Modulos Real Time Clock
Velleman KA07 RTC Shield for Arduino® Add a real-time clock to your project and get an easy and accurate time measurement. While the map is measuring time and date, the controller performs other tasks.
PCF8563 RTC Board The PCF8563 RTC Board provides the real-time clock/calendar function, which can be driven by a battery on board and works independently even when the MCU is turned off.
DS1302 RTC Board
DS3231 RTC Module This is a real time clock module based on DS3231, it has small size, low-cost and extremely high accurate I2C bus real-time clock.
DS3231 RTC com cabo Módulo RTC DS3231 AT24C32 I2C Relógio Digital de Precisão. O Relógio Digital DS3231 é um relógio de tempo real de alta precisão e de baixo consumo de energia.
Funduino RTC With the Arduino compatible DS1307 I2C Real Time Clock the date and time can be displayed.
Adalogger FeatherWing - RTC + SD Add-on For All Feather Boards A Feather board without ambition is a Feather board without FeatherWings! This is the Adalogger FeatherWing: it adds both a battery-backed Real Time Clock and micro SD card storage to any Feather main board.
Adafruit DS3231 Precision RTC Breakout The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it says on the tin!
SainSmart I2C RTC DS1307 AT24C32 Real Time Clock Module Board for Arduino AVR ARM PIC This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost.
Adafruit RGB Matrix HAT + RTC for Raspberry Pi - Mini Kit You can now create a dazzling display with your Raspberry Pi Model A+/B+/Pi 2 with the Adafruit RGB Matrix HAT. This HAT plugs into your Pi and makes it super easy to control RGB matrices such as those we stock in the shop and create a colorful scrolling display or mini LED wall with ease.
PiFace Shim RTC SHIM RTC is a battery backed up realtime clock and calendar add on board for Raspberry Pi that does not get in the way of other add on boards providing easy, plug and play integration and development for designs and/or applications requiring time stamps.