ESP32 BLE + Android + Arduino IDE = AWESOME

Experience the power of the ESP32's Bluetooth Low Energy capabilities with Arduino IDE and build your own custom Android app to control it!

Timothy Woo

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Description

As we all know, the ESP32 is loaded with features and today we will unlock the secrets of BLE on the ESP32 with Arduino IDE and build a custom Android app to read sensor data and send commands to the ESP32!

Files

ESP32_BLE_Demo.apk This is the compiled APK file for Android which you can install directly on your Android device. application/vnd.android.package-archive - 2.67 MB - 12/19/2017 at 17:13		Download
ESP32_BLE_Demo.aia Thunkable native file. Import this into Thunkable to view and edit the app! - 155.96 kB - 12/19/2017 at 17:13		Download
ESP32_BLE_UART_Demo.ino Arduino sketch for controlling the ESP32 via Bluetooth. - 5.04 kB - 12/19/2017 at 17:12		Download

Components

1 × ESP32 Development Board Pretty much any ESP32 dev board should work but note that the LED pin number might differ!
1 × Micro USB cable Gotta program the board somehow, right?
1 × Android Device with BLE Make sure it has Bluetooth 4.0 or later!

Build Instructions

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1

Arduino IDE Setup

Follow these instructions for Windows or these instructions for Mac to get the ESP32 Arduino package installed.
2

Example Arduino Sketch

Open the attached Arduino sketch ("ESP32_BLE_UART_Demo.ino") and make sure you choose the right board (Tools / Board) and COM port after plugging in your ESP32 board with the USB cable. Upload the sketch to the board and open serial monitor.
3

Android App

Install the attached APK file on an Android device by emailing it or otherwise transferring it to your device. If you want to edit the app, go to Thunkable, set up and account, and import the .aia file that I've also attached.