Knowledge in ELECTRONICS AND COMMUNICATION ENGINEERING
Yash Bhat
Analog circuits
It contains about feedback amplifiers and oscillators.
Lonewalker
Colour sensor, applications and its working
Here is the article on colour sensor that will help in interfacing sensor with arduino
Katkam Ashutosh
GAS SENSOR AND TYPES WITH APPLICATIONS
This article is aboutgas sensor and its applications.
Flex sensor and it uses with working principle
This article is on flex sensor and its applications with working
Passive infrared sensor and its applications
Itis a article on passive infrared sensor and its applications with its working principle.
Raspberry pi zero and its applications
This article is on Raspberry pi zero and its applications and interfacing
Data sheet on PIR sensor
This article is the complete data sheet of the passive infrared sensor and its pin out.
MQ 3 sensor and its working with applications
This article is on MQ3 sensor with applications and interfacing with arduino
Electrochemistry
This is article on electrochemistry and it is related to engineering chemistry.
Arduino introduction and interfacing
Arduino interfacing and its introduction to engineering devices.
TCS3200 colour sensor data sheet.
TCS3200 data sheet and its pinout with detailed explanation