PWM operates by creating a digital output wave of a fixed frequency while allowing varying duty cycle. This gives the microcontroller the capability to vary the amount of power delivered to a load such as a motor. The figure below shows three...
READ MOREThe Serial Peripheral Interface (SPI) is a bus interface found in many devices such as DAC,ADC, EEPROM etc. H SPI devices typically use two pin for data transfer. – SDI and SDO. The SPI bus has the SCLK (Serial Clock) pin to synchronize the data...
READ MORETo transfer data, computers adopt two method: serial and parallel. In serial communication data is sent a bit at a time (1 line)while in parallel communication 8 or more lines are often used to transfer data. The UART is a form of serial...
READ MORENormal Open Switches Normal – Open switches is the name given to the switches we are very much used to. The switches that turn on when we press and goes off when we release. These switches are called Normal-Open because in their normal...
READ MORENormal-Close basically means in the normal state of the switch i.e non-pressed state, the switch is a closed circuit.The circuit breaks when the switch is pressed. Assuming we connect a normally closed switch to an LED the way we usually...
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