Tag: CR2032

Ricoh Electronic Devices Company RIOT-001 Environment Sensing Board is designed to transmit data obtained from a temperature/humidity/pressure sensor (BME280) and an ambient light sensor (MAX44009) via Bluetooth, to tablets or other smart devices. The board also includes a voltage...

This simple digital watch is inspired by the Eiriks Binary Wrist Watch from Sverd Industries! Check it out if you didn't already. by Marijo Blažević Watch uses the same microcontroller as one on Arduino UNO - super hackable and easy to use! In this tutorial, I'll be showing how you...

This versatile charger has been designed to charge Lithium Coin Cell Rechargeable CR2016/CR2025/CR2032 Coin Batteries. Just insert the battery to the holder, and plug in to any USB port to recharge, D3 Power LED, D1 LED indicates the charge cycle. The board has been designed to use dual...

Witty Pi 3 is the third generation of Witty Pi, and it is a descendant of Witty Pi 2. UUGear, popular for its add-on boards, has launched a new version of their Witty Pi board for the Raspberry Pi. According to the company, the Witty Pi 3 incorporates an RTC and power management...

This is a small battery-powered thermometer that displays the temperature as a series of red and green flashes on an LED. by David Johnson-Davies: The thermometer consists of an ATtiny10, a DS18B20 1-wire temperature sensor, and a bi-colour LED. To avoid the need for a digital display,...

 Mike Harrison has build what he claims the "world’s smallest” led blinky. Likely it is based on the CPH3225A supercapacitor giving the blinky a footprint of 3.2 x 2.5 mm. With that in hand he added a PIC 10f322 microcontroller in a SOT23 package, an 0603 smoothing capacitor, and...

An ultra low power LoRa sensor node powered by just one CR2032 batter. By Harm Wouter Snippe: Do you want to measure temperature, connect a soil humidity sensor in your vegetable garden or monitor the air quality at your street corner? With the Fennec Development Board you are able to...

Tinusaur is an Atmel ATtiny85 microcontroller board that comes in parts, as a kit, so you can solder it yourself and then program it. This small microcontroller board can run Arduino and its goal is to have a simple, cheap and quick-start platform for everyone interested in learning and...