Get the „Unoffical guide to getting up and runing with the Raspberry Pi Camera“ as an online or download PDF version :
© http://www.element14.com
found via Heise
Schlagwort: microprocessor
DiveDuino – DIY dive computer
“ What is DiveDuino?
Right now Diveduino will not replace your dive computer, but it can log your depth and temperature during your dive, saving it to a MicroSd Card in a TEXT file format so you can import it to excel and do your fancy dive profile graphics, no need of special $100 USD cables that all the diving equipment manufacturing companies sell. Plus it has a display for that information with a actual graph of your dive profile.How it came to my mind?
DiveDuino came to my mind since I am an active diver and I enjoy the sport. I am an electrical engineer and at work I came across with the Arduino platform. Dive computers are expensive, if you want all the fancy features, you can find some computers for about $150 USD and others for about $1500 USD. Every basic dive computer has this indicators: No Decompression Limit(NDL), depth, temperature and elapsed time. So why not create something with the help of the Arduino open source platform, I found a sensor that could interact with Arduino and the rest is the prototype that I am building.“
Project is still fund raising at Kickstarter http://www.kickstarter.com/projects/1454384970/diveduino-diy-dive-logger?ref=ending_soon
Make a slim watch with ARM Cortex-M3 EFM32
„Hack-a-Gecko project by Anders and Adam
How to make a very slim watch and keep battery life long? In this Hack-a-Gecko project, they tried to catch two birds with one stone.
The Idea
We thought it would be cool to utilize the extremely low power EFM32 in combination with an extremely low power display to create a wrist watch demo application. And usually, the smaller and thinner something is, the cooler it is. (Admittedly, wrist watches do not necessarily follow this trend… big watches.)
Anyway, we wanted it slim. The starting point was the memory LCD display from Sharp (link). It is truly a Nano ampere display technology. And it is also thin, only 0.75 mm. A watch also needs a battery, cool new technologies exist such as the Thinergy battery, but the voltage of 4.1 V is a bit awkward. We decided to use a standard 3.0V CR1616 cell as it can power the EFM32 and display directly. Thickness of battery + display is 2.35 mm, is it possible to design the electronics as well within this thickness limit…? Challenge accepted!“
http://blog.energymicro.com/2012/12/12/make-a-slim-watch-with-arm-cortex-m3-efm32/
found via http://hackaday.com/2012/12/12/super-slim-wristwatch-build/
Raspberry Pi: MPEG-2- und VC-1-License in shop
Now you can use the Raspberry as a Mediaplayer and further software updates will allow encoding to.
Pocket Mini Computer
“ The Pocket Mini Computer was designed by Jeff Ledger.
The Pocket Mini Computer is pre-installed with a COLOR BASIC. COLOR BASIC is similar to the BASIC found on common microcomputers of the 80’s and early 90’s.
Explore micro computing with a machine which:
Can be successfully assembled in an evening.
Can be programmed in BASIC. (and other languages)
Can play games and run programs.
Most importantly: Can be understood.
The Pocket Mini Computer Kit arrives as a project which requires a small amount of soldering, all components are „thru-hole“ making it an easy project for anyone with modest soldering skills.
The Pocket Mini Computer hardware supports:
VGA Output
Right/Left Audio Output
PS2 Keyboard
Wii Classic/Nunchuck controller connection
Optional SRAM (32k extended RAM using 23K256)
Optional IR receiver connection
Optional I/O experimenters‘ port“
http://propellerpowered.wikispaces.com/Pocket+Mini+Computer
Raspberry Pi unpacking
Shipping and handling from RS components in the known perfect way. TheRaspberry Pi is a device with huge possibilities.
What is ANT+ and what can you do with it and a MSP430 + Android ?
ANT+ Between MSP430 and Android
„Smartphones are equipped with dizzying array of wireless communication capabilities. Some of these features just go totally unnoticed. One such wireless communication protocol is called ANT+. A friend of mine wanted to make a working prototype of an idea he had using ANT+ technology. While there are other mcu’s (read atmega/arduino) already had some libraries and code written for communicating against ANT+, it wasn’t enough for me.
- Most of the existing code only worked as a slave, where it just tried to receive data sent by Garmin Heart Strap.
- This slave implementation was only on either arduino or PC (python and C)
What I was more interested in was to leverage the ANT+ radio to not just receive data, but also send data. I wanted the mcu to interact with the world and use ANT+ to transmit data to my cellphone, for example.“
http://jbremnant.wordpress.com/2011/11/27/ant-between-msp430-and-android/
MSP-EXP430F5529 Experimenter Board unpacking
iPhone RFID with ID-12
That’s cool, on http://blog.section9.co.uk/2010/03/iphone-rfid-reader.html you can see the work process in pictures. The RFID chip is from http://www.id-innovations.com/new%20launch.htm.
„The idea behind this project is to see what the iPhone’s serial is capable of and to try and have a little fun with RFID along the way. This reader works with the low frequency (125Khz) tags but I have a half working version for MiFARE Hi-Frequency as well.“
TI eZ430 chronos unpacking
Lucky me, the TI eZ430 chronos arrived with Fedex.
LEGO Mindstorms Sudoku Solver
A very great work, which shows the abilities of the Lego Mindstorms. The building instructions aren’t online yet, but hopefully follow soon.
DIY Apple I clone – replica I
For those who’re to young for an original apple bought in the shop, here is the ultimative chance to get their own one
“ The replica 1 is a functional clone of the apple 1 computer created by Steve Wozniak in 1976. This was the computer that Steve Jobs and Woz used to start Apple Computers in 1976. The latest version of the replica 1 is labeled SE for Second Edition. The replica 1 functions exactly like the apple 1 with many of the same components like a 6502 CPU and 6821 PIA. It comes with 32K RAM and 8K EEPROM. Addtional features like a ps/2 port, serial, USB port, ATX and DC wall power supply connectors makes the replica 1 a fully functional computer system for todays collector or hobby builder. Available as a kit or assembled, the replica 1 is sure to give you hours of fun and excitement as you relive the glory days of computing. As a new feature, a full blown assembler called Krusader written by Ken Wessen was added to the EPROM space giving the user the ability to assembler 6502 programs right on the replica 1 without a PC. Write 6502 machine code programs using mnemonics instead of just programming hex code into the memory. This added programming tool makes the repica 1 not only a nostalgic computer but a great learning tool and introduction to microprocessors.“
http://www.brielcomputers.com/replica1.html
Or the non-hardware alternative, the apple I emulator:
„Pom1 is an Apple 1 emulator and is being ported to C from the original Java version. It uses the Simple DirectMedia Layer library and works on most platforms“
http://pom1.sourceforge.net/?page=about
DIY Z80 microcomputer from scratch
„My Z80 microcomputer is hand wired using the wire-wrap prototyping technique. This method uses thin 30 gauge wire, a special wire-wrap tool, and wire-wrap sockets. The sockets have 1/2 inch long square posts, which you use the tool to wrap (or twist) the wire onto the post. As long as you have 5 or more wraps on the post for a single wire, the connection is semi-perminant. This method was used because it’s easy to change connections and is faster than soldering each wire. Wire-wrapping was a popular method used in building early computers. In fact, the AGC computer used for the NASA Apollo missions were completely wire-wrapped! After I finished my computer, I went through more than 350 feet of wire!“
http://www.derivedlogic.com/Z80%20Microcomputer/z80micro.html
DIY Wireless keylogger
„Familiar with the concept of hardware keylogging? A hardware keylogger is a perfect solution for monitoring user activity, at very low risk of disclosure. A hardware keylogger is a purely electronic device, so no access to the operating system is required, no traces are left, and software has no possibility of detecting such a device. However, the hardware keylogger concept inherits one weakness: physical access to the keylogger is required for retrieving captured data. This problem has finally found it’s solution: a Wireless Keylogger.“
http://www.keelog.com/wireless_keylogger.html
„Forknife“ the Android G1 controlled robot
„To see how well this idea worked I decided to build a small robot and a few applications to control it last weekend. The result of this is the Forknife Android G1 based robot, the RoboComm android application, and the RoboServ java server which I am happy to say work well. An overview of how the entire system works may be seen below.
In case others are interested in this, stuff, I have made my code for the robot, server, and android application available under the GPLv2 license. Please don’t get too upset with me if the code isn’t very polished.. I threw this together pretty quickly. At least I commented it! Be thankful :)“
http://macpod.net/misc/android_robot/android_robot.php
