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Upper right is the power for the microcontroller. Next to that is the microcontroller circuit board screwed to the back of the box. The white object below that is the alarm clock. To the left of the alarm clock are battery packs wrapped in blue tape. At the far left are two rows of terminal blocks arranged in groups of five. Each camera connects with five wires. Positive and negative camera power from the blue battery packs, a common ground for control voltage and powerup control and shutter control. Below is the walwart farm. Each camera gets its own battery pack and its own charger. Later models balls it out with less redundancy.
Microchip's MRF89XA transceiver has extremely low receive current of 3 mA for longer battery life in 868, 915 and 950 MHz Sub-GHz wireless networks. For additional information, please visit Microchip’s online Wireless Design Center at www.microchip.com/get/D2C7.
The solder side of the finished carrier, wired for the ATtiny2313 microcontroller. The blue wires connect to the crystal, the red carry the programming signals, and the black wire is connected to ground. (See decarchive.org/~prd/2009/10/breadboard-compatible-carrier... for more details.)
This chip failed when one of the circuit traces shorted open - you can see the damage in this picture.
From the collection of George Weistroffer.
The PIC16F1934/6/7 are the first microcontrollers to feature Microchip's enhanced Mid-range 8-bit core.
Together with the experience of the promoter in projects involving Government Sectors and Private Industrial Sectors,Techon Electro Controls now looks forward to participating in the International projects to carrying out Design, Manufacturing,Installation and commissioning of Small,Medium & Large Captive Power Plants as well as complete power utilization & distribution solutions.
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I happened to have a large (25mm) seven-segment green LED display. Each segment has two LEDs in series, so it needs 100Ω resistors.
I ordered a couple of AVR microcontrollers to play with, and while I'm waiting for them to arrive, I built an in-system programmer cable of the simplest type--the passive parallel-port-bit-banger. It was more of a hassle than I thought it'd be--maybe I should have just ordered one of these.
Each HP DL1414 display can show four characters in red LED segments. They need seven bits for ASCII input, plus two bits to select a digit and one to act as a write strobe.
This is an RGB controller for 16 RGB LEDs. It is based on the TLC5940 PWM LED controller and an ATTiny44. Those who read the datasheet for the TCL5940 or have used it in the past will say "wait, 16 RGB LEDs on ONE TLC5940?". Actually, the setup could control 32 RGB LEDs and still look acceptable. I am strobing the RGB anodes with power, and connecting the TLC5940 to common cathodes. This is intensive for the AVR because it must shift out the whole array and activate the new PWM settings before switching to the next color. It does work rather well, if you don't need dot correction. The normal approach to this array would use three TLC5940 chips for each row, which isn't acceptable for my 24x16 array. That would require 72 driver chips doing it the "right" way. My way requires only 12 driver chips (one TLC5940 controls 32 RGB LEDs = 96 individually PWM controlled LED elements).
The Digilent Pmod MTDS is a gorgeous 2.8" touchscreen display with a powerful on-board microcontroller that performs graphics processing tasks. The display is a capacitive touchscreen with QVGA resolution (320×240) and 2 finger multi-touch support.
The most compelling aspect of the Pmod MTDS is the programming experience provided by its Multi-Touch Display System (MTDS) Firmware and the associated libraries. These allow you to design sleek, stylish user interfaces very quickly and with very little code. The timing dependent tasks are handled by the firmware, so integrating the display into existing projects is also a snap. Some of the key functionality provided by the libraries include the ability to draw basic shapes and text, draw images stored on microSD with binary transparency, draw buttons and easily check if they have been pressed, and check the status and location of the user's two fingers. The libraries are supported in Arduino IDE and Xilinx SDK, and have been tested with Ardiuno, chipKIT, and Arty host boards.
What to do if you favourite microcontroller doesn't have enough hardware PWM pins? Software driven PWM of course.
There many absolutely dumb ways to do it, and I've probably tested all of these. They can be classified as "brute force".
A better way of doing it is to only do any work if there is anything to do. But you already know all of this of course. Calculate when to toggle the lines and let a timer do all of the work. Code can be found on my blog
Together with the experience of the promoter in projects involving Government Sectors and Private Industrial Sectors,Techon Electro Controls now looks forward to participating in the International projects to carrying out Design, Manufacturing,Installation and commissioning of Small,Medium & Large Captive Power Plants as well as complete power utilization & distribution solutions.
Sanguino is an open source Arduino-compatible microcontroller board that is based on the Arduino, and inspired by the Boarduino form-factor. It uses the atmega644P chip which has 4x the memory, ram and 12 more GPIO pins than the Arduino's atmega168.
More info: make.sanguino.cc/1.0
Sanguino is an open source Arduino-compatible microcontroller board that is based on the Arduino, and inspired by the Boarduino form-factor. It uses the atmega644P chip which has 4x the memory, ram and 12 more GPIO pins than the Arduino's atmega168.
More info: make.sanguino.cc/1.0
Saturday SMD help alden out of a time bind party.
We all hung out and did about 30 boards with 30 smd 603 LED's on the board. Very cool stuff. We made a Chinese electronics sweat shop in an Arlington workshop basement.
If you didnt come you missed out!
Talks and performances by people doing strange things with electricity
Fri 23 March 2012, 6.30-10pm with interval at the Showroom Cinema, Sheffield.
Dorkbot is a meeting of people interested in electric/electronic art in the broadest sense; robotics, kinetic art, microcontrollers, interactive art, algorithmic music, net.art... The only real conditions are that it is a bit strange and involves electricity in some way. It is really defined by whoever turns up, be it engineers who want to be artists, artists who want to be engineers, or the otherwise confused.
This MEGADORK event features a cabaret of talks and performances from among the UK's dorkiest, to entertain and amaze:
Paul Granjon - A strange performance from the world renowned self-styled robot artist.
Patrick Tresset - Talks about his drawing robot Paul (on show as part of the Alan Turing: Intuition and Ingenuity exhibition).
Daniel Jones and James Bulley - talking about generating live music from patterns of weather.
www.variable4.org.uk/about/intro
Sarah and Jenny Angliss - playing robot music from past futures.
spacedog.biz
Sergi Jorda - talks about the Reactable tangible tabletop music playground (which you'll be able to try out at the Central Library Saturday 24 March)
Dan Stowell - Demonstrates his use of the Risset illusion in techno music.
Silicone Bake - Live coded pop songs about love, death and counterfeit watches, where all lyrics are taken from spam emails.
Megadork is curated by Alex McLean.
Dorkbot started in New York, spread to London, and now dozens of cities around the world, including several active UK chapters; Sheffield, Bristol, Anglia, Newcastle, Cardiff and Alba (Scotland). Find out more at: www.dorkbot.org
Lovebytes 2012 - Digital Spring
A Festival of Art, Science and Technology
22-24 March
Sheffield UK
Perpetual Electro mechanical Calendar Clock powered by an Arduino Microcontroller. Full Westminster Chime of Quarter Hours and Hours.
All the parts are now soldered to the PCB for the persistence-of-vision gadget. The LED wand connects to the two brown connectors at the bottom of the board.
My new Arduino Diecimila board
Blog Entry:
cmpalmer.blogspot.com/2007/09/arduino-beakmans-motor-and....
Instructables
Schematic and notes, photographed right out of my notebook
Blog Entry:
cmpalmer.blogspot.com/2007/09/arduino-beakmans-motor-and....
Instructables
Complete with spelling mistake!
Finally cracked the printing of the time problem, I had to do a little (well a lot of) research into "C" programming, and eventually discovered the function "itoa" which (obviously) converts an integer to a string, which is exactly what I needed to do in order for this to work.
The 20x4 LCD for the Arduino, on its new brass stand. It's made out of a 100mm brass hinge, the type with steel washers. It has enough friction to stay at the angle you want, and it's heavy enough to make a stable base for the LCD. The LCD is held on by two M3 bolts and the hinge has three non-slip plastic feet under it to protect the table-top.
First step: gather up the parts and decide what kind of connectors to use. Also decide what kind of switch to use for the all-important reset button. Since taking this photo, I've changed my mind about the Molex KK connectors (having had another look at the Arduino), and substituted 32-pin DIN41612 connectors.
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The milled PCB for the ball-bearing tangible interface, with some of the LEDs attached.
Photographed at the Bristol Hackspace: bristol.hackspace.org.uk/
After soldering some wire to short the 12 resistors on the LoL Shield I've uploaded some example code to test the LEDs - I find that I've got one duff LED that needs investigating to see if it's my soldering or just a dead LED.
Wired up two of the AVR's I/O ports (Port B and Port D) to the left-hand connector. Also wired up power: 12V, 5V, 3.3V, 0V and -12V. The 3.3V regulator is yet to be fitted.
Product image of components from the Jennic range - www.sequoia.co.uk/components/manufacturer_list.php?m=12&a...
Jennic is a market leader in ZigBee, 6LoWPAN, IEEE802.15.4 wireless microcontrollers, modules and evaluation kits.