HT9032D Module Arduino based caller ID unit to displays the telephone number and date/time sent by the telephone exchange. This project can be built using Arduino UNO, 16x2 character LCD, and  HT9032D base simple circuitry. 
More details are available at <a rel="nofollow" class="external free" href="http://jayakody2000lk.blogspot.com/2021/08/arduino-telephone-caller-id-unit.html">http://jayakody2000lk.blogspot.com/2021/08/arduino-telephone-caller-id-unit.html</a>
Dilshan Jayakody
CC BY-SA 2.0
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