Serial communication is a way for data transmission over long distances. Commonly associated with RS232 and TTLserial, it enables Arduino and other microcontrollers to communicate with your computer or other serial devices. Though technology has advanced and we currently have faster means of data transfer such as USB, serial communication is still widely seen and applicable in our lives.

How does Serial Communication work?

• Serial communicating first involves two serial devices, each having two serial pins;

·  The receiver, RX

·  The transmitter, TX

  Both devices are then wired by connecting wires from the master device’s TX to the listener’s RX line

  Devices communicate serially through signal methods, popular ones being- TTL serial, RS-232, RS 485.

Hardware Implementations of Serial Communication:-

1. RS232- RS-232 (Recommended Standard 232) telecommunications standard is the first serial communication protocol that is widely used as a communication method for computers and devices by serial ports. Similar to your microcontroller serial signals, it transmits data a bit at one time. In RS-232 standard a logic high ('1') is represented by a negative voltage – anywhere from -3 to -25V – while a logic low ('0') transmits a positive voltage that can be anywhere from +3 to +25V. 

RS232 works by connecting Data Transmission Equipment (DTE) and Data Communication Equipment (DCE), which has pins like TXD, RXD, and RTS&CTS.

·  TXD: Transmitter

·  RXD: Receiver

·  RTS: Request to Send

·  CTS: Clear to Send

·  GND: Ground

2.  TTL: UARTs transmit one bit at a time at a specified data rate (i.e. 9600bps, 115200bps, etc.). This method of serial communicationis referred as TTL serial (transistor-transistor logic). Serial communication at a TTL level will always remain between the limits of 0V and Vcc, which is often 5V or 3.3V. A logic high ('1') is represented by Vcc, while a logic low ('0') is 0V.

3.  RS485: The RS485 also known as TIA-485 (-A) or EIA-485 is a serial communication method for computers and devices similar to the RS232. RS485 allows multiple devices of up to 32 to communicate at a half-duplex on a single pair of wire plus a ground wire at distances up to 1200 meters. RS485is used commonly as a protocol for POS, industrial, telecom, and especially in noisy environments due to its wide common-mode range that enables data transmission over long cable lengths in noisy environments.

4.  USB: The Universal Serial Bus (USB) standard was developed to define communication protocols, including cables and connectors, between computers and electronic devices such as printers and scanners. As the number of devices multiplied in quantity and types, the USB port was adopted as the basic connection portal. USB 2.0 offers transfer rates of 480 Mbps, and USB 3.0 offers transfer rates of 4.8 Gbps — 10 times faster. USB 3.0 uses two unidirectional data paths, one to receive data and the other to transmit 

Serial interface Modules:

·  RS232 to TTL serial Interface Module- It usesMAX232IC for conversion. It can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU.

Buy:RS232 to TTL serial Interface Module

• USB TO TTL Module: It features Single-Chip USB to UART Data Transfer - Integrated USB transceiver. On-chip voltage regulator - 3.3 V output (CP2102) - 3.45 V output (CP2109) - 100% pin and software compatible with CP2101.

Buy: USB TO TTL Module

• USB TO RS485 Converter: The USB-RS485 module provides an easy to use RS485 interface by means of a Virtual Com Port on the user's system.

Buy: USB to RS485 converter

• MAX 485 to TTL Converter: This converter lets you send and receive data using the RS485 network from your Arduino/microcontroller.

Buy: MAX 485 to TTL Converter

• CP 2102 USB to Serial Converter Board: This is the CP2102 Breakout Board. This board provides RS232serial communication interface to computers with aUSB port.

Buy: CP 2102 USB to Serial Converter

Bluetooth wireless communication technology has become very popular and it is one of the fastest-growing fields in wireless technology. Nowadays, demands of mobile phones and personal communication the bandwidth is easy and convenient to use. The Bluetooth technology manages the communication channel of the wireless part. Based on the current market and the development trend of the Internet of Things in the future, versions of Bluetooth technology is classified into 2 types: classic and low-energy (LE). The classic Bluetooth assures the data transmission rate so that it is suitable for applications such as the Bluetooth headset transmitting high-quality music. In the classic type, it is subdivided into the basic rate (BR) and the enhanced data rate (EDR). The low-energy Bluetooth focuses more on the simple information transmission, which tries to extend the endurance time of electronics as long as possible.

 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.

How to Select a Bluetooth Module 

The Bluetooth module is a functional component and can only function completely when embedded into a proper system. When you select a Bluetooth module for your product, further consideration should be taken into hardware and software. The hardware of a Bluetooth module consists of a Bluetooth chip and an application processor. Most products currently on the market are embedded with Bluetooth modules equipped with application processors. The application processor in the module has internal or external flash memory, ROM and RAM. This kind of module also provides different I/O interfaces, including the time clock, serial communication interface, analog comparator, ADC, DAC, crystal oscillator and the debugging interface, etc. 

RN4677 Bluetooth 4.0 module

The Microchip RN4677 Bluetooth 4.0 module is a Smart Ready device able to communicate with other devices operating under Bluetooth Classic or BLE protocols. Programmed for IoT applications, it contains profiles for communication with Apple and Android Smart Phones in Bluetooth Classic (Master) and Low Energy (Central)roles. 

Microchip RN4677 Certified Bluetooth Dual Mode module supports both Bluetooth Classic and Bluetooth Low Energy (BLE) communication. Under Bluetooth Classic, RN4677 implements standard Serial Port Profile (SPP) that supports serial data transfer between two Bluetooth Classic devices. In addition to SPP for Bluetooth Classic connectivity, the RN4677 introduces a private Generic Attribute Profile (GATT) service for serial data transfer between two BLE devices.

 HC‐05 Bluetooth module:-

HC‐05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. The HC-05Bluetooth Module can be used in a Master or Slave configuration, making it a great solution for wireless communication. This serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses a CSR Bluecore 04 External single-chip Bluetooth system with CMOS technology and with AFH (Adaptive Frequency Hopping Feature).

Window shopping is the thing of the past especially after the pandemic hit the world. Although buying things online had existed for more than a decade but consumers preferred doing window shopping for most of their daily needs before. Now, it is not the same, COVID-19 popularized online shopping more than we all expected, especially to avoid the unnecessary outer world contact and to stay healthy. But this is not the case with electronics and Semiconductor industry. For so many years, most of the manufacturing companies preferred buying electronic components online for various reasons like competitive pricing, authentic products, after sale support, quick shipment, saves personal time and energy, etc.

Design engineers / procurement engineers play important role in buying the components for all these manufacturing companies. In the past there were lot of challenges and mostly engineers used to consult other engineer before buying any product but since the time the online shopping has come, they will have to just go online, look for the product by understanding its specifications and locate a part that matches their design requirement then they can simply buy it without any hassle. 

The recent contribution from the online component distributors have taken this to a different level in buying electronics components online. Apart from selling products they also publish technical articles, blogs and tech tips which keep design engineers hooked to their websites and help them to understand the new technology trends and designs.

Electronic component distributors these days offer just more than wide range of inventories. They also provide design support, assist you from the preliminary design till the development and some distributors go beyond that, they help you with developing necessary applications and cloud storage for your products to make your business complete.Campus Componentis one such distributor, our service does not stop with just selling the electronic components but we also provide exceptional support and advisory services. 

Below are some points why you should always consider buying electronic components online and why Campus component should be your preference:-

• Detailed technical information: Product’s technical information will be clearly available on our website.
• Original products: The products you buy will be authentic and will come straight from our multi-facility warehouse.
• Huge inventory: Wide range of products are available for you to select to meet your design requirements.
• Secured transactions: All the transactions done with us are safe and secure.
• Competitive pricing: We offer competitive pricing for all sort of customers.
•  Save a lot of your time, money and energy.
• After sale support.

Strong anti-counterfeit policy, satisfied customers, very strong presence in India, wide varieties of suppliers, billing in both INR and USD make Campus component to stand out from the regular component distributors’ crowd. 

Electronics is one of the fastest growing industry in the world, India’s electronic sector has seen an average growth of 26% annually and in the coming year it is expected to grow more than 30%. The demand for electronic components are rising every day and on the other hand there are a lot of new component distributors joining the game to meet this soaring demand. However it is very much advisable to ensure the authenticity and the standard of the component distributor before placing any order with them. 

Campus component started component distribution from 2014 and has helped a lot of startups to grow and successfully deploy their products in the market. We are experts in supplying products for various solutions including IoT, power solutions, ready modules, cloud services, and electric vehicles and charging stations. If you are looking to buy electronic components online or stuck with your product design then look no further and visit our website https://www.campuscomponent.com/  for all your requirements. We are ready to meet all your demands, feel free to get in touch with us and we will tell you more of what we can do to make your design a top notch product.

Contact US:-

Pune(HQ)

Email-:   sales@campuscomponent.com