If you have the a 317 do it your self with 2 resistors or one resistor and a trimmer.
Even cheaper and easier, a serial pass transistor with a bias to control the output.
Ioannis
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Re: Bluetooth module @ 3.3 volts
If you have the a 317 do it your self with 2 resistors or one resistor and a trimmer.
Even cheaper and easier, a serial pass transistor with a bias to control the output.
Ioannis
Re: Bluetooth module @ 3.3 volts
Do these module support audio too?
What class are they?
Ioannis
Re: Bluetooth module @ 3.3 volts
I would use a regulator for the 3.3 volts, since the drop on the LED will vary and also current on the module (Data?) may exceed the 20mA of the LEDs normal working.
About the interface lines,,...