Review on DSD TECH HC-05 Bluetooth Serial Pass-through Module: Seamless Wireless Serial Communication with Arduino Button by Brian Trotter

Like the HM-10, this device is only really useful for transferring small amounts of data. It has basic scanning capabilities and can prove the existence of non-advertising devices (via AT-RNAME?), but won't give you an RSSI. You can't change the power level either, so it's not really possible to create a proximity-based app with this device unless your target is constantly in pairing mode. how to implement this function. Unfortunately, most people simply send data from one device to another and stop there. I have yet to learn how to use AT-SNIFF and related functions. Of course the main command is documented, but what does it do? What other commands are needed? Because it doesn't do anything and no one else has written about it. Unfortunately, I'm still looking for the right solution for my project. I want to trigger one action when my phone or watch enters a certain proximity and another when it leaves. Unfortunately HM-05 can only help me partially by constantly looping through the result of AT-RNAME on a hardcoded MAC.