Standby power Audio FX Sound Board + 2x2W Amp

[aaronzandman]

Adafruit Audio FX Sound Board + 2x2W Amp - WAV/OGG Trigger -16MB
Product ID: 2217

Can anyone advise what the power draw is when the device is not actively playing audio, standby time

Additionally , how can I determine the power draw when connected to a single 4ohm speaker , trying to calculate how long a 3.7v 500mah lipo will last

Thank you

[mikeysklar]

The Audio FX board draws about 40mA when running with ear buds.

The guide mentions 1A spikes are possible when running two 4 ohm speakers on the 2W board.

A 500mA battery would be a minimal setup. This size battery would only make sense if the board is rarely playing audio.

It would be best to measure rather than guess at your draw. A USB voltage meter is ideal for that.

[aaronzandman]

What is the draw when not actively playing sound ,

[mikeysklar]

20mA when not playing on the Audio FX Sound Board (no amp).