This guide shows how to use the HC-SR04 Ultrasonic Sensor with the STM32F411 Nucleo-64 board using only registers level with GPIO polling mode. The ultrasonic sensor uses sonar to determine the distance to an object. We’ll show you how to wire...
READ MORECharacter display LCD ares used in so many products we used daily. We can find them in Espresso machines, 3D printers, microwaves and printers and many other products. In this lesson we going to lean how to interface LCD’s to our...
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...
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 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 MOREThe Serial Peripheral Interface (SPI) is a bus interface found in many devices such as DAC,ADC, EEPROM etc. 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 MOREPWM 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 TCRT500 module is a reflective sensor module. It is made up of a phototransistor coupled with an infrared LED. It’s working principle is that, the infrared LED will illuminate and bounce its light off a surface at an angle which will...
READ MOREIn this lesson we are going to give a short revision of calculus. This will help to be able to picture backpropagation and gradient descent more easily in future lesson. You do not need to understand calculus to work with deep learning major of...
READ MOREAs you may know memory holds code and data for the CPU to process ,and the I/ O ports are used by the CPU to access input and output devices. In the microcontroller we have two types of I/ O. They are: a. General Purpose I/ O (GPIO): The GPIO...
READ MOREComputers transfer data in two ways: parallel and serial. In parallel data transfers, often eight or more lines (wire conductors) are used to transfer data to another device. In serial communication, the data is sent one bit at a time. In the...
READ MOREThe System tick timer is present in all arm cortex-m microcontrollers. Irrespective of whether it is STM32,LPC, Tiva C etc. The System tick timer allows the system to initiate an action on a periodic basis. This action is performed internally at...
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