Hi, I bought on ebay a HC-05 module and it has 6 pins (VCC, GND, TXD, RXD, KEY and LED). It says that works with 3.3V but can take 4,5~6V from input. How can I be sure what is the voltage to connect to the VCC? And can I directly connect a TXD and RXD from the board to the module or do I need to lo…

HC-05 pins

Topic		Replies	Views
HC 05 Bluetooth module has 2 Vcc. Which to use? General Guidance	4	3596	May 5, 2021
HC-05 Bluetooth Module General Guidance	12	10673	May 5, 2021
HC-05 operating voltage Hardware	8	1327	May 7, 2021
Hc-05 5v 3,3v Hardware	3	2251	May 7, 2021
Help with hc 05 Bluetooth General Guidance	12	3001	May 5, 2021