HC-42 6pin Bluetooth 5.0BLE Serial Port Module Servo Motor Pan-Tilt Setup verify your MacBook model size

verify your MacBook model size matches the 13

Ensure proper nozzle temperature (220-250 degreesC)

In standby mode

equipment testing

HC-42 6pin Bluetooth 5.0BLE Serial Port Module Servo Motor Pan-Tilt Setup verify your MacBook model sizeHC 42 6pin Bluetooth 5. 0BLE Serial Port Module The HC 42 is a compact 6 pin Bluetooth 5. 0 BLE serial port module designed for wireless communication between microcontrollers and host devices with minimal power consumption. Professional embedded systems engineers, IoT developers, and industrial automation technicians use this module to eliminate wired serial connections while maintaining reliable data transmission over distances up to 100 meters.