Backplane for HC-05 - HM-10

This backplane is intended to solder an HC-05, HC-06, HM-10 or comparable module.
This makes the RX, TX, STATE, EN pin easy to connect to the bluetooth module.  

This board only ensures that the voltage on the module is brought to 3.3V (from 5V eg). The signals go straight to the bluetooth module and therefore have the same voltage as the module itself (probably 3.3V)