Arduino and Serial port bluetooth module (Master/Slave)


Is there some “for dummies” schematic how to connect this module to Arduino? I read that you need to add some parts to to connect 5V Arduino pins to 3.3V Bluetooth module. Could You tell me what parts and their values? I don’t want to damage the module. Can SeedStudio also add this info to datasheet? This would help many people.

Please help,

Hi Tom,

The Bluetooth module is originally designed working in 3.3v.(compatible with seeeduino :slight_smile: )
However Arduino is working in 5v, so they are not compatible.
Anyway I tried to make an level transform circuit (not tested yet :wink: )

[ away] [looking for Seeduino… Thx Icing]