4-digit 7-segment Led Clock With Manual Adjust & Alarm, Thermometer & Higrometer Using Arduino : For RTC clock I use DS1307 homemade module, but works without changes with DS3231 module. For thermometer and higrometer it use DHT11 sensor, but with a small change in sketch can be use DHT22 (AM2302) sensor. I use led display named LFD080AAG-103-…