Introduction If you are a music buff, then our sheet music generator will be the answer to your dreams. You plug in the instrument of your choice and as you play the keys our system will create the sheet music that attests to your musical genius. Although there are similar systems on the market. They […]
Sheet Music Generator using Mega32 Microcontroller Read More »
The project which we are presenting is not the project we presented in our proposal. We initially planned to build a WWVB time-code receiver, which would demodulate a 60 kHz signal and extract an extremely precise time according to the National Institute of Standards and Technology (NIST). Unfortunately, due to a weak signal and noise
Hard Drive Based AVR Programmer Using Mega163 Read More »
Introduction The main incentive behind this project was to see how much I could cram, in terms of both hardware and software, into a wristwatch-like device that is no larger than the display itself. An OLED display was chosen for being only 1.5mm thick and not requiring a backlight (each pixel produces its own light),
DIY Digital Wristwatch Read More »
Where a plain shift register stops A 74HC595 is the default answer to “more outputs than pins”, and it keeps the structure every driver below uses: serial in, parallel out, with a latch holding outputs while the next word shifts. It is a logic part. TI’s SN74HC595 datasheet guarantees ±6 mA of drive at 5
High-voltage seven segment LED display driver with SPI interface Read More »
Introduction Infrared (IR) can be used for line-of-sight communications over low to moderate range. IR is nice because of the lack of interference (except for sun and compact fluroscent lights) and freedom from FCC regulation. The web site http://tthheessiiss.wordpress.com/2009/08/05/dirt-cheap-wireless/ (Jacob Sikker Remin, 2009) shows how to use a IR remote control receiver and IR LED
Infrared Communications for Atmel Mega644-1284 microcontrollers Read More »
As simple as it gets and still works This LED flasher occurred to me while reading about negative resistance in transistors. It was reported that Leona Esaki, who was at Sony at the time, had been surprised to see a negative resistance region while investigating production defects in transistors which lead to his thesis work
Simplest LED Flasher Circuit Read More »
A circuit that drives a red LED from a 1.5 volt battery and simulates an incandescent light. Duty cycle can be changed by selecting resistor values. Photo 1. This printed circuit board is 3 cm long. The first prototype was made with through hole parts. This is a single sided surface mount board with one
Finally, white LED’s are bright enough to use in a practical stroboscope. This circuit can operate as a bench-top stroboscope that, in conjunction with an oscilloscope or frequency meter and bench top power supply can accurately measure rotational speeds, or it can be operated hand-held from a single 9V battery, using a marked scale to
White LED Stroboscope Read More »
Overview Where I live most of the time, the AC power drops out upon occasion. This used to leave me groping around in the dark for a flashlight. I could have bought a battery-backed up “emergency light” for about US$35, but being basically metal boxes with floodlights attached, they would make my living room look
White LED Battery Powered Power Failure Light Read More »
BUT FIRST AN IMPORTANT NOTE: This project uses lethal voltages. If you are not experienced in working with lethal voltages, read this project, but don’t build it. You only have one life, and AC power can take it from you very quickly, or leave you with terrible injuries. When working on high voltages, remember: •
A White LED Night Light Design Read More »
