Desktop application demo-super market management system

EasyCart Mobile App

RFID set up

Nodemcu -sd card -mqtt  connection

First video is about the physical connection  of the setup of nodemcu- sd card.

Second video is about the app requesting current bill on the cart through mqtt broker.

3rd video is about writing bill of the customer to sd card  after finished shopping

Testings done for laser sensor

1.  Compatibilty test with small component 

Checked with some small items across the laser beam. Checking that is laser beam considerable interrupt happens.We checked ldr sensor input value when small items crossed laser beam. We observed that it is considerable value.

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2. light condition testing.

This test done to check that will the expected result of the laser beam interruption change with the varying light condition of the supermarket where cart will be in . Here we check about how the outer(environment ) light conditions effect on ldr input value .It is observed that the if we cover the ldr properly only to get the laser beam on it , There is no big difference in  ldr input values.

light condition :medium (not under direct light)

light condition :Low 

light condition :High ( under direct light)