Review on DSD TECH HM-19 Bluetooth 5.0 BLE CC2640R2F Module - Ideal for DIY and DIY Projects by Jay Hill
Easy to connect and use.
The instructions included made the installation very easy. I connected it to an Arduino Leonardo, copied a simple example from the internet, downloaded the iOS app and everything worked great. I was able to turn the LED on and off remotely using my iPhone 10XS.
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