Faveren Caleb 
Developing a HC-05 Bluetooth car that is controlled via a Bluetooth mobile app. It is similar to a wireless remote-controlled car. It uses an Arduino Uno, a HC-05 Bluetooth module, and a H-bridge motor driver. Components used in the S/NO Component Value Qty 1 Robot car chasis – 1 2 Arduino Uno – 1 3 L298N – … Read more
We developed a 2 Channel HC12 module wireless remote in this project. This remote will be able to send commands to 2 different HC12 receivers operating on different channels. We will make use of Arduino boards and HC12 antenna. Arduino Nano was used on the remote any Arduino will work just fine. Components Used for … Read more
In this project, we will design a dual power source charger. This charger uses power from the electricity grid and solar power. The system prioritises the electricity grid over solar. In simple terms, if both sources are available, the system will automatically select the electric grid. This charger features two main characteristics: an automatic power … Read more
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
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
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
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
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
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
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
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 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
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
ESP8266 has become a common component for building IOT-capable devices. The I2C display module is a popular I2C technology that makes interfacing devices easier. It stands for Inter-Integrated Circuit. ESP8266’s popularity has made it important to be able to interface Display to it as it is one of the most commonly used microcontrollers. The information … Read more
Imagine a world where buttons vanish, and your touch alone activates devices. Picture a light switch that responds to your fingertips, a doorbell that senses your approach, or a sleek control panel that requires no physical buttons. Welcome to the realm of TTP223 Capacitive Touch Sensor, where magic meets technology. In this blog post, we’ll … Read more
The TDA2822 is a versatile and widely-used integrated circuit known for its role as a dual audio power amplifier. It’s designed to function in portable audio devices like cassette players, radios, and CD players due to its low voltage operation and power efficiency. This IC stands out for its ability to operate on a supply … Read more
Introduction to ESP8266 (Nodemcu) The ESP8266 is a compact Wi-Fi module that has gained popularity for its versatility in Internet of Things (IoT) applications. It integrates a powerful 32-bit microcontroller and a Wi-Fi transceiver into a small footprint, making it ideal for space-constrained projects. With its ability to run at 80 MHz or 160 MHz, … Read more
Introduction to bi-directional counter with light control A bi-directional counter with light control is a device that can measure the number of people entering and exiting a place at any point and turn on lights accordingly. It can be used for various applications, such as counting visitors in a museum, monitoring traffic flow, or controlling … Read more
Introduction to smart traffic light system Traffic congestion is a common problem in many urban areas, causing delays, frustration, and pollution. One of the factors that contribute to traffic congestion is the inefficient operation of traffic signals, which are often fixed and do not adapt to the changing traffic conditions. To address this issue, a … Read more
Introduction to IOT based gas safety system IOT gas safety system is a system that is meant to reduce then rate of gas incidents. A gas safety system is a device that can detect, prevent, or mitigate the hazards of gas leakage in various environments, such as homes, industries, or vehicles. Gas leakage can cause fire, … Read more