hc-05 ________________ Arduino
Vcc - - - - - - - - - - - - - - - - - - - 5V
Gnd - - - - - - - - - - - - - - - - - -GND
Tx - - - - - - - - - .- - - - - - - - - -Rx0
Rx ----------1Kohm---------------- Tx0
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2Kohm
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GND
Config AT Comand
AT+ORGL
AT+ROLE=0
AT+UART=115200,0,0
AT+INIT
WINDOWS COM BLUETOOTH CONFIG 115000
Paired hc-05
mBLOCK conect com lower value (4 and 5) conect 4.
Lucky
Edit
sometimes when not connected to the com port is skech it remains corrupt and the object must be saved to a file , make a new file and import the object into a new skecht and reconnect