After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.

Now let's see the detailed wiring connection used in the RFID attendance tracker system, starting from the Arduino UNO. Digital Pin 11 MFRC522 MOSI SPI Data Out SPI communication Digital Pin 12 ...

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Beijing has deployed nearly 16,000 5G-Advanced (5G-A) base stations and leads Chinese cities in 5G base station density per 10,000 people, municipal authorities said recently. Beijing will further ...

India is a vast nation with 28 states and at least 718 districts. In order to identify regions, Indian postal department has allotted a unique code known as Pin Code to each district/village/town to ...

An Arduino Uno (CH340G clone) reads temperature and humidity from a DHT11 sensor and computes 10+ environmental metrics (heat index, dew point, enthalpy, humidex, vapor pressures, etc.), outputting ...