Introduction The goal of our project was to develop a remote control whose buttons would be readily programmable by recording the signal from another remote control. After revising several standards on infrared signals, we determined that the approach to take was to record the signal by determining the width of the transitions in the waveform, …
Our one sentence “sound byte”… *POP* Finally, a fair and balanced way to score Tae Kwon Do matches without the moaning and groaning of everyone. The Electronic Hogu system uses piezoelectric force sensors to determine how much force is delivered by the impact of a strike. Using waveform analysis and analog-digital conversion, it is possible …
We have created a real-time video object tracking / shape recognition device, and a fun game library to demonstrate its abilities. For our project, we wanted to push the video sampling and processing capabilities of the ATmega644 8-bit microcontroller. Using a high-speed analog-to-digital converter as an input device, we were able to sample a reasonably high-resolution grayscale image from a …
Human Tetris — Video object tracking Using Atmega644 Read More »
treet lights are controlled manually in olden days. These days automation of street lights has emerged. But one can observe that there is no need of high intensity in peak hours i.e. when there is no traffic and even in early mornings. By reducing the intensity in these times, energy can be saved to some …
Auto Intensity Control of Street Lights Using Atmega Read More »
This Instructable will allow you to build a drink coaster with a weight sensor in it. The sensor will determine the amount of liquid in the glass placed on the coaster and send this information through WiFi to a webpage. Additionally, the coaster have LED lights installed that will change color depending on the amount …
Hall sensors works on the principle of Hall Effect proposed by Edwin Hall in 1869. The statement proposed says, “The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current.” So, what could …
How to Use Hall Sensor with AVR Microcontroller ATmega16 Read More »
video Open Source Temperature Controller- Appliance Heat Exchanger Here’s a heat exchanger demo using the open source temperature controller. Full heat exchanger available here Intelligent controller, schematics, and code available here Read more: Open Source Temperature Controller- Appliance Heat Exchanger
Take Maxim’s MAX038 function generator chip, add some frills, and you have a pretty nice tool for the bench. Downloads: Main Circuit Schematic Power Supply Schematic You can build this with switches instead of buttons if you don’t want to use a micro controller. Here is the controller code. AVRStudio 4.x Assembler Source for AT90S1200A …
MAX038-Based Sweep/Function Generator With Markers using AVR ATtiny2313 microcontroller Read More »
Description A long time ago I bought a couple RGB rotary encoders from Sparkfun because they were cheap and I was already spending a bunch on other stuff. I thought they would be neat for some interfaces since it includes a push button. The interrupt service routine (ISR) for pin changes on the rotary encoder (for terminals …
RGB Rotary Encoder with PWM and ISRs Using an ATmega328 Read More »
In this project we are going to use one of the features of ATmega32A to adjust the brightness of 1Watt LED. The method that is used to adjust the speed of LED is PWM (Pulse Width Modulation). The method of PWM is explained here. Consider a simple circuit as shown in figure. Now if the switch in above …
