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Raspberry Pi

25 Posts authored by: Drew Fustini
I attended the Sensors Expo in Chicago this afternoon.  One of the interesting devices I came across was RadioBlocks from Colorado Microdevices: The Colorado Micro Devices RadioBlock is an IEEE 802.15.4 FCC and CE certified wireless modem. It has a simple UART interface to make it easy to drop into your end product or to experiment with. A standard 100 mil pin spaced header means you can plug it right into many common boards: Arduino, Raspberry Pi, BeagleBone, it’s easy – No spe ...
Want to build this project? View Parts   Say you want to know how much electricity an appliance like an air purifier is consuming? You can hook it up to the nifty Kill-A-Watt power meter (aka KaW).  The KaW will keep track of and display the killowatt-hours, or kWh, used by the plugged in device. However, the total will be reset anytime the KaW is unplugged and loses power.  Limor Fried (aka ladyada) recognized this shortcoming and created the clever Tweet-A-Watt project ...
Want to build this project? View Parts   I decided to check out the recently released Minecraft: Pi Edition: The first iteration of Minecraft: Pi Edition is now available! And it’s completely free to download. We’re adding new features in due course, but thought you guys would appreciate us getting something out to you as soon as possible. Using the latest Raspbian "wheezy" image, the installation process was a breeze following the download instructions, and I was ready t ...
Want to build this project? View Parts   During the last embedded systems meetup at my hackerspace in Chicago, Pumping Station: One, we did hands-on activity where we went through a couple of Adafruit's wonderful tutorials.  First, we learned how to read a photoresistor without an ADC using Adafruit's Basic Resistor Sensor Reading on Raspberry Pi.  Next, we hooked up typical 5V hobby servo motor to the Pi per Adafruit's Raspberry Pi Lesson 8. Using a Servo Motor (written by e ...
Want to build this project? View Parts   A couple weeks ago my Dad mentioned to me it would be cool if advent candles automatically lit themselves according to the date.  (One candle is lit starting the 4th Sunday before Christmas with an additional candle being lit for each of following Sundays).  I thought, hey, that sounds like an interesting project, so why not build it.  I didn't want to bother with the complexity and danger of lighting real candles, so I started se ...
Want to build this project? View Parts   I finally got a got a chance a couple weeks ago to experiment with my Alamode from Wyolum.  It's an The specified item was not found.-compatible board with an ATMega328 that sits on top of the Raspberry Pi.  It has has headers for Arduino shields and also features a real-time clock and microSD card reader: The setup for the Alamode on the Pi is pretty simple when following Wyolum's Getting started guide.  Essentially, you'll need ...
Want to build this project? View Parts   I followed Adafruit's great Drive a 16x2 LCD with the Raspberry Pi tutorial using: 16x2 character LCD Adafruit Pi Cobbler breadboard potentiometer   However, Fergus Byrne identified a problem with the Adafruit_CharLCD library for the Rev 2.0 Pi as GPIO 21 and 27 have changed.  It turned out the simplest fix is to switch the pin numbering scheme to that of the physical header rather than the Broadcom SoC.  Until Adafruit accep ...
Hello - I thought it might be helpful to highlight the process of updating a SD card to take advantage of the full 512MB on the new Raspberry Pi (Rev 2.0).  I am using an element14 pre-programmed SD card.  It contains Raspbian "Wheezy" with kernel and firmware from July 15th (per modification dates in /boot).  This is recent enough to boot the 512MB Rev 2.0 model, but only 256MB of the 512MB RAM will be recognized.   After booting the Pi, you can access the command prompt (c ...
I'm delighted that Ladyada has joined our Community, and Adafruit's wonderful Open Source Hardware products are now available from Newark element14!  The Raspberry Pi accessorries page now lists many of Adafruit's Raspberry Pi accessories.  Here is the full list of 20 Adafruit products available from Newark, and there are 19 Adafruit products available from Farnell.  (Farnell customers will have to pay delivery charge £15.95 once per order since it's direct ship from the US) ...
Want to build this project? View Parts   In my last post, I introduced the Pumpkin Pi: a Raspberry Pi project for Halloween.  It puts a Raspberry Pi inside a jack-o'-latern to provide web-controlled lights and sound: (click to enlarge; screenshot of latest version as of 2012-Oct-26)   The Pumpkin Pi software was written in Python with generous assistance from Bonnie King and can be found on GitHub under my account "pdp7" in the punkin_pi repository.     Install de ...
  #ShareTheScare this Halloween Visit our Halloween space and find out how to win one of two Cel Robox 3D Printers. There are two ways to win: Build and document your past or present Halloween projects. Tweet your best engineering spook with #ShareTheScare. Share your Project and Win #ShareTheScare Competition The Ben Heck Show Episodes   Want to build this project? View Parts   For Halloween, I thought I would combine the networking and GPIO capabilities of the Raspber ...
An exciting moment for me at Maker Faire this past weekend was spotting the Raspberry Pi Alamode.  Kevin Osborn had WyoLum's intriguing Raspberry Pi daughter board on display: It features an AVR ATMega328 just like an Arduino Uno.  The Alamode can be programmed with the Arduino IDE on the Raspberry Pi via the Pi's UART serial pins so a USB port doesn't have to be wasted.  Here it is atop a Pi in the Adafruit Pi Box (which is in convertible mode with its roof off): The Alamod ...
Want to build this project? View Parts   I previously wrote about adding a real-time clock and temperature sensor to the Raspberry Pi.  I've now added an Adafruit I2C 7-segment display to create a time & temperature display: Simon Monk conveniently ported Adafruit's Arduino library for the display to Python for the Pi as he covers in his blog post: Led Clock using Raspberry Pi.  His i2c7segment Python library is available on Google Code.  Simon describes the setup a ...
The Raspberry Pi Foundation released a new Raspbian SD card image yesterday with some interesting new features including dynamic overclocking.  I had the July Raspbian image on an SD card which I already setup with everything I need to do a demo, so I didn't really want to have to startover with a fresh image.  Therefore, I decided to give the upgrade process a try:   UPDATE: If you just want overclocking and not a full update of all packages, then asb suggests just doing sudo ap ...
The Raspberry Pi sparked a bi-weekly embedded interest group at my hackerspace in Chicago, Pumping Station: One.  At our last meeting, Eric Stein presented how he and the other members of our hackerspace brew brewing group have used the Raspberry Pi to automate chilling:     Eric and crew were able to easily add temperature sensing to the Raspberry Pi by following Adafruit's tutorial "Send Raspberry Pi Data to COSM".  It shows how to read the TMP36 analog temp sensor with ...

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