TLDR
A quick search of “Bluetooth Module” in Mouser provides me the following results. The RN4020 is a 1.8V — 3.6V device, meaning your microcontroller power must be within that range. Microchip developed their own called Microchip Low-energy Data Profile (MLDP) which in a nutshell is a private profile to ease the burden. The command you issue determines if a device becomes a peripheral or a central module. You should have a response from your central device like this:via the TL;DR App
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Written by lestherb | An Electronic Engineer Specialized in Embedded Systems Programming and Design
