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
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
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