In the world of electronics, accurately measuring high-frequency signals is crucial for a wide range of applications, from RF circuit design to audio analysis. While professional-grade frequency counters can be expensive, leveraging the power of …
Arduino Photodiode: Build Your Own Light Detector Ever wondered how your smartphone adjusts screen brightness automatically or how simple light-sensing circuits work? The secret often lies in a humble component called a photodiode, combined with t…
The ATmega328P microcontroller, a popular choice for hobbyists and makers, offers a powerful feature known as Pulse Width Modulation (PWM). Among its PWM modes, Fast PWM stands out for its simplicity and efficiency, making it ideal for controlling a…
Maintaining a stable temperature is crucial for many electronics projects, from simple heating elements to complex robotic systems. Traditional on-off controllers can lead to significant temperature fluctuations, making them inefficient and potentia…
I have earlier shown how to design motor controller with IR2110 MOSFET driver IC. This motor controller circuit is a diy alternative to motor controller shields like the L298N motor shield and L293D motor shield which is popularly used for RC car…
I have been learning motor controller circuit for driving RC cars and robotics application. I have found that mosfet driver IC like TC4427/TC4428 and IR2104/IR2110 are frequency used in driving robotic motors. They are not useful only in motor appl…
In my previous post on using Laplace and Z-Transform for building PID controller with Arduino . In that post I provided the schematic but did not explain. So I am writing this note on the hardware interfacing aspect. 🧰 Part 1: Hardware Interfacing…
I am at early stage(although its 2 years now) of building a WISP(Wireless Internet Service Provider) network. And since I am deploying the WISP network in rural mountainous area. But I have realized that I need UPS( Uninterruptible Power Supply) fo…
LEDs may seem simple , but powering them with just a resistor isn't always the best idea—especially in battery-powered systems or where stable light output is crucial. In this tutorial, we'll learn how to drive an LED using constant current…
Looking to control an LED using your Arduino and a serial connection? In this tutorial, we’ll show you how to use Tera Term(a popular terminal emulator) installed on a PC to send commands through a DB9 connector and MAX232 chip to turn an LED on and…
In this guide, you will learn how to control the direction and speed of a conveyor belt using an Arduino, H-Bridge, and a potentiometer. Whether you're building a simple DIY automation project or a more complex robotic system, this tutorial will…
H-bridge circuit can not only be built with MOSFET transistors bu also with bipolar BJT transistor. Here I wanted to post about BJT based H-bridge circuit to drive motors which can be useful in robotics. The H-bridge circuit is constructed using tw…
