What you will need:
Nodemcu 0.9/ 1 RX ==> RX / for Nodemcu 1 RX ==> TX TX ==> TX/ for Nodemcu 1 TX ==> RX 5v ==> Vcc Gnd ==> Gnd 3v ==> En Connect USB on Nodemcu to pc On arduino ide choose nodemcu port, upload "bare minimum sketch"
Open serial monitor on arduino ide Chnage baute rate to 38400 and type AT You should get "OK" You can find a list of at commands for HC 05 here: www.linotux.ch/arduino/HC-0305_serial_module_AT_commamd_set_201104_revised.pdf
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