Key Arrangement There is a lot of material to cover so I will jump straight to the point. Here are some key points on working with keyboards: Keys on a keyboard are organized in a matrix of rows and columns The microcontroller accesses both...
READ MOREThis lesson is a continuation of the previous lesson – Counting events . In that lesson we saw how we can the occurrence of events by capturing the edges of an input pin. We said the microcontroller can detect the occurrence of an...
READ MORETimers are usually used for three kinds of tasks; creating delays, counting events and measuring the time between events. For example: Counting the number of people passing through airport security Measuring the time a sports car...
READ MOREThe HC-SR04 Ultrasonic sensor is a very popular low cost ultrasonics sensor used for non-contact distance measurements. The module comes with a separate transmitter and receiver. To determine the distance of an obstacle in front of...
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