Milk-Mail Indicator

Published Dec 12, 2020

8 hours to build

Beginner

TO automate post box by notifying with LED. When letter is in box LED will ON, if letter is taken out LED will off.

Components Used
Arduino Nano Arduino Nano	X 1
Breadboard Breadboard	X 1
LDR -Photocell Photoresistor LDR -Photocell, Photoresistor	X 1
LED 5mm LED 5mm	X 2
Resistor 1 kOhms Metal Film Resistors - Through Hole 1K ohm 1/4W 1%	X 2

Description

PROJECT OUTLINE:

Simple LDR circuit; use LDR and Arduino together to make milk mail indicator(aka LDR DRAK SENSOR).

A external light(LED1) that always fall on LDR when postmen/milkmen drops post or milk the light that falls on LDR gets disturbed.
And signal is send to Arduino board that process data and make another output LED to glow.
So that user/housemates gets notified to get letter/milk from Milk mail box