M5Stack has just launched the Cardputer Mesh Kit, a portable, card-sized Meshtastic communication terminal built around the ...

If you were to point to a single device responsible for much of Hackaday’s early success, it might be the Arduino Uno. The ...

A standard telephone keypad, with four rows of three keys each. The top row consists of 1, 2, and 3, with keys continuing down in order until the last row, which is usually *, 0, and #. Such a keypad ...

At times, it may happen that you are without a keyboard and a mouse and yet you’d like to use your Windows PC – or maybe your Keyboard or Mouse is not working. This article will tell you how you can ...

Tyler has worked on, lived with and tested all types of smart home and security technology for over a dozen years, explaining the latest features, privacy tricks, and top recommendations. With degrees ...

This library is to use an HC4067 multiplexer by means of a PCF8574 (I2C 8 channel IO). The HC4067 allows e.g one analog port read up to 16 different analog channels, or one digital port to read the ...

static const uint16_t LCD_INIT_LONG_DELAY_MS = 1000; static const uint16_t LCD_INIT_COMMAND_DELAY_US = 4500; static const uint8_t LCD_INIT_SHORT_DELAY_US = 150; static const uint16_t LCD_COMMAND_DELAY ...

Velxio is an open-source, self-hosted simulator for Arduino, ESP32, and Raspberry Pi boards that works directly in your web browser. You can drag-and-drop boards, connect components and modules, write ...

Keypad phones, believe it or not, are still in use, and there is a surprising amount of variety to choose from. Some of the phones include 4G connectivity, cameras, and are built to last. If you're ...