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A Switec X27-168 stepper motor wired up to the Arduino. The pointer was moving when I took the photo, hence the blur. These little geared stepper motors are designed to be used in car instrument panels, as the speedo, rev-counter, fuel gauge and so on. Not a great deal of torque, but quick to respond and high resolution (due to the internal gearing).
There's a software library to drive this type of motor, called Gaugette: github.com/clearwater/gaugette
Microchip Technology's RE46C162/3 Ion smoke-detector ICs make it easy to quickly determine which detector in an interconnected loop triggered an alarm. The ICs’ low energy use enables smoke detectors with a battery life of 10 years, and an interconnect filter enables a connection to other devices, such as CO detectors.
Lissajous figures are interesting curves that occur in systems where oscillation happens in more than one direction, for example when a pendulum hanging from a string moves in the plane.
These pictures are from an easy persistence of vision approach to playing with Lissajous figures. Read more about this project here.
Russ connected an MCP4822 dual 12-bit digital-to-analog converter (DAC) to the fine Tektronix 2213A oscilloscope. A program (sketch) on the Arduino microcontroller drives the DAC and generates the image by steering the scope's CRT beam along the lines in the drawing (vector-scan). en.wikipedia.org/wiki/Vector_monitor
Russ has updated the software with some animation: www.youtube.com/watch?v=g0dRNZrtVjg
Photographed at the Bristol Hackspace: bristol.hackspace.org.uk/
Dorkbot Bristol, December 2008: Drew operating the dropper on his high-speed photography rig. It's based on an Arduino and triggers the camera shutter and flash at precisely the right moment to capture the splash.
It's an alphanumeric persistence of vision display. This photo was taken by setting the camera on self-timer with a 2.5 s exposure. When the picture started going, I just walked through the frame at normal speed. Ha! I'm invisible.
Learn how to make it here.
An Atmel ATtiny24 microcontroller drives an R/C servo wich in turn rotates a line LASER taken from a LASER level.
The microcontroller runs a software real time clock and turns the servo and the line LASER to mimic the shadow cast from the style of a sundial as the time goes.
Microchip and Digilent's chipKIT(tm) Development Platform is the first 32-bit-microcontroller-based, open-source development platform that is compatible with Arduino™ hardware and software. More information is available at: www.digilentinc.com/chipkit.
USB Interface for SHARP PC-140x Series (sketch)
You will find more infos about this project on my blog:
The four-member PIC24FJ256GB210 microcontroller family integrates USB for Embedded Host/Peripheral/On-the-Go and 96 Kbytes of RAM. This large RAM enables the buffering of sizeable amounts of data and better overall throughput, for applications such as Ethernet connectivity, remote sensing, data logging and audio streaming. It can also be used to store generated images or data for dynamic content, such as real-time, remote sensor data graphs. In combination with Microchip’s free USB software library and TCP/IP stack, these MCUs lower system costs and footprints in a broad range of industrial, instrumentation/measurement, medical and consumer applications. For additional information, visit: www.microchip.com/wwwproducts/Devices.aspx?dDocName=en547864
Lissajous figures are interesting curves that occur in systems where oscillation happens in more than one direction, for example when a pendulum hanging from a string moves in the plane.
These pictures are from an easy persistence of vision approach to playing with Lissajous figures. Read more about this project here.
Microchip's mTouch™ Projected Capacitive Development Kit (part # DM160211, $119.99) includes a 3.5” sensor mounted on a sensor board, a projected-capacitive board with the PIC16F707 MCU and fully functional firmware. The kit enables users to connect sensors to up to 24 channels, without modifying the firmware. The open source code supports sensors with up to 32 channels, and the kit includes a Graphical User Interface (GUI) tool that enables customers to easily adjust key parameters that are important to their design. The kit can be purchased today, at microchipDIRECT (http://www.microchip.com/get/746C).
A small present for my girlfriend.
More infos at blog.gut-man.de/2009/11/08/kleine-aufmerksamkeit-fur-die-...
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
Microchip's PIC12LF1840T48A is the first in a family of single-chip devices that integrate an eXtreme Low Power (XLP), 8-bit PIC® microcontroller with a sub-GHz RF transmitter. The PIC12LF1840T48A’s combination of features in a single, 14-pin TSSOP package makes it ideal for space-, power- and cost-constrained applications, such as remote keyless entry fobs for automobiles, garage doors and home security systems, as well as a broad range of other home and building automation systems. Additionally, the device is optimized to run Microchip’s royalty-free KEELOQ® advanced code-hopping technology, a proven security technology used worldwide by leading manufacturers. For more info visit: www.microchip.com/get/K4KF
A Universal Direct Conversion Receiver For PSK-31
by John E. Post
Exclusive Online Article: Decode and read text message communications being sent over shortwave amateur radio frequencies. Page 0
Radio Locator Beacon For Flying Objects
by Dan Gravatt
Exclusive Online Article: The locator beacon weighs about an ounce with its 12-volt A23 alkaline battery, and could be made lighter with the use of surface-mount parts. It’s also simple and inexpensive, so you can afford to build another one if necessary. Page 0
Analog Mathematics
by Gerard Fonte
Even in the midst of the digital revolution, there's still a place for analog mathematics to streamline your designs. Page 54
Projects
Build the rCube: A Talking Memo Alarm Clock
Electronic Gadgets
by Dave Decker
This unique talking clock and MP3 speaker can record voice memos or your favorite song for your alarm, plus it's an interactive nightlight too! Page 40
How to Parallel Power Supplies for Higher Output
Electronic Gadgets
by Fernando Garcia
Assemble this power supply for higher performance from your class-D amplifier. Page 48
Columns
Techknowledgey
by Jeff Eckert
TechKnowledgey 2009
Topics covered include super charged lithium-ions, fuel cell buses, viewing Mars, plus other cool stuff. Page 12
Personal Robotics
The Saga of a Sonar Station
Follow the unique build experience of an interactive kiosk. Page 16
Getting Started With PICS
by Chuck Hellebuyck
Counting Pulses with Timer 0
Keep track of your distance traveled on the golf coarse with this counting application. Page 26
Q&A
by Russell Kincaid
Q&A
Analog tachometer, calulated inductance, soft start AC circuits, plus more. Page 32
Smiley’s Workshop
by Joe Pardue
Smiley’s Workshop: An AVR C Programming Series (Part 10)
Moving Beyond Arduino. Learn how to convert Arduino programs into regular C programs. Page 62
Stamp Applications
by Jon Williams
Spinning Up Embedded Control Projects
Get in touch with your Propeller side. Page 68
The Design Cycle
by Fred Eady
And Now, A Riff From Jeff Beck
Designing a wireless guitar. Page 74
Near Space
by L. Paul Verhage
Your Own Micro Datalogger
Build a bigger and more powerful flight computer. Page 80
Departments
Developing Perspectives
by Bryan Bergeron
Please visit our Developing Perspectives blog to read the full article and comment. Page 8
Have you ever thought that most of our perception about the robot is based on the Hollywood movie! The well-known 3CPO and R2D2 from Star Wars until the little cute garbage compacting robot named WALL-E; all of these machines are example of our dreams or should I say our quest to what we all think about the robot should be. Although the robot that we are going to build here is still far away from the technologies shown on those movies but at least it will give you an introductory to the robotics world. for more information please visit www.ermicro.com/blog/?p=983
Microchip Technology's low-cost, stand-alone MCP794XX Real-Time Clock/Calendar (RTCC) devices feature EEPROM & SRAM, unique ID, digital trimming and battery switchover for $0.70 each, in 10k-unit quantities.
Microchip Technology's RE46C165/6/7/8 photo smoke-detector ICs make it easy to quickly determine which detector in an interconnected loop triggered an alarm. The ICs’ low energy use enables smoke detectors with a battery life of 10 years, and an interconnect filter enables a connection to other devices, such as CO detectors.
Here's the result of carelessness when ordering microcontrollers (aka μCs, "μ" for "micro" and "C" for "controller). They, like other chips, are available in different sizes. Same silicon inside, but varying carriers. As you'd expect both the silicon and the packages have gotten smaller over the years, but the old larger packages are still available for many chips for compatibility with existing circuitry, and, well, I'm not sure why else.
So the other day I decided the prototyping of my Nixie tube watch was getting toward where I could start thinking about making some circuit boards, so I chose a suitably small form of the watch's microcontroller and ordered a few - I thought.
The chip at the top is in the classic Dual Inline Package (DIP). There's one like it wired up in my nixie watch prototype. Though fine for prototyping, this form of the chip is much too big to be used in an actual watch - even a big fat nixie watch.
The chip in the lower right is the size I meant to order - the Small Outline Integrated Circuit (SOIC). They're reasonably small, and I've soldered them into circuits successfully before.
I goofed up, though, and the little guy below Lincoln's nose is what I ended up with: the Micro Lead Frame Package (MLF). This one is lying on its back. It's a great size for use in a watch, but much teenier than anything I've attempted to solder before. That is, I've soldered stuff that is overall no bigger than that, but this chip needs 20 separate solder joints, 5 on each edge where the little light bits are. Those are half a millimeter apart - yikes!
But you know what? I think I'll give it a try, just to see if I can pull it off. With a bit of care and solder flux, a lot of magnification, and a super-duper fine point iron tip, I bet I can get it to work.
Microchip Technology's Power-Line Modem (PLM) PICtail™ Plus Daughter Board Development Kit (part # AC164142) enables customers to easily develop and field power-line communication in their products.
Microchip Technology's PIC32 “MX1” and “MX2” MCUs are the smallest and lowest-cost PIC32 microcontrollers, and are the first PIC32s to feature dedicated audio and capacitive-sensing peripherals.
Microchip Technology's PIC18F66K80 8-bit CAN microcontrollers (MCUs) feature1.8 – 5.5V operation and eXtreme Low Power (XLP) technology, for the industry’s lowest sleep current consumption of less than 20 nA. The MCUs feature an on-chip 12-bit Analog-to-Digital Converter (ADC) and a peripheral that enables mTouch™ capacitive touch-sensing user interfaces. They are ideal for applications in the automotive (e.g. body control modules, automotive lighting, door/seat/steering/window control, HVAC control), industrial (e.g. security systems, elevators and escalators) and medical (e.g. glucose meters, patient-monitoring devices) markets.
A small present for my girlfriend.
More infos at blog.gut-man.de/2009/11/08/kleine-aufmerksamkeit-fur-die-...
Connections from the main PCB to the LED interface board to provide ground, +5V and Level_OK signal. A pullup resistor has been added to PIC Microcontroller Pin 21