HC-08 4pin Bluetooth Module without Button SIM800A LM317 with Antenna(GSM Finger)- ADIY then publish relay state changes

then publish relay state changes and subscribe to control topics for remote switching

and articulated mechanical structures that require reliable joint articulation with minimal play

and float charging modes

For memory-intensive tasks like image processing

HC-08 4pin Bluetooth Module without Button SIM800A LM317 with Antenna(GSM Finger)- ADIY then publish relay state changesHC 08 4pin Bluetooth Module without Button The HC 08 is a compact 4 pin Bluetooth Low Energy (BLE) module designed for wireless communication in embedded systems and IoT applications. Electronics engineers, IoT developers, and hobbyists use this module to add Bluetooth connectivity to microcontroller based projects without requiring complex wireless protocols. This module solves the challenge of establishing reliable short range wireless communication