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ESP32 as Bluetooth Keyboard

With its built-in Bluetooth capabilities, the ESP32 can act as a Bluetooth keyboard. The below code is a minimal example of how to achieve it. It will generate the key strokes for a message whenever a button attached to the ESP32 is pressed.

For the example setup, a momentary button should be connected to pin 2 and to ground. Pin 2 will be configured as an input with pull-up.

In order to receive the message, add the ESP32 as a Bluetooth keyboard of your computer or mobile phone:

1. Go to your computers/phones settings
2. Ensure Bluetooth is turned on

pamelafox

function sendError(message, url, lineNum) { 
    var i;

    // First check the URL and line number of the error
    url = url || window.location.href;
    lineNum = lineNum || 'None';

    // If the error is from these 3rd party script URLs, we ignore
    // We could also just ignore errors from all scripts that aren't our own
    var scriptURLs = [