SPI stands for Serial Peripheral Interface. It is a common protocol used for communication between microcontrollers and peripherals. SD Card is a popular peripheral that uses SPI for communication. Here are some salient features of SPI −It uses four lines −Clock line (SCK), Master Input, Slave Output(MISO) for master to ... Read More

Don’t have Arduino IDE installed on your machine, but still want to write Arduino code? Alternatively, don’t have access to your machine, but still want to program boards with your code? Come in Arduino Online Editor. Head on to https://create.arduino.cc/editorYou will be asked to Sign Up if you are visiting ... Read More

We will have a comparison of the specifications of Arduino Uno and the STM32 Blue Pill Board.Arduino UnoRaspberry PiArduino Uno and Raspberry Pi are in different leagues altogether. Arduino is a microcontroller, while R-Pi is a Single Board Computer. R-Pi comes with its own operating system. Arduino has no OS, ... Read More

We will have a comparison of the specifications of Arduino Uno and the Arduino Mega Board.Arduino UnoArduino MegaPlease refer to the table below −Dimensions Pricing I/O PinsUnoMegaGeneralDimensions2.7¨ x 2.1¨4¨ x 2.1¨Pricing$20-23$36-39ConnectivityI/O Pins1454PWM Pins615Analog Pins616ComputingProcessorATMega328PATmega2560Flash Memory32 kB256 kBSRAM2 kB8 kBEEPROM1 kB4 kBClock speed16 MHz16 MHzVoltage Level5V5VUSB ConnectivityStandard A/B USBStandard A/B USBCommunicationHardware ... Read More

The important components of the Arduino Uno Board are shown below −The following table contains the description for each of the labels −LabelDescription17-12 V Barrel Jack2Voltage Regulator316 MHz Crystal Oscillator4USB - B Port5Reset Button6Digital Pins7ICSP Pins (SPI can be accessed from here)8ATmega328P microcontroller9Analog Pins10Serial Port TX RX LEDs11USB to UART ... Read More

In this article, we will see how to interface Arduino with the MQ-2 gas sensor. MQ2 gas sensor is used for detecting smoke and some flammable gases like LPG, Methane, etc. It changes its resistance depending on the type of the gas. This principle can be used to raise an ... Read More

In this article we will see how to interface Arduino with the LoRa module E32. LoRa stands for Long Range. It uses license-free sub-GHz RF bands for operation. These bands are different in different countries. In India, the permissible band is 865-867 MHz. LoRa is very ideal for IoT applications ... Read More

Zigbee is a wireless communication protocol targeted for battery powered devices (it has both low power and low cost). It generally operates in the 2.4GHz range (although there are geographic variations), and supports data ranges from 20 to 250 kbits/s.The transmission distance though, is small compared to the likes of ... Read More

In this article, we will see how to interface Arduino with a GSM Module, and send SMS using the module. You will need the following −Arduino boardA GSM Module (SIM800C, SIM900A, are popular examples, but you can have any other module as well)A GSM (2G) SIM Card, or a 4G ... Read More

Queue is a data structure that helps exchange data between different tasks or between tasks and interrupts. It holds a finite number of items (defined at the time of initialization) and operates in the FIFO mode.We will walk through an example that comes in with the FreeRTOS library, to understand ... Read More