How can this be avoided or resolved?
- If there’s no workaround, would I run into the same problem using an UNO R3 and the VS1053 MP3 shield?
I’d like to use this in a non-clothing installation with powered speakers, but it’s a wash if it has to be battery powered to work.