I make: GADGETS

MCUVoltage measures the voltage supply (Vcc) of Arduino without extra components.

Supported board includes Uno, Leonardo, Mega as well as the ATtiny3224/3226/3227.

This library also supports oversampling and averaging. Hardware oversampling for the ATtiny3224/3226/3227 is also supported.

See more on Github.

MonteCarloPi is a library to benchmark Arduinos by estimating the value of pi. It uses the Monte Carlo method to estimate pi, and it works with both single core Arduino like the UNO as well as multi-core ones like ESP32.

Do note this method only estimates pi and will require a huge amount of good quality random numbers to give a good estimate. It is far from the most efficient method to estimate or calculate pi, but works well enough for the purpose of benchmarking.

See more on Github.

DailyStruggleButton is yet another Arduino library to debounce button (push tactile switch) and manage its events. Events supported include pressing, releasing, holding down, long pressing (hold button for x time) and multi-hitting (hit button x times in y time). For simplicity, there is only one callback function for all events, that passes an identifier as a parameter to indicate the event that just happened.

See more on Github.

SDConfigCommand streamlines reading settings from a config file on SD card.

SDConfigCommand can read standardised text files stored on a SD card, parse and tokenise them into commands and values. The library can also write over existing settings but it is currently slow to do so.

See more on Github.

SerialConfigCommand for Arduino allows user to set commands via the Serial Monitor easily. SerialConfigCommand can allow for commands with or without values to be set.

Example: "LED=255", "Lock=1", "Start". It is compatible with both Arduino String and C-string, making it accessible for novice users. The library checks the Serial buffer every x interval defined by the user, and parse the setting into commands and values.

See more on Github.

TimerEvent is a non-blocking alternative to the delay() function. It provides an easy way to trigger a callback function every set period of time and using multiple instances of this library enables your Arduino to multitask via time slicing.

TimerEvent is based on TimedAction 1.6 by Alexander Brevig (alexanderbrevig@gmail.com). It is updated to work with Arduino IDE 1.8.5 and above.

See more on Github.

People often question how a mask with filter openings larger than the size of the particles work. This sketch demonstrates how layers of large filter opening can still stop small particles. Do note, it is still possible for some particles to get through, similar to how most air filters are not 100% efficient. This does not simulate other filtering mechanism like Brownian motion and electrostatic charge.

Click here to play.