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Computer per scooter con Arduino

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Kurt Schulz build a Scooterputer which is a scooter computer based on Arduino platform a custom sensor shield and Liquidware touchscreen OLED display. Main features are: [via]
* Battery voltage indicator
* Time and date
* Temperature
* Lean gauge with resettable max L-R indicators
* Current speed
* Resettable max speed indicator
* Odometer
* 2 resettable trip meters
* Latitude and longitude readouts
* Compass heading readout
* GSM/GPRS quad-band cellular module
Arduino-based scooter computer - [Link]

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Sfera a led rotante

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tramite Hacked Gadgets - DIY Tech Blog di Alan Parekh il 20/04/10

spinning-rgb-led-ball_1



Our friend Carl who has been featured here many times in the past for his laser projects has made an improvement to his Spinning LED creation. Have a look at the new Spinning RGB LED Ball.
"Unlike it's predecessor this one has three axes. It was very challenging to build, with a total of 9 slip-contacts, not including the motors. I made it from scrap I had laying around and it took about a week to build. I use standard DC-motors controlled with pulse width modulation, the LEDs are controlled with a modified bike light with adjustable frequency."












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Mark1.5 Coilgun

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mv-coilmaster-mark15-upgrade_2



Our friend Daniel Eindhoven from Megavolts has been hard at work improving on the coil gun that we featured here before. The new circuit modifications allows the gun to fire every second now. The new halogen charge resistors look much cooler also.
"At the moment the only limiting factor for fire rate is the charge time, this is the time the capacitor bank takes to get fully charged. This time can be influenced by the charging resistor, a lower value charge resistor will reduce the charge time but increase the charge current.
The first version of the CoilMaster has a 150W bulb as charge resistor, at the time I was pretty fond of the (relatively) short charge time. But I recently realized that it could be improved by a LOT. This upgrade takes charge time to the next level. In stead of one 150W bulb now  2×1000W halogen tubes are used, the entire charge circuit had to be upgraded to handle the peak currents."






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Analizzatore stati logici 4 ch

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tramite Embedded projects from around the web di admin il 18/04/10

Logic analyzers are handy when dealing with multiple channels of digital signals. You may want to find failures in data lines, hack unknown devices and many more. So logic analyzer should place a decent place on your workbench. As logic analyzer isn't a device for everyday use especially if you have a two channel oscilloscope – buying it shouldn't be necessary. It is more fun to build one. Here is a pretty low budget logic analyzer built around PIC18F4580 microcontroller.
It has four channels operating at 200Hz to 2MHz sampling frequency. Its voltage input range is up to 5V. Each channel can hold 1024 samples in memory. Traces are displayed on standard 64×128 graphical display. Whole design is powered from standard 9V PP3 battery what makes it handy little device.

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iHexi Returns: Now With Android Support!

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tramite Trossen Robotics Blog di Andrew il 16/04/10

You may remember this very awesome Hexapod from a previous post, controlled via a custom iPhone app. Well iHexi has returned with a few upgrades; namely Android phone support which eliminates using a PC as a 'go between'. Looks to me as though it's moving a bit smoother too, definitely an impressive piece of work and the video has a pretty awesome soundtrack as well! Check it out!

On an unrelated note; our good friend Rob Farrell of Farrell Robotics posted this video of two DX-117 based humanoids duking it out at last years Korean Robot Festival; these are some of the more impressive lightweight humanoids I've seen!

Share and Enjoy: TwitThis Facebook Digg MySpace Google E-mail this story to a friend! LinkedIn StumbleUpon Technorati

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Finestra viruale con IR LEDs + Wiimote

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Why wake up to the same view each day if you can wake up somewhere different?  Using a Wiimote, Mac, and infrared LEDs, you can create your own virtual windows which change as you move locations within the room.  You can download WinScape for your Mac computer and use an iPhone app to control it remotely.  So basically, all the hard work is done for you – You just need to install the TVs and connect everything.

How to Build your Own:



The video above features the build process of the wall which houses the two TVs.  Check out full details on the build site which also features tips on shooting your own HD video on location so you can 'bring your vacation home' to your living room.  A superb project with stunning results!

Popular Wiimote Projects:


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Arduino webserver

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The Arduino platform should be perfect for throwing together a lightweight webserver because of the availability of quality shields that take care of the hardware for you. As [Ovidiu Predescu] found, there are a few hiccups along the way and he's put together a guide that covers the workarounds. Specifically, using an Ethernet shield and data logging shield at the same time produces a bus conflict which he sidesteps by cutting the CS pin trace on the data logging board and moving it to a different pin. There is also a bug with one of the chips on the Ethernet shield that is fixed using a similar method. So if you're not just going to etch your own webserver hardware maybe this is the next best thing.

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Braccio robotico

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We're pretty used to seeing CAD used in the design process for most things. It's a bit of a shocker to come across a project this involve, and this well executed, that didn't use CAD.
[Anton] spent 100 hours building this manipulator arm by hand. He made the parts by drawing them on styrene and cutting them out with scissors. He has started building version two with AutoCAD but from what we've seen in the video after the break, improvements on the original design will be minor. The speed and fluidity of the servos with added magnetic encoders makes for a graceful robotic dance; we'd love to be its chess partner.

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PDF istruzioni Arduino

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Arduino Cheet Sheet V02Bsmall
Arduino Cheatsheet very handy! The Mechatronics Guy writes -
I really love cheat sheets. In a lot of cases they can take the place of an entire manual. So I was surprised, given its popularity that I couldn't find a single-page reference for the arduino online. I tried to make a sheet that captured all the things I hit the reference for while programming. What data type does the millis() function return? How long till that overflows again? How large can a long get? What baud rates can the serial handle?
Grab the PDF here.

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Laser pointer controlled LED matrix game

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This is a little cute game cube that is controlled only by simple laser pointer. The game itself is very simple – you have to shoot falling dots on LED matrix screen with laser pointer as long as you can to gain more points. During time dots fall faster and faster what makes it really challenging to beat previous records.
But probably the most interesting part in its game is laser pointer detection technology. As sensing device it uses LED matrix itself. To do so there are two measurement techniques (reverse bias and direct measurement) used where one detects the row and second column at which LED laser is pointed. Game is controlled by Arduino mini board.

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Software open source per analizzatore di stati logici

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[Christian Weichel] has been hard at work developing LogicAnalyzer, an open source tool that may interest you. It is designed with SUMP Logic Analyzers in mind but a main goal is expandability. What this means is that it plays nicely with things like the Open Workbench Logic Sniffer or you can do a bit of fiddling to get it to work with your own designs. The program is based on Eclipse so you should be familiar with how it works and you can get it running easily on multiple platforms. Take a look at the wiki for a quick start.

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Cubo in equilibrio su uno spigolo

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Systemarchitecture

The Balancing Cube
The Balancing Cube can balance on any of its edges or corners. It owes this ability to six mechanisms on each inner face that rotate in concert and achieve equilibrium for the overall system. Each of the mechanisms is an autonomous unit with sensors, a computer, a motor, and a battery on board. The six mechanism share information and coordinate themselves over a network of their computers.

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