Lecture
This lecture covers various types of sensors used in robotics and microcontroller applications, including contact sensors like push buttons and reed switches, proximity sensors like Hall effect and optical sensors, and light sensors such as LDRs. It also explains how to read sensor data using microcontrollers, with examples of code for light sensors and light-to-frequency converters. Additionally, it discusses position-sensitive devices, laser range finders, ultrasonic sensors, accelerometers, and environmental sensors for measuring temperature, humidity, wind, and rainfall. The lecture emphasizes the importance of sensors in diverse applications and their interfaces with microcontrollers.