Hey everyone. As many have already done, I’m trying to control a Hallmark Card that plays “Celebration” and has 3 button batteries which measure combined 4.5v.
I successfully disassembled the card and re-wired it so I can control from 4.5v with just two wires. Worth noting that the card also had 3 LED fiber optic lights, but I’m not using them and just cut those wires.
When I try to power from the Arduino (using a digital pin high), the speaker makes a constant skipping sound. It’s an older Arduino Yun, but I doubt that is relevant. My gut tells me it’s not getting enough current. Voltage out on Arduino measures the same as the 3 button cells.
Any thoughts?
Thanks,
John