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Showing posts from August, 2011

New in store: Bi-color LED mini-display shield

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This is my third and newest LED display shield for Arduino. It features two 8x8 RG (red/green/orange) 3mm LED matrices and it has the Arduino form factor, so it stacks perfectly on top of an Arduino 2009/Uno. This Bi-color LED mini-display shield uses a similar schematic as my other Dual LED matrix shield , based on four 595 shift registers and a driver, in SMD package. The two 8x8 RG LED matrices plug into the machined (round) female headers. The photo below shows all 3 LED shields together for size comparison, along with an Wiseduino . The " LED mini-display shield " introduced here is in the top-right corner. (All other shields in the photo are sold out.) This LED mini-display shield  also features 2 right-angle micro push buttons. The LED mini-display shield comes fully assembled and tested.   (US$35, free shipping to North America)   (US$40, free shipping outside North America) The LED mini-display shield can be seen in this video, plugged into an Arduino running a te

Wise Clock 3 User manual

Update Mar 24, 2011 New features have been added in the Dec 2011 release, see this post . I was finally able to put together a brief "user manual" for Wise Clock 3 , which is also the last step of my "Wise Clock 3" instructable . Here it is, below, cut and pasted from the instructable. Wise Clock 3  has 3 buttons, named (in the silkscreen on the board) "Menu", "Set" and "Plus". The "Menu" button is the rightmost one as you face the clock, "Set" is the middle button. By pressing the "Menu" button, the menu options are shown at the top of the screen, in sequence. A menu option is selected by pressing the "Set" button. Some of the menu options (e.g. "Time", "Date") allow the user to set values, for example the time, the date etc. To increment these values, the user presses button "Plus". 1. Set up the time  - press "Menu" repeatedly until the option "TIME&

DIYGeigerCounter now completed

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Today I found the time to complete the great DIYGeigerCounter  kit-based project, started a while ago . As I was writing then, assembling it was a breeze, even though the kit I had, courtesy of BroHogan , was version 1.0. The Geiger counter worked nicely as soon as I powered it from (approx 5V) battery: the buzzer clicked and the LED flashed, even faster when the radioactive mantle was nearby. And this is where I stopped. But the  DIYGeigerCounter  kit also offers the smart option of interfacing with an on-board microcontroller, specifically ATmega328, thus making it the cheapest Arduino-based Geiger counter available (compared to the Radiation shield from Libelium or Geiger counter  from Sparkfun). To finish this project, all I had to do was: connect the LCD display as detailed here ; compile the software, provided here , and upload it; find or make a practical enclosure; assemble everything together. The result is shown in the photo below. The case is a cheap and sturdy plastic box,

IllyClock revisited - the minimalist look

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Remember IllyClock , the Arduino-alarm-clock-in-a-coffee-can ( featured on Instructables.com )? We now have a new streamlined version, featuring rechargeable battery shield, tilt switches, infrared receiver, buzzer. Although some of the "cool factor" is lost, this version is easier to build, a bit more practical (it is "portable") and smarter (with new, extended, software). It was just a matter of time until someone would prefix the name IllyClock  with an S. I wanted to be the first one on the record to do that; so from now on, we'll name this new version SillyClock . NOTE: One more reason to call it "silly". I wrongly assumed that the previous IllyClock sketch, referencing a rotary encoder, would work without modifications with the new dualRG LED matrix shield , which has the rotary encoder replaced by two buttons. My apologies to anyone whom I misled with my assumption. The modified code can be downloaded from here . This file contains the sketches

Big display (64x16) made of four 0832 LED displays from Sure Electronics

Here is some software help for those fellows interested in making a bigger (64x16 pixels) display by putting together four 0832 (sometimes also named "3208") displays from Sure Electronics ( datasheet here ). The code base was originally written by WestfW. I just adapted it to keep track of the new X and Y coordinates and to direct the commands to the right display (among the four). The four 0832 displays need to be arranged in the format below, with each one having the switch that corresponds to its number turned ON. +----------+----------+  |       1       |       2         | +----------+----------+  |       3       |       4         | +----------+----------+ The code can be downloaded from here . The 4x0832 setup running this code can be seen here (video taken by Sven). Note that the scrolling speed can be adjusted through the "delay" line at the bottom of the sketch, set to 3 seconds in the video.