Hi, I have a bluetooth module rated max at 3.3v, and an Arduino pro mini ATmega168, at 5v. When I power the bluetooth module through a resistor divider (1.2k +2.2k) I get around 1.68v only to the bluetooth module. Can somebody explain to my why this happens? Does anyone know how to power a 3.3v mod…

Powering bluetooth module from Arduino pro mini 5v

system November 17, 2012, 2:30pm 8

use red LEDs (1.7v drop) in parallel.

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