The term wireless RF stands for “wireless Radio Frequency Technology”. If you are just starting with radios, this article can help. It is proposed to give a basic understanding of radio frequency,as well work as a quick reference for those who “know their knowledge” but may be observed to brush up on that one place that they never quite understood. Radio frequency is a measurement signifying the oscillation rate of electromagnetic radio waves or electromagnetic radiation spectrum of frequencies ranging from 300 GHz to 9 kHz. With the use of transmitters and antennas, the radio frequency field can be used for several types of wireless communications.
In this tutorial, we going to discuss how can we interface a microcontroller with the Bluetooth technology. The Bluetooth will work with an Arduino board through the serial communication. The data is received to the Arduino with the HC-05 Bluetooth module through the serial communication and the LED’s will turn ON/OFF according to the receiving data. There are different types of Bluetooth modules are available in the market, but here we are using the HC-05 Bluetooth module because it is commonly used.
In the world of digital embedded systems, the ARM Cortex is a most famous microcontroller. And most of the applications used in the industries choose only these microcontrollers. Since it comprises of vast features to implement products with an innovative appearance. The ARM processors are high performance and cost sensitive devices which are used in an extensive range of application like instrument control systems in industries, sensors, wireless networking and automotive body system etc.
The term ARM stands for “Advanced RISC machine” and it is a 32-bit RISC (reduced instructions set computer) microcontroller. In the year 1987, the first ARM processor was introduced by the “Acron Computers” organization.The ARM belongs to the microcontroller family developed by the different industrialists like Motorola, ST microelectronics, and so on. The architecture of ARM cortex come with a few different forms such as ARMv1, ARMv2 etc and each type of ARM has its own advantages and disadvantages.
The first Arduino board was developed in the “Ivrea Interaction Design Institute” proposed for any students those who doesn’t have an electronics background and also programming concepts. Arduino board started changing to adapt to new requirements and challenges, isolating its present from simple 8-bit boards for different applications such as 3D printing, IoT product (Internet of Things) applications, wearable, and embedded environs. All types of Arduino boards are completely open-source, letting users design them individually and finally adapt them to their particular requirements. Over the years these boards have been used to make Arduino-based projects, from daily things too complex scientific tools. An international community of Arduino designers, performers, programmers, students, hobbyists, and specialists has gotten organized around this open source stage, their contributions have added up to an incredible amount of accessible knowledge that can be of huge help to learners and experts alike.
In communication, the Bluetooth wireless technology has become very popular and it is one of the fastest growing fields in the wireless technology. Hence it is important to learn how the HC 05 Bluetooth module interfacing with the microcontroller. Nowadays, demands of mobile phones and personal communication the bandwidth are easy and convenient to use. The Bluetooth technology manages the communication channel of the wireless part. The Bluetooth modules can transmit and receives the data wirelessly by using two devices. The Bluetooth module can receive and transmits the data from a host system with the help of the host controller interface (HCI). The UART & USB are the most popular host controller interfaces and in this article, we have discussed the UART. By using the UART connections, the Bluetooth module can be integrated and it gives the best possible solutions for the Bluetooth embedded systems. [Read more…]