3/13/2024 0 Comments App inventor qr code reader aia![]() ![]() The Central + Peripheral scenario is more like (but not exactly the same) as the classic connection.The Broadcaster does not normally know if anything is listening or not. With Broadcaster + Observer there isn’t a standard connection, the Broadcaster, usually some kind of sensor, sends out periodic signals (advertising packets) which the Observer listens for.There are 2 ways BLE devices can talk to each other Broadcaster + Observer, and, Central + Peripheral. In essence, BLE achieves its low power consumption by not being connected very often, unlike Bluetooth Classic which maintains a constant connection. For this, Bluetooth Classic is a better choice. It is not really designed for continuous connections and large amounts of data. ![]() BLE is designed for low energy applications and achieves this by using infrequent small packets of data. BLE works in a very different way to the earlier Bluetooth. This is a very brief introduction to BLE and no where near the whole story.īLE is not an upgrade to Bluetooth Classic, it is a different system with different intended uses. To use this guide you should be somewhat familiar with App Inventor, have a BLE enabled Android device, and of course have an Arduino and a HM-10.Įxample Project Part 1: Turn an LED on and off basicĮxample Project Part 2: Two-way control of an LEDĮxample Project Part 3: Making the control codes complexĮxample Project Part 4: Change how the codes are dealt withĮxample Project Part 5: 3 LEDs and 3 switches Warning: This is going to be a very long post. I also hope that this takes you beyond the usual starter guides that do not go past very basic information.Īlthough I am using an Arduino the principles will be the same for any other microprocessor or indeed for using the HM-10 on its own. Hopefully this guide will give you a good introduction to using the HM-10 with App Inventor 2. You can check the latest version of the BLE extension on the app inventor BLE page. Do not delete the old version, upload the new version and it will over write the older version. Download the latest version from the app inventer BLE extention download and replace the existing extension. Update: The BLE extension included with the examples is out of date and does not function fully any more. ![]()
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