Obstacle detecting sensors are one of the most basic type of sensors that electronic hobbyists use. There are several methods to make cheap obstacle sensors. These simple sensors are made using a IR Rx/Tx pair or Normal LED and LDR pair(this design is most basic and is heavily affected by environment lighting conditions). These sensor […]
Interfacing Ultrasonic Rangefinder with AVR MCUs – AVR Tutorial Read More »
Using PWM (Pulse Width Modulation) to control a device is a common practice in embedded systems; for example, you can use it to control the light intensity of a LED or control the speed of a DC motor. In this article, we will explain how to get a PWM from the AVR Atmega32 and we shalll
How to control DC motor speed using PWM on Atmega32 Read More »
Servo motors are a type of electromechanical actuators that do not rotate continuously like DC/AC or stepper motors, rather they used to position and hold some object. They are used where continuous rotation is not required so they are not used to drive wheels (unless a servo is modified). In contrast they are used where
Servo Motor Control by Using AVR ATmega32 Microcontroller Read More »
This projects uses 8MByte SDRAM from a 168 pin DIMM SDRAM and generates videosignal for a VGA monitor with a resolution of 512×480 pixels with 256 colors at 60Hz using mega8515. The project uses burst mode of SDRAM, which can feed up to 512 bytes without MCU help. This means that MCU can do anything
Atmel ATmega Video generator with SDRAM Read More »
7Ah Sealed Lead Acid Battery 7Ah Sealed lead acid battery is a very popular battery which people use in most places like fans, LEDs etc. The reason behind popularity of 7Ah battery is due to its medium size and medium Ah rating. By medium means, its size and ratings lies between the small batteries and
How to make Automatic Charger for a 7Ah Battery Read More »
Introduction This tutorial continues from Character LCD Displays – Part 1. In this part we will connect the LCD module to an Atmega8 microcontroller, then write some code to drive it. The Circuit Our first task is to build the circuit. We will be using an AVR 28 pin Development Board. For the power supply
hd44780 Character LCD Displays – Part 2 Read More »
Purpose of this article: 1) to learn how to connect the Micro controller in a simple circuit and how to power it 2) to see how to create a simple programmer (a device to connect the micro controller to a PC for uploading software) 3) to present a simple software program in C that controls
First steps with micro controllers (ATMega8) Read More »
Like me, you may have a few old Arduino boards or ATmega8 chips (in the boards) laying around from when you were first playing with Arduino. Those chips can still be really useful as the heart of a tiny “Minimal Arduino” setup. A normal Arduino board contains support components that make it easy to use.
Minimal Arduino with ATmega8 Read More »
Low power consumption Better Amperes display resolution while using low value drop resistor. Much smaller PCB size, only 5cm x 5cm. Still no SMD components. Easy calibration, only one voltage adjust and one ampere adjust preset, no voltage out detection. Voltage supplied by my 12Volt benchtop PSU(The resistor at output terminal is disconnected. The 10Ohm
Atmega8 based Voltmeter Ampmeter v2 Read More »
In playing around with DIY electronics, Pugs has developed enough confidence to share his knowledge with his juniors. So, in one such occasion, he decided to give a try to program a micro-controller, as part of the electronics hobby club. There have been many hobbyist micro-controllers, like 8051, PIC, AVR, … and an equivalent or
Micro-controller Programming on a Bread Board Read More »
