Gravity: Analog Sound Level Meter _MAKE_SOLDER Power is supplied through VSYS

Power is supplied through VSYS meaning that you can use Pico Scroll Pack both on USB power and from external supplies (so long as they can supply 3V+) making it ideal for battery-powered projects

Low standby current: 1

check out the Beocreate 4-channel amplifier

The GPi case contains a bright and clear 2

Gravity: Analog Sound Level Meter _MAKE_SOLDER Power is supplied through VSYSThis is an Arduino compatible sound level meter(also known as decibel meter, noise meter). It uses instrument circuit and low noise microphone, which enable it to accurately measure the sound level of the surrounding environment. It can be applied to environmental noise testing, such as highway noise monitoring station, bedroom noise monitoring, etc. Nowadays, there are many kinds of sounds surrounding, some of which are really noisy. It is really