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.

Automate AC appliance control with Arduino UNO, DS3231 RTC, and a Relay Module. Effortlessly schedule on/off timings for a smarter, more efficient home. ... arduino logger arduino-sketch sdcard ...