A keypad is a set of buttons arranged in a block or "pad" which bear digits, symbols or alphabetical letters. Pads mostly containing numbers are called a numeric keypad. Numeric keypads are found on alphanumeric keyboards and on other devices which require mainly numeric input such as calculators, push-button telephones, vending machines, ATMs, Point of Sale devices, combination locks, and digital door locks. Many devices follow the E.161 standard for their arrangement.

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DIY Bluetooth Macro Keypad

DIY Bluetooth Macro Keypad

“In this Instructable we are going to take a look at using the built-in Bluetooth of the ESP32 to emulate a Bluetooth Keyboard. Bluetooth HID (Human Interface Device) is the protocol used by regular Bluetooth keyboard and mice and its …

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