All Products

SKU: AF-3296

The Adafruit DS1307 Real Time Clock breakout keeps accurate time even when your microcontroller loses power or is reprogrammed. This battery-backed I2C RTC is one of the most widely used clock chips, making it a reliable choice for datalogging, alarms, timers, and clock projects. The DS1307 requ...

SKU: AF-3295

Keep track of time even when your project loses power or gets reprogrammed. The PCF8523 Real Time Clock breakout is a battery-backed RTC that communicates over I2C and works with both 3.3 V and 5 V power and logic. Perfect for datalogging, clock building, time stamping, timers, and alarms. Works...

SKU: DF-DFR0151

The DS1307 Real Time Clock module developed by one of our designers: Waiman. The module comes fully assembled and pre-programmed with the current time (ok, so it's our current time - MST). The included Lithium coin cell battery (CR1225 41mAh) will run the module for a minimum of 9 years (17 ...

SKU: AF-1868

A simple breakout board with a CR1220 coin cell battery holder pre-soldered and broken out to 0.1″ pitch pins. Ideal for powering very low-current projects or providing battery backup for a real-time clock (RTC) module. Comes fully assembled and tested, with a stick of 0.1″ header included so yo...

SKU: AF-3386

The Adafruit PiRTC is a battery-backed real-time clock that plugs directly onto your Raspberry Pi's GPIO header, letting your Pi keep accurate time even when powered off. Built around the PCF8523 RTC with native Linux kernel support, it's ideal for data logging, time-stamping, alarms, and any pro...

SKU: DF-DFR0386

A real-time clock (RTC) module designed specifically for the Raspberry Pi, built around the Maxim DS1307 chip. It communicates via I2C and includes a CR1220 coin cell battery to maintain accurate timekeeping even when the Pi is powered down. The module plugs directly onto the Raspberry Pi GPIO he...

SKU: AF-5189

Keep track of time even when your project loses power or gets reprogrammed. This updated PCF8523 Real Time Clock breakout features STEMMA QT / Qwiic connectors for solderless I2C wiring, plus traditional breadboard headers. It works with both 3.3 V and 5 V power and logic, making it compatible wi...

SKU: SF-BOB-12708

This is the SparkFun Real Time Clock (RTC) Module, this little breakout that uses the DS1307 to keep track of the current year, month, day as well as the current time. The module comes fully assembled and includes a small CR1225 Lithium coin cell battery that will run the RTC for a minimum of 9 y...

SKU: AF-5703

The Adafruit PiCowbell Adalogger is a Pico-sized add-on board that sockets underneath your Raspberry Pi Pico or Pico W, adding a microSD card slot, real-time clock with battery backup, and a STEMMA QT connector for I2C sensors — everything you need for data logging projects. The PCF8523 RTC keep...

SKU: AF-2345

The Adafruit RGB Matrix HAT + RTC makes it easy to drive HUB75-type RGB LED matrices from your Raspberry Pi. This HAT plugs onto any Pi with a 40-pin GPIO header and includes a DS1307 real-time clock, so your Pi can keep accurate time even after reboots or power loss — perfect for clock and time-...

SKU: AF-1867

A breakout board with a CR1220 coin cell battery holder, an on/off switch, and 0.1″ pitch breakout pins. Ideal for powering very low-current projects or providing switchable battery backup for a real-time clock (RTC) module. The board breaks out four pins: two ground pins, one switched power pin...

SKU: TB-XC4450

This compact real-time clock (RTC) module keeps accurate time using a DS1307 RTC chip and a replaceable battery. With an onboard 24C32 32K EEPROM for data storage, it's a versatile addition to Arduino projects requiring date, time, and non-volatile memory — such as clocks, data loggers, and timer...

SKU: AF-1870

A simple sewable breakout board with a CR2032 coin cell battery holder pre-soldered on and 0.1" pitch breakout pins for easy connection. Ideal for powering very low-current projects or adding a battery backup circuit to a real-time clock or similar module. Key Features CR2032 Coin Cell Holder ...

SKU: AF-1141

The Adafruit Data Logging Shield makes it easy to save sensor data to an SD card with accurate timestamps. It combines an SD card interface with a real-time clock (RTC) and a prototyping area on an Arduino-compatible shield, so you can be logging data within minutes of setup. This R3-compatible ...

SKU: DF-DFR0998

This real-time clock (RTC) module uses the SD3031 chip, which has an integrated crystal oscillator and temperature compensator. This provides high-precision timing and stability. At a temperature of 25 °C, the accuracy is maintained at ±3.8ppm (±0.32832 seconds/day).The SD3031 can be powered by b...

SKU: AF-1871

A sewable breakout board with a CR2032 coin cell battery holder, built-in on/off switch, and 0.1" pitch breakout pins. The board provides two ground pins, one switched power pin, and one always-on power pin — giving you flexibility in how you manage power in your project. Also available: version...

SKU: AF-1932

A labelled breakout board for 40-pin dot-clock TFT displays with an integrated LED backlight driver. Breaks out all 40 FPC pins to breadboard-friendly through-hole pads and includes a FAN5333-based boost converter for driving backlight LED strings up to 24V. The backlight driver defaults to 25mA...

SKU: AF-255

THIS IS THE LATEST VERSION 2.1The ChronoDot RTC is an extremely accurate real time clock module, based on the DS3231 temperature compensated RTC (TCXO). It includes a CR1632 battery, which should last at least 8 years if the I2C interface is only used while the device has 5V power available. No e...

SKU: EC-CDE20032P

An Arduino Uno shield that makes it easy to drive a 16×32 RGB LED matrix panel with a HUB75 connector. Instead of wiring up 12 individual jumper wires, this shield provides a matching 2×8 IDC connector for a clean, reliable connection between your Arduino and the panel. The shield also includes ...

SKU: AF-4282

The Adafruit PiRTC Precise DS3231 is a high-accuracy, battery-backed real-time clock that plugs directly onto your Raspberry Pi's GPIO header. Built around a genuine Maxim DS3231 with an integrated temperature-compensated crystal oscillator (TCXO), it delivers exceptional timekeeping accuracy — f...