Is it possible to power a 5v device through a sensor that uses a 3.3v battery?
This is probably the stupidest question but i'm a total noob at this. I have a sensor which is powered by a small 3v button battery and a small 5v microphone which needs to be connected to the sensor so that the noise data can be transmitted over bluetooth because the sensor has bluetooth. The mic is connected through GPIO pins on the sensor. So I'm wondering if I can power the two together if the only power supply is the 3v button battery and the microphone needs 5v. Also any possibility that I can power the mic through USB?Thanks all.
p.s. Round sensor shown in the picture below is MetawearCPRO, datasheet: https://mbientlab.com/docs/MetaWearCPSv0.5.pdf
ebay link for microphone: http://www.ebay.com.au/itm/172013968121?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT