eld 311

Build a prototype Arduino UNO-based alarm clock, which should also display temperature and humidity values. It will be a standalone gadget powered by a 9 volt battery or AC adapter. A connection to the computer will only be required to update the firmware. Time information will remain saved even if the external power becomes unavailable.

All the components and modules required to build it are available in the kit. Only the 9V battery (holder is part of the kit) or an AC adapter will be required to be purchased for the final demonstration and continued standalone use.

The following modules and components will be used:

Arduino UNO board

1602 LCD display

DS3231 I2C real time clock

DHT11 temperature and humidity sensor

Piezo buzzer

9V battery connector and jack

LEDs, pushbuttons, resistors, wires, and so forth, as required