Say, you’re starting your electronics journey with a few projects in mind. You have an ESP8266 board like the Wemos D1, a Li-Ion battery, you want to build a small battery-powered sensor that… ...

This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close proximity sensor. As you can ...

How long can you keep an Arduino circuit running on three AA batteries? With careful design, [educ8s] built a temperature sensor that lasts well over a year on a single charge of three 2250 mAH rec… ...

Born from Johan Kanflo's mind, the AAduino, so named because of its size, can, almost, conveniently fit inside a 3x AA battery holder for maximum space footprint efficiency. Advertisement ...

What do you do if even the smallest Arduino boards (or their clones) are too big for your homebrew project? If you're Johan Kanflo, you find a way to make them even smaller. His AAduino project ...

It will also prepare the user on how to successfully hook the Velostat up to an Arduino and how to code for it. This module can be used from K-6. Materials not included in Arduino kit: Velostat ; ...

The EnergyShield Arduino rechargeable battery has been created by Nightshade Electronics and has three main internal functions including a circuit to boost the battery’s nominal voltage of 3.7V ...

Behind the delightfully punny name, you'll find an Arduino-compatible board the size of an AA battery. The hardware tinkerers and prototype mavens out there will invariably have stumbled across ...

The Arduino board can be powered from a standard 9V battery pack, as usual. Parts Needed. Arduino Uno Board; 100K Resistor; 10K Resistor; 100R Resistor; 10K Preset Pot; 16×2 Parallel LCD ( Hitachi ...