Arduino Real Time Alarm Clock DS3231 with TM1638. Arduino Clock with Battery backup (real time clock), Time, Date, Alarm, Temperature, TM1638 seven segment module output and input, Display Sleep mode.

Absolute Encoders Provide a unique digital code for each shaft position ... I checked the encoder sensor and it was okay. I changed the encoder strip and the problem did not resolved.

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Take the small Sensor anywhere you go to monitor the Air Quality, with Battery life of 11+ days. With the SCD40, Sensirion offers a completely new miniaturized CO2 sensor based on the photoacoustic ...

This isn’t about connecting a temperature sensor in your Arduino. This build is about using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno ...

They also hint at doing something very clever with a magnetic encoder on the board which allows them, after a calibration routine, to get the accuracy they’ve promised.