hi , my project is Text files transferring through Bluetooth from a micro SD card to andriod mobile and
I have used Arduino pro mini AT328P 5 Volts 16 M Hz
I need to give the voltage of 3.3 volts for my Bluetooth module from Arduino pro mini (Arduino pro mini doesn’t have a 3.3 volts power supply pin)
I need a voltage regulator for converting 5 volts to 3.3 volts exactly , any circuite ?
1.Arduino promini powerd using FTDI1427 USB ( plese look at the attached: FTDI to Arduino Pro)
HC-05 BTBEE bluetooth module data sheet (attachment BTBEE)
I have tried LM317 voltage regulator my Bluetooh module got power( RED LED) up but status (GReen LED) is not blinking , this voltage regulator is producing 3 volts only ( attachment )
BTBEE-V1.0 datasheet.pdf (375 KB)