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Power consumption is a critical issue for a device running continuously for a long time without being turned off. So to overcome this problem almost every controller comes with a…

Charlieplexing is a technique of controlling many LEDs using a few I/O pins. Charlieplexing is same as multiplexing, but it uses the tri-state logic (high, low input) to reduce the…

Solenoids are very commonly used actuators in many process automation systems. There are many types of solenoid, for instance, there are solenoid valves which can be used to open or close water…

A stepper motor is a type of DC motor that works in discrete steps and used everywhere from a surveillance camera to sophisticated robots and machines. Stepper motors provide accurate controlling, and can…

Designers use many wireless communication systems like Bluetooth Low Energy (BLE 4.0), Zigbee, ESP8266 Wi-Fi Modules, 433MHz RF Modules, Lora, nRF etc. And the selection of medium depends on the type of application it is being used…

Noise pollution has really started to gain importance due to high population density. A normal human ear could hear sound levels from 0dB to 140dB in which sound levels from 120dB…


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