robocircuits@gmail.com Previously I made a battery-powered temperature and humidity sensor. that sensor worked on a 500mAh Li-ion battery. Then I realized that I didn’t have a lithium-ion battery charger. so I decided to make one. protection features are the most important part of working with a Li-ion battery. overvoltage can damage the chemical process of the … Read more
Introduction In the world of IoT (Internet of Things), wireless temperature sensors play a crucial role in monitoring environmental conditions such as temperature and humidity. Whether you’re interested in home automation, smart agriculture, or simply experimenting with new technologies, creating your wireless sensor network can be an exciting and rewarding project. In this article, we’ll … Read more
How to Drive the Arduino Color OLED The display is very small. It is almost the same size as the monochrome OLED display. But the resolution of it is not the same. It has a resolution of 96×64 pixels. So, it has a lower resolution at the same size. It can display 65 thousand colors! … Read more
Theory of LED Dot Matrix Display In a dot matrix display, multiple LEDs are wired together in rows and columns. This is done to minimize the number of pins required to drive them. For example, an 8×8 matrix of LEDs (shown below) would need 64 I/O pins, one for each LED pixel. By wiring all … Read more
It’s not only a quadcopter… it’s an open-source machine! Many of you face a problem when it comes to Flight Controller which is the brain of the Multirotor. There are plenty of ready-made pre-flashed Flight controllers in the market for cheap, But have you thought of building your Flight controller with your Arduino? So this … Read more
Introduction The world of educational robotics is constantly evolving, offering young learners and hobbyists tools to explore STEM (Science, Technology, Engineering, and Mathematics) concepts in engaging ways. One of the standout products in this space is the Cute:bot by Elecfreaks. Designed as an easy-to-use platform for Micro:bit, this little robot is packed with features that … Read more
This article describes the installation of the Heltec ESP32 series development framework and library. LoRaWAN-related code has been stripped since version 3.0.0. Heltec ESP32 framework only contains the basic code now, For the special ESP32 codes please download Heltec ESP32 Series Library. Preparation Installing development framework There are three methods to install the development framework, choose … Read more
Sure! Here are answers to some miscellaneous questions about Arduino: 1. What is Arduino? Arduino is an open-source electronics platform based on easy-to-use hardware and software. It is designed to make the process of using electronics in multidisciplinary projects more accessible. 2. What are some popular Arduino boards? 3. What is a sketch? A sketch … Read more
Setting up the Arduino Integrated Development Environment (IDE) is a straightforward process. Here’s a step-by-step guide to get you started: Step 1: Download the Arduino IDE Step 2: Install the Arduino IDE For Windows: For macOS: For Linux: Step 3: Connect Your Arduino Board Step 4: Configure the Arduino IDE Step 5: Upload a Sketch … Read more
Arduino is an open-source electronics platform based on easy-to-use hardware and software. It was designed to provide an accessible way for artists, designers, hobbyists, and anyone interested in creating interactive projects to work with microcontrollers. The platform consists of a family of microcontroller boards, a programming environment, and a supportive community. Hardware At the core … Read more