Interfacing with hardware

I made this switch library years ago when decent switch libraries didn't exist, and over the years it has become more and more extended. It is now the best out there according to people who have co...

Related articles Bluetooth Watt meter User Manual One button menu This menu works without an LCD display and only requires one button and one LED. But it still has as many options as an LCD ...

A LED bar graph is normally lit continuously. This is not useful for applications that need low energy consumption. That's why I made a LED bar graph that uses less energy. Instead of lit the LEDs ...

Nathan D. Holmes and Michael D. Petersen have made a combined library (Ard2499) for two devices: LTC2499 24-bit ADC 24AA025E48 EEPROM From this, I have distracted a separate 24-bit ADC libra...

GitHub You can download the software on GitHub. This library is almost ready but I didn't finish it completely because I switched to another fuel gauge IC with high-side current sensing the LTC29...

How to overwrite text to the Arduino ILI9341 display Adafruit has modified the library so that overwriting text works now, I haven't tested this yet. Notify me if it doesn't work. The Adafruit_IL...

Arduino heartbeat LED class library This class combines a heartbeat live indicator with a handy diagnostics tool. You can show errors by its own LED blinking code message.  Heartbeat show...

This article is about an old design from 2013, it is being replaced by the E-bike cable killer: E-bike cable killer The E-bike cable killer consists of two PCB's, the main PCB is built into the...

Using the Arduino as a In Circuit System Programmer (ISP) The great advantage of the Arduino is that it can be programmed easily through the serial USB interface, which is made possible by the boo...

MediaPlayer class With the Arduino Wave Shield you can play audio files, controlled by the Arduino. Arduino wave shield The Arduino Wave Shield is not easy to use and requires a lot of...

Contact problems Don't use the Nokia 5110 LCD anymore; I experienced contact problems and unstable brightness, so better take another LCD. LCD displays have a low power consumption and a good sunl...