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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
user157904
@fanoush
HC-05 cannot do BLE and MDBT42Q cannot do classic bluetooth, either you replace HC05 with HM-10 or 11, JDY-08 or similar BLE to serial module and then use MDBT42Q directly to talk over BLE to it or you get another HC-05 that you connect to serial pins of Espruino device without using BLE and pair both HC-05 together
some info about HM-10 also here https://www.espruino.com/Bluetooth+BLE