nabil’s blog: Bike Computer V0.1 Build - [via]
I’ve build the first prototype of my bike computer and have been developing the firmware for a couple of weeks now. Everything except the temperature sensor, accelerometer, servo headers, and Li-ion fuel gauge have been populated.
There have been a few minor electrical bugs like forgetting resisters for the ISP programmer, but nothing too difficult to fix for the next prototype. The bigger problems have appeared in the software world. First, the I’ve filled all 32K of the ATmega memory mainly because of lengthy sensor configurations, USB libs and FATFS. Second, RAM has become an issue when processing things like NMEA strings or drawing complex graphics. I’ve realized there is no point in having a vibrant TFT LCD screen if the 16MHz ATmega can only achieve millisecond refresh rates, which is why I’ll probably switch to some ARM processor for the next prototype. Maybe I’ll go with the STM32F4 series.
Bike Computer V0.1 Build - [Link]
Homemade Computer Sets Records In The Trillions @ NPR.
Shigeru Kondo is 56 and has already twice set the record for the most digits of pi calculated. His most recent record, 10 trillion digits, took a year to complete on his home-built supercomputer. Host Audi Cornish found out more about the computer, which caused a little family strife because it had to share electricity.
Homemade Computer Sets Records In The Trillions - [Link]
India announces $35 tablet computer to help lift villagers out of poverty @ The Washington Post… [via]
NEW DELHI — India introduced a cheap tablet computer Wednesday, saying it would deliver modern technology to the countryside to help lift villagers out of poverty.
The computer, called Aakash, or “sky” in Hindi, is the latest in a series of “world’s cheapest” innovations in India that include a 100,000 rupee ($2,040) compact Nano car, a 750 rupee ($15) water purifier and $2,000 open-heart surgery. Developer Datawind is selling the tablets to the government for about $45 each, and subsidies will reduce that to $35 for students and teachers.
India announces $35 tablet computer to help lift villagers out of poverty - [Link]
ximite computer. [via]
The Maximite is a small and versatile computer running a full featured BASIC interpreter with 128K of working memory.
It will work with a standard VGA monitor and PC compatible keyboard and because the Maximite has its own built in SD memory card and BASIC language you need nothing more to start writing and running BASIC programs.
The Maximite also has also 20 input/output lines which can be independently configured as analog inputs, digital inputs or digital outputs. You can measure voltage, frequencies, detect switch closure, etc and respond by turning on lights, closing relays, etc – all under control of your BASIC program.
The Maximite computer – [Link]
Free Downloadable Resistor Value Computer - [Link]
This project by Ed Zarick is an Arduino based vehicular control system known as JEEPuter. It combines an Arduino UNO, shift registers, LCD display, pushbuttons and a relay board, Ed interfaced this controller to his Wrangler’s ignition, garage door opener, lighting systems (with light-sensitivity control), radios and more. [via]
Arduino + Jeep = JEEPuter – [Link]
This article shows how to build a simple 4 bit computer using logic gates build by discreet transistors. It goes through basic logic calculations. Simon Inns writes: [via]
If you’ve ever wondered how electronic devices like computers can count, this article gives a simple introduction to binary and logic and shows how they are tied together with electronics to make both simple and complex computers.
4-Bit Computer – [Link]
This project is build by “Mario Mauerer” and it’s a computer for your motorcycle. It is based around a ATmega644 microcontroller and is able to display a variety of data on it’s LCD display. It measures gas consumption, Oil temperature, Water temperature, air temperature and battery voltage. The motorcycle computer is controlled from a rotary encoder with a click function. Also there is a real time clock to display time. Check this project in the link below.
Motorcycle computer - [Link]
* Battery voltage indicator
* Time and date
* Lean gauge with resettable max L-R indicators
* Current speed
* Resettable max speed indicator
* 2 resettable trip meters
* Latitude and longitude readouts
* Compass heading readout
* GSM/GPRS quad-band cellular module
Arduino-based scooter computer - [Link]
Here is an interesting video of “How do they make Silicon Wafers and Computer Chips”
How do they make Silicon Wafers and Computer Chips - [Link]