Introduction PONG, a video game that simulates a game of Ping-Pong between two players, has a long and pervasive history, and is said to be the first video game ever created. For our final project, we decided to pursue PONG with a twist. We designed and constructed a dual player mode, two-dimensional PONG unit. This […]
Pong2 Using Atmel Mega32 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 »
I’m planning to build a EEVblog-ish constant dummy load for battery and power supply testing. Dave in his build used a LCD voltmeter for the display. In the senseless pursuit of difference, I tried other display solutions including character LCD, graphics LCD, OLED, TFT, AMOLED, IPS, which resulted in several previous blogs but nothing ends up
Hacking a cheap LED voltmeter 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 »
I develop this MCP23017 Brekout Board to interface a 2×16 LCD display with any microcontroller using a standard I2C bus. Typical 2×16 displays needs at least 6 lines to work (when working in 4-byte mode); in some cases, this will be prohibited for some microcontrollers. With this board, you can control it with only two lines
Designing Electronics in Spain Read More »
−Inhaltsverzeichnis Thermometer width DS18S20 Hardware Software final Download Thermometer width DS18S20 In my new Dacia Duster is missing unfortunately an outside temperature indication. A finished thermometer with LCD did not separate from there while the contrast with sunlight usually particularly is. I had still alphanummeric LED display in red there for this project in the
ATTINY2313 Thermometer width DS18S20 Read More »
The purpose of this project was to create a simple, portable device that would periodically read sensors and then store the sensor data so it could be retrieved later. The result is the HexiLogger, “hexi” because it can support up to six different sensor inputs and “logger” because it will store the input data on
HexiLogger, an Arduino based data logger using ATmega328 Read More »
Abstract: Travel to outer space sounds very exciting but now we are here in our space ship and we have about 10 square meters for 5 people. It will take another week until we reach the first space station. I took my mp3 player with me and after so many days of travel I have
An electronic dice using ATmega8 Read More »
Introduction The Saver V5.0 runs simple clock emulation program, turns a night light on and off with preset time, say 19:00 to 22:00 everyday. The design features low cost, easy installation, no battery backup and no EMI. The AT89C2051 uses external oscillator generated by schmitt trigger gate CD4093, ~680kHz. Reference frequency was derived from 50Hz
Night Light Saver V5.0 using AT89C2051 Read More »
Scanning the web on microcontroller based USB solutions, I stumbled over Objective Development’s freeware USB solution based on Atmel’s AVR architecture. I decided to build up their reference design PowerSwitch with an ATTiny2313 MCU. Since I never used AVR chips before, the first challenge was to set up a code development environment enabling me to
Atmel AVR-firmware based universal USB-Interface using ATTiny2313 Read More »
