NodeMCU 3V3 to HM-10 VCC
NodeMCU GND to HM-10 GND
NodeMCU D5 to HM-10 TX
NodeMCU D6 to HM-10 RX
Arduino Bluetooth Controller (HM-10 Module)
https://play.google.com/store/apps/details?id=com.argonremote.bluetoothcontroller&hl=en
https://www.instructables.com/id/ESP8266-HM-10-IBeacon-Proximity/
https://gist.github.com/karesztrk/a2e479d69985a7e9e4f8c6ba0f765ede