From the blog
Understanding Blynk IOT
Introduction to Blynk IOT Blynk is a low-code IoT software platform for businesses and developers. It allows users to create mobile and web applications for their IoT devices without any coding required. It supports over 400 hardware modules, such as ESP32, Arduino, Raspberry Pi, and more. Users can connect their devices to the secure Blynk …
Analog Circuits
How to make an I2C slave send data in an I2C system
The master device mostly controls the I2C slave device. In this post, we will send data from the master to the slave. This is useful as some projects require the I2c slave to send sensor readings to the master to be processed or displayed. We will send distance readings from an ultrasonic sensor and display … Read more
How to use Newping.h Library for ultrasonic sensors
Newping.h is a Library developed by Tim Eckel. It makes interfacing and using ultrasonic sensors much easier. The library can be installed directly from the Arduino IDE, or the zip file can be downloaded from GitHub. The default method of using an ultrasonic sensor was difficult and didn’t give much flexibility, with this library many can … Read more
How to use L298N dual H-bridge motor driver
The L298N dual H-bridge motor driver is among the most popular DC motor drivers. It features a simple interface and uses fewer pins to connect to the microcontroller. Its method of integration allows it to support a wider range of microcontrollers. In this practice, we will focus more on understanding how to use the L298N … Read more
How to use Serial communication between 2 Arduino boards
Serial communication refers to data transmission between two or more devices over a communication channel. Arduino Uno and other smaller variants have two (2) serial communication pins namely RX and TX normally D0 and D1 respectively. Serial communication is similar to I2C communication the main difference is the library used. They both make use of … Read more
How to use DHT11 sensor
DHT11 is a four(4) pin sensor for measuring temperature and humidity. This sensor is cheap, small, and reliable for temperature and humidity projects. The DHT 11 works well with all microcontrollers for Arduino to ESPs. This post will review how to use this sensor in projects. How to add the DHT 11 library in Arduino … Read more
IoT based irrigation system using Blynk IoT
Tradition irrigation systems require farmers to water their crops occasionally at least twice a day. With this design, we intend to make the process automated and also give the farmer the ability to monitor everything remotely from their mobile device. This irrigation system uses an ESP8266 which features an IoT aspect which connects to the … Read more
12V Solar charger With voltage protection and auto cut off
A solar charger is an important innovation as solar is one of the most common energy sources. This design has voltage protection for both over and under voltage. We used simple components and kept things simple for better comprehension. Components used in this project S/NO Component Value Qty 1 L7815CV 15V 1 2 1N4740A 10V … Read more
Multiple devices on a slave in an I2C system
A typical I2C system consists of two separate components or microcontrollers between which we intend to enable data transmission. The I2C system is handy in electronics design as it can facilitate communication between as many as 119 components. The I2C system is made up of 4 pins, they are power (Vcc), ground, SCL, and SDA … Read more
I2C communication between microcontrollers
I2C communication refers to the transfer of data between two devices. It stands for Inter-Integrated Circuit. It is a protocol that aids the communication/data transfer between two microcontrollers or components. For example, I2C technology is used in robotics to control all the different parts and aspects of the robot. Most electronic devices today make use … Read more
6 way remote controlled system
Introduction to a 6-way remote controlled system A 6-way remote-controlled system represents a significant leap in automation technology, offering unparalleled convenience and efficiency. This innovative system allows users to operate six different devices or functionalities from a single remote control unit. The design is based on the principles of user-centric engineering, ensuring ease of use, … Read more
