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Datalogger meteo

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tramite Embedded projects from around the web di admin il 27/04/10

Weather monitoring is pretty cool especially if your activity is related to climate changes. Or sometimes it is simply interesting to see the history in convenient format. Most temperature recorders are limited to blind logging to some media storage and current value display, but it is more fun to see temperature log right away without need to transfer data to PC and generate trace. So this project is actually what many will find useful and convenient.
It has a large 160×128 graphical LCD that is capable to display temperature and pressure trace over 3 days. The project is built around PIC16F876 microcontroller that is interfaced to Motorola MPX5100AP absolute pressure sensor and Maxim DS18S20 temperature sensor. So using such recorder will show how weather changed during last 3 days and will give some clue what's coming in near future due to barometric changes (increase of pressure indicates better while decreasing pressure leads to wet and muggy weather).

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Oscilloscopio da 40 MSPS

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tramite Hack a Day di Mike Szczys il 27/04/10


If you can fabricate single-sided circuit boards at home you can build this digital oscilloscope. It uses mostly through-hole components with just a couple of surface mount chips to contend with. An ATmega162 handles the hardware end of things with a CPLD used to manage the sampling rate. Data is displayed on a 240×128 LCD display which will be the most expensive component to acquire. It's still a lot cheaper than buying a commercially available oscilloscope, even if you get a base model and hack it to unlock all the features.

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Controllare la TV con arduino

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Learn how to use infrared LEDs to send signals to your TV and other electronic devices via an Arduino.  First, the Arduino will interpret IR pulses sent out by the TV remote, save them to memory, then "replay" them upon the user's command. You can use these techniques to make other electronics controllable via IR signals.

Decoding the IR signal may seem difficult, but luckily there is a pre-built library you can use.   Just copy and paste it into the Arduino library folder and you're good to go.  The schematic, code, and instructions can be found in the project details. The hardware consists of an IR receiver and an IR diode to transmit.  This project goes one step further and uses a wave of the hand to send the IR signals

Popular Remote Control Projects:

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Applicazioni con iRobot

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tramite adafruit industries blog di adafruit il 16/04/10

111209 Createpic

To celebrate National Robotics Week we have a cool GIVEAWAY, a iRobot Create (R) programmable robot – we have here at the Adafruit shop (arm not included).
Create is an affordable mobile robot platform for educators, students and developers – use it to experiment, learn and play! Here's just the beginning of the fun you can have with Create…
-Learn the fundamentals of robotics, computer science and engineering
-Program behaviors, sounds and movements
-Attach sensors, electronics, cameras, grippers and more
Create is preassembled and ready to use right out of the box. Beginners can observe the robot's behavior in any of the 10 demonstration modes or program the robot by downloading scripts with any basic terminal program. Advanced users can write custom software using a variety of methods that take advantage of the robot's "streaming sensor data" mode for more control of the robot. And highly advanced users can write programs for completely autonomous behavior.
Pt 2816
HOW TO ENTER Just show up at our weekly "Ask an Engineer" chat 10pm ET, Saturday night. We'll have a trivia question as usual and you could win.
Pt 2820-2
In celebration of National Robotics Week everything in our robotics category this week (until April 18th, 11:59pm ET) is on sale for 10% off. Use the code ROBOT on check out!

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Orologio con Arduino & Twitter API

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tramite adafruit industries blog di adafruit il 23/04/10

Twitwee Double
Twitwee Side
Back 520

Love this! twitwee clock
The Twitwee Clock is a modified Cuckoo Clock that wirelessly connects to the internet and constantly checks for new status updates or search results from the Twitter API. New Tweets are displayed on the built-in display in near-realtime accompanied by the charming yet obtrusive call of a mechanical cuckoo poping out of the clock.
The clock could monitor any twitter stream or search, so it could for example inform the user about new tweets in his personal timeline. In exhibition context however it is configured to react on self-referenced tweets. If "TwitweeClock" is mentioned in any tweet, the tweet is displayed on the built in screen and the cuckoo mechanism is triggered.
Thereby the observer has the possibility to interact with the clock by sending a tweet with the word TwitweeClock, the hashtag #TwitweeClock, or the username @TwitweeClock.

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Video di Robot che saltano e spider

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Robot videos from Chiba Institute of Technology, the stair bot is cute! via MAKE

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Ball Balancing Robot

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tramite Hacked Gadgets - DIY Tech Blog di Alan Parekh il 30/04/10

ball-balancing-robot


We have seen a Ball Balancing Robot before but this one takes the cake! It was developed by Masaaki Kumagai and Takaya Ochiai from the Robot Development Engineering Laboratory and Department of Mechanical Engineering and Intelligent Systems at the Tohoku Gakuin University in Japan.
Via: Make and IEEE
"The robot they built rides on a rubber-coated bowling ball, which is driven by three omnidirectional wheels. The robot can not only stand still but also move in any direction and pivot around its vertical axis."

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Piattaforma radio per Arduino

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tramite Hack a Day di Caleb Kraft il 15/03/10


It is basically a nice compact layout for an Atmel Atmega 328 with a wireless module.  Fully compatible with the Arduino IDE.  The JeeNode is available in kit form, but also all schematics and CAD files are available to download. It looks like they are mainly using it for home monitoring and control.  So far we've seen them put a temp sensor, power metering, and IR LED modules on their flickr set.

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Ricevitore radio per arduino per stazione meteo La Crosse TX4U

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tramite News il 08/04/10

Posted by Jonathan Oxer

When whittling down the list of projects for Practical Arduino I never expected the Weather Station Receiver project to be one that gained so much attention. To be honest I was dubious about whether enough people would build it to justify its inclusion, but felt that even if it wasn't built very often it was still worthwhile as an example of how to do signal timing analysis and bitstream decoding.

I'm glad we put it in, because it seems to be one of the more popular projects!

Reader Kelsey Jordahl contacted me yesterday with details of a modified version that reads data from a La Crosse TX4U system, using the circuit from Practical Arduino but with modified software to deal with the different data format.



Kelsey's system logs the data and generates nice-looking graphs that are displayed online.

For more information (including the modified source code) check out:

mysite.verizon.net/kajordahl/weather.html

mysite.verizon.net/kajordahl/weather/weather.html

Oh yeah, and this is probably a good time to mention that Freetronics is now stocking fully pre-assembled Arduino shields for the Weather Station Receiver project. The very first one was sold and shipped to a reader in Queensland, Australia, yesterday morning.



The shield implements exactly the same circuit as shown in Practical Arduino, but with a dedicated PCB design rather than using a protoshield.

There's more info on the 433MHz Receiver Shield for Arduino page at the Freetronics site.

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Lo stato del mondo con twitter e arduino

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tramite HacknMod.com - You name it. We hack it. di Joe L il 15/05/10


By monitoring a stream of tweets coming through Twitter, this mood light changes color based upon the frequency of words such as "angry, happy, or sad."  The system uses an Arduino which collects data from Twitter using a WiFly module.  After the analysis, a mood light displays the current mood of the world through RGB LEDs.

The system above features an Arduino with the WiFly shield attached to it.  Definitely a great starter project to learn about connecting and controlling your projects remotely.  Check out some of our similar projects below:

Popular Related Projects:

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Datalogger temperature con PIC

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tramite Embedded projects from around the web di admin il 08/05/10

Why would you need a temperature logger? It seems that yesterdays facts aren't interesting anymore. Anyway you still can find many places where you may find it useful.
Actually this is very simple and easy to build temperature recorder based on PIC12F683 microcontroller running at 4Mhz that measures temperature from thermistor resistor value via ADC. Temperature values then are stored to I2C 32kBytes EEPROM chip at desired intervals (1…256s).  Device is capable to collect up to 32000 data points and consumes very little power as it goes to sleep mode between measurements. When recording is done just read EEPROM contents with PC software and plot, analyze or do whatever you need. BTW, why limit yourself with temperature – there can be other different (resistive based) sensors attached to ADC channels like light, gas, force, etc.

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Globo rotante a led

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tramite Hacked Gadgets - DIY Tech Blog di Alan Parekh il 03/05/10

rotating-led-globe_8


Our friend Csaba Bleuer sent in this crazy project he completed. It is a Rotating LED Globe which is being driven by a ATMega Microcontroller. The globe image was created using a program called BmpToAscii, with this program an image can be converted into Ascii. In this case the Ascii is used to display the globe! We have seen some other spinning LED globes in the past but this one by Csaba seems very smooth in operation. There is a hand drawn schematic below and if you are interested in digging deeper into the detail have a look at the code that Csaba was kind enough to share with us.







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Scale luminose

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tramite HacknMod.com - You name it. We hack it. di Saikat il 08/04/10


Learn how to spice up your boring staircase with interactive LEDs to illuminate each step. As the video above demonstrates, the LED lights switch on one at a time when a person begins their journey up or down the stairs. The lights get deactivated as they progress. The project is part of Interactive Furniture's channel on YouTube.


If you're too busy to build it from scratch, you can buy a stair lights kit. The system uses a laser beam which signals an infrared transistor (the sensor), as the trigger to control the LEDs.

Popular LED Projects


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Collegare un anemometro ad internet con arduino

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tramite Electronics-Lab.com Blog di admin il 06/06/10

This tutorial on Pachube.com shows how to connect an Inspeed Vortex wind sensor to the Internet with an Arduino and ethernet shield. [via]
HOW TO: Connect an anemometer to the Internet - [Link]

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Come funziona un transistor

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tramite Electronics-Lab.com Blog di admin il 14/05/10




A bipolar transistor is a semiconductor device used to amplify or switch an electrical signal. On the youtube video above learn how a bipolar transistor is made and how it works.
How Transistors Work - [Link]

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Remote control reel mower

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tramite Hack a Day di Mike Szczys il 03/05/10


Challenged by hot days and steep turf [Grayson Sigler] modified his reel mower to use electric motors. The end product will be radio controlled but he lacked the necessary parts to make it wireless right now. Not to be deterred, he used a wired controller for prototyping and testing that should be easily replaced once the parts arrive. Sadly, the grade of his yard causes the small wheels to slip so he tried inserting screws into the tread for added traction. The small mower lacks the weight and footprint that the Lawnbot400 enjoys. That being said, solar charging is one of the future goals so this build, which he named RoMOW, wins out on the green scale. We've included the prototype video after the break that shows the blades spinning away.

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How To: DIY Arduino Balancing Surface

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tramite HacknMod.com - You name it. We hack it. di Joe L il 08/05/10



Here's another superb Arduino project using just a few simple components (which are available in our DIY projects store). It's a pretty simple setup using a laptop, webcam, servos, and an Arduino to monitor and balance a ball bearing on a flat surface.  The ball's position is traced via webcam and Processing.  Based on the ball's position, the servos make corrections to move the ball around the board.  See the video above for full details.

Once the rig has been built and hooked up to a laptop running the code, the steel bearing can be placed anywhere on the board and made to follow either pre-programmed routines or via mouse control. The webcam tracks the ball, keeping it from falling off the edge.  Check out the full details and code.

Related Balancing Projects:

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Optiboot makes your Arduino faster, sleeker

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tramite Hack a Day di Mike Szczys il 30/04/10

Tired of waiting for that Arduino sketch to upload? Find yourself limited by code space? Optiboot eases both of these problems. The package is an alternative bootloader that runs at a higher baud rate (115200 versus 57600) and it takes up 1.5 KB less space than the stock version. This means your sketches can be larger without upgrading to a beefier chip and they will take less time to upload, a lot less.
This fully compatible alternative to the Arduino bootloader requires an AVR ISP programmer to burn it to the chip on your Arduino. If you have an extra AVR lying around you could use the Arduino as a programmer and then physically swap the chips.
[Thanks Peter]

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