Search results for: 'button cell battery'

Super common in random devices around the house.

CR1220 Lithium metal 3V 38mAh button cell battery.

Sure, your flashing, chip-tune playing T-shirt is really cool at the party… but at some point you need to turn it off. And yes, you could just pull the battery, or maybe you’ve even sewn a LilyPad slide switch in-line. Wouldn’t it be nice if there was just a switch on the battery? Well, look no further.

These batteries are super popular in small electronic objects - and now you don't have to toss it out when the battery dies. This product comes with a ten pack of non-rechargeable LR44 button cell batteries.

Digital calipers are an absolute essential. Here at SparkFun we use them all the time. These premium calipers come with an extra battery and auto shut-off. Measurements can be taken in either metric or standard. The calipers are 6" in length and make a great addition to any tool set.

The RTC module is specifically designed for Raspberry Pi. It communicated with Raspberry Pi through I2C bus. There is a Maxim DS1307 and CR1220 button...

The SparkFun MicroMod Data Logging Board offers a highly customizable, low-power data logging platform using the MicroMod system allowing you to choose your own...

The SparkFun IN100 NanoBeacon Lite Board offers a 2.4 GHz wireless low energy BT beacon breakout with exceptional low power consumption features...

The real-time clock RTC breakout module employs the SD3031 chip with an integrated crystal oscillator and temperature compensator and a built-in 70-byte...

This Mini Blinking PCB Rocket DIY kit features a rocket-shaped red PCB and includes all parts for assembly: ATtiny microcontroller, 3V CR1632 battery,...

This SHIM provides a convenient way of powering your Raspberry Pi Pico from a LiPo/LiIon battery. You can recharge the battery easily by providing power to the Pico's USB port.

This real-time clock module (RTC) uses the DS3231 chip that integrates a crystal resonator and a temperature compensator, which improves the long-term accuracy of...

This smart SMD tester is essentially a pair of multimeter tweezers. This allows you to troubleshoot circuits with small SMD parts without having to fumble with large probes or long wires. Test resistors, capacitors and diodes one-handed!

Ever wanted a simple way of activating your robot from across the room? We designed this remote controller to be as simple, small, and affordable so that for the majority of the projects you've built, you will no longer need to move constantly to swtich it on/off.

This RTC module is specifically designed for the Raspberry Pi. It communicates with Raspberry Pi through I2C bus and includes a Maxim DS1307 on the board to keep a real time clock for a long time after the Pi has powered down. Just set a serial port, and you have a convenient way of online debugging using TTL. Supports Raspberry Pi B/A+/B+/2 model B/3 model B.

The Fermion: BLE Sensor Beacon has a built-in 11-bit ADC, Fermion version, and multiple I/Os that can be multiplexed to SDA/SCL while broadcasting over...

The MI:power board for the BBC micro:bit is a stylish way to power your BBC micro:bit from a 3V coin cell. A piezo buzzer is built in and a battery is included.

The Pico-RTC-DS3231 is a RTC expansion module specialized for Raspberry Pi Pico. It incorporates high precision RTC chip DS3231 and uses I2C bus for communication. More external sensors are allowed to be connected thanks to the stackable design.

Use this motor driver and power distribution board to get your Romi chassis running quickly. It offers all of the same features as the smaller Power...

The Adafruit Proto Doubler PiCowBell is intended to be treated like a mini solder-less proto plate to simplify programming and sensor connectivity for...

Are you still looking for a low cost thermometer? Did you get one? Aha! Here it is! This is a new waterproof digital thermometer with display. It is suitable for greenhouse, fish tank, swimming pool and other application scenarios which require temperature measurement. It is completely waterproof to a depth of one meter for long time. And it can continuously work for half the year with only 2 AG13 button cell.

Add smart light and sound effects to models and dioramas with this small-but-mighty RP2040-powered programmable controller board - now with wireless...

If you have one of our etched glow-through keycaps, this adorable, bite-sized Key Switch Keychain is the perfect accessory to show it off. It's...

A wireless outdoor air quality monitoring board with environmental and particulate sensors and a microphone...

Simplifying Projects with Raspberry Pi Pico Small but Mighty Love the Maker Pi Pico but can't fit it into your project? Now we have the Maker Pi Pico...

Simplifying Projects with Raspberry Pi Pico Small but Mighty Love the Maker Pi Pico but can't fit it into your project? Now we have the Maker Pi Pico...

This is 5V/2A charge-discharge integrated module with battery protection can boost 3.7V/4.2V lithium batteries to 5V....

The Adafruit Proto Tripler PiCowBell is intended to be treated like a mini solder-less proto plate to simplify programming and sensor or display...

This kit has 2 games in 1: A memory game and a reaction game. Both games are available from the pre-programmed PIC controller when the kit has been built.

The SparkFun Digi XBee® Dev Board breaks out all the functionality of your Digi XBee module, with the ability to connect to a cellular network and GNSS!...

This tiny coin cell battery holder is ideal for small portable or wearable projects. It holds one 20mm coin cell (CR2032 is the most popular size) to generate 3V nominal. 20mm coin cells are popular as they are used in keychain lights and remotes and other small topys, so they are easy to get and fairly low cost. And speaking of lights, these battery holder includes three "LED" modes: quick flashing, slower flickering, and static on. Press the button to cycle through the modes. Although designed for LED jewelry, it could be used for other projects that need simple cycling.

Designed for Jetson Nano Developer Kit, this advanced uninterruptible Power supply UPS module provides up to 5.1V 8000mA backup power for the Jetson Nano board...

This board is designed to be a thin, bluetooth-enabled driver board for our Adafruit LED Glasses RGB LED matrix. That said, it's a perfectly good...

A hackable, programmable badge with E Ink® display, powered by Raspberry Pi RP2040...

The Raspberry Pi is a great low cost computer with thousands of different uses but one thing it does not come with is a real-time clock. This means that every time you switch off your Raspberry Pi it forgets what the time is and you have to manually set it again next time you switch your Raspberry Pi on.