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Photo taken to accompany short article on working with AVR microcontrollers, and making minimalist target boards for programming them.
My first look at the circuitry of the YN-460 flash.
This is the microcontroller board and keypad.
This is going to be soooo easy to hack!
BTW thanks TC. for being the first to risk it!
PS see this discussion for more info
Driving a stepper motor that was salvaged from an old Epson ink-jet printer with an Allegro A3982 chip. It's basically the same design as the MIT Machines That Make driver PCB: makeyourbot.org/a3982-1-0
PACK, Daniel J.; BARRETT, Steven Frank. Microcontroller Theory and Applications: HC12 and S12. 2 ed. Upper Saddle River: Pearson Prentice Hall, 2008. xiv, 631 p. ISBN 0136152058. Inclui bibliografia e Ãndice; il. tab. quad.; 24x16cm.
Palavras-chave: MICROPROCESSADORES; MICROELETRONICA.
CDU 621.3.049.77 / P119m / 2 ed. / 2008
Hacking a digital bathroom scale to use as a general-purpose weight sensor or input device.
Explained in more detail at:
This is my own version of the "weather picture"
The original microcontrollers are replaced by Arduino's with my own software, enabling me to display much more data. The only thing reused are the 7 segment displays.
For example:
- On the left middle and top display's, the Beaufort and km/h value are visible simultaneously.
- Also with the limited possibilities of 7 segment displays, the wind direction is shown in character format. It's amazing how fast I was used to this. 55u is immediately recognised as SSW
- Now, on one display I can show as many values as I want with a selectable delay between the values.
- The most useful addition for me is the 5 minute average wind direction (low left display).
- on the lower right display you see a few LED's. They indicate the barometric rise or fall and how fast it's going up or down.
A small project I did, using a Playstation 2 controller and Arduino to control the speed and direction of a bipolar stepper motor.
More information and source code: www.lungstruck.com/projects/ps2-motor-controller/
As the electronics hobbyist one of knowledge that we have to be familiar with is how to make our own printed circuit board (PCB). Making our own simple single side PCB actually is not require a sophisticated technique and technology as you might think, instead most of the required materials is already available at your home. For more information please visit www.ermicro.com/blog/?p=1526
I'm starting to feel the inclination to get back into electronics hobbyism these days - and on the photography side that means closeup / macro shots will be coming along soon.
The fever hits me now and then to make some LEDs blink, and the way I generally do that is to write software for a microcontroller (MCU) - a tiny, cheap, single-chip computer - to do it.
Why bother? You might well ask. Well! MCUs form the heart of all sorts of nifty circuitry - anything that isn't actually a computer and yet is "computerized", which is pretty much everything, anymore. I plan to make fun simple things like clocks and little games and decorative blinky lights, but stuff like homemade MP3 players, GPS units, simple autonomous robots, and Web-based remote control devices are now well within the reach of hobbyist designers. All you have to do is get specialized circuitry to handle the GPS reception or MP3 decoding or time displaying, then plunk a MCU down to order it around according to directions specified by software you write.
These three circuits pictured are all "programmers", or interface devices that let you send MCU software from the PC where you wrote it to the actual MCU chip. These are all for the PIC family of chips manufactured by Microchip, Inc.
In the upper left, the venerable PIC-1a from 1996, a small-scale-commercial variant of a famous programmer invented in April 1994 by a hobbyist named David Tait. The "Tait Classic" circuit, as it came to be known, was intended only for one kind of PIC MCU, the surprisingly useful 16C84. It had space for a 1024-instruction program and 36 bytes of data RAM. Much, much more powerful MCUs are available these days for less than the old C84 cost, but it was a great little chip. The Tait programmer made hobbyist MCU programming affordable, I believe; until recently the professional-grade tools for it were very pricey by hobbyist terms. The Tait Classic could be built for a few dollars or ordered pre-assembled from a cottage industry sort of shop like I did for, IIRC, about $50.
In the upper right, a cottage-commercial version of the P16Pro40, which is basically a newer and more flexible version of the Tait Classic, able to handle several different chips. I think I got this one in about 2004.
These two both still work, as far as I know, but they connect to the PC through the parallel port - and modern PCs don't often have parallel ports! Certainly the little netbook I use now doesn't. Hence, my decision to buy the programmer in the bottom of the shot, the Pickit 3. It's a USB-based programmer made by Microchip itself, and it has several features the Tait-types don't - plus it's fairly cheap, as things like this now are (about $70 for the "deluxe" version of the Pickit 3).
Nifty, eh?
DIY parts kit for building a micro-readerboard LED christmas tree ornament.
Read more about our holiday electronics projects here.
Photo taken to accompany short article on working with AVR microcontrollers, and making minimalist target boards for programming them.
On the left, original, working, RC & cassette based retro Omnibot. His only upgrade is a new NiMH power pack. He has a broken hand which I still need to sort out.
On the right, enhanced semi-autonomous Omnibot with his new brain and power shoulders & elbows. I've installed a 6th toggle switch to enable separate switching of power supplies to the servo sequencers and UNO stack. Amongst other benefits, this reduces the likelihood of him making a dash for it half way through programming...!
The advanced microcontroller circuitry inside the MidiWing musical instrument can calculate the many different frequencies or pitches that produce complex musical sounds from the position of a joystick, mouse or other input.
Photo by Randy Montoya
Read more at share.sandia.gov/news/resources/news_releases/midiwing/
Monitoring heating milk during yogurt making with Arduino microcontroller, LCD, buzzer and thermocouple. More information on this project on my blog, Mental Masala.
A DIY mini-LED menorah for hanukkah.
Read more about our holiday electronics projects here.
(We have Kits, too.)
Assembled from a kit, for programming a wide range of "PIC" microcontrollers.
Designed to be connected to a Windows PC via a "real" RS232 connection, though there is an ICSP (In Circuit Serial Programming) header which increases its flexibility, allowing it to be used directly with a device such as the Microchip PicKit series.
Provides rudimentary test functions in the form of input switches and output LEDs
This is a binary clock that was built into a 3d-printed case created in Minecraft. It shows the current time in a binary coded decimal format.
The model was exported with the free tool Mineways and printed on a Zprinter 650 3d-printer, with a block size of 125mm^3 (so every block has an edge length of 5mm). After printing, LEDs were glued into the case after filing the openings a bit wider. Then, the LEDs were soldered to form a 4x4 LED matrix, and the matrix was connected to an Arduino board.
A technical description of the setup as well as downloads of the model and the code can be found here: postapocalypticresearchinstitute.wordpress.com/2012/07/18...
Insect robot build after the description in Oreilly Make Arduino Bots and GadgetsDetails: On the back of the insect is the Arduino MC board powered by a 9V battery on the rear end ;-)
Video of V 0.0.1.2 here: www.youtube.com/watch?v=UHLnzWc7X3I
More pictures and another video here: xinchejian.com/2011/04/11/insect-robot-from-lumi/
Programming an AVR using an absolute minimalist target board.
Testing out the USBtinyISP AVR programmer from Adafruit Industries.
Read more here.
[img]http://blake-foster.com/projects/remote_startup_connected.jpg[/img]
Frequently, while at the office or out of town, I find (to my dismay) that I need to access files on my desktop computer at home. The inevitable results are special trips and wasted time. While I could leave my desktop on indefinitely and access files remotely as, the inordinate amount of electricity that it consumes literally doubles my electric bill. With the help of an Arduino, I've solved the problem for good, for the cost of about 3 months of running my desktop all day.
Read more here: blake-foster.com/project.php?p=44
Pixel VGA, version 1 (Floor Cluster) - Garnet Hertz
Two dozen old computer monitors occupy the center of a gallery floor in a cluster facing the wall. Each screen is controlled with custom electronics to create pulsating and strobing patterns, casting a colored wash across the darkened gallery.
Dimensions: Variable (approx 3m x 3m). VGA monitors, custom electronics. 2011.
More project information: conceptlab.com/pixel/
I hacked a power switch into my programmer instead of the silly little jumper that I lost about 5 minutes after receiving the kit. The switch turns on/off power to the chip being programmed.
With it on, the programmer can be used as a low-current power supply to, say, a chip in a prototype board. Or with it off, the programmer can be used to reprogram a chip in a fully powered, production, environment.
Homemade using an Addressable RGB LED Light Strip and Microcontroller Board
See my YouTube video showing all of my current Light Painting Tools and how they work.
www.youtube.com/user/michaelrross1
You can find get to the detailed tutorial information and videos to make this tool yourself on my personal website under the new Tutorial Blog at:
The setup on my desk for testing and developing the firmware and Verilog for my FPGA-accelerated vision platform.
Pictured:
- my MT9V032 LVDS camera board
- a Xilinx Spartan-6 FPGA SP605 board.
As of this photo, I've successfully developed the code that allows the Spartan-6 to deserialize the MT9V032's 300+ Mbps LVDS data stream - I use the FPGA's SerDes blocks to perform the deserialization, rather than relying on an external deserializer chip (as suggested in the image sensor's data sheet).
That little green LED on the FMC-LPC board (should you actually be able to see it) indicates that the FPGA has successfully locked to the MT9V032's output. Remarkably, it worked on the first try (no doubt thanks to simulating everything beforehand! - some simulation waveforms are just barely visible on my monitor in the upper right).
Next step: actually sending the video data somewhere to confirm that the sensor is really truly working (good thing the SP605 has a DVI output..).
Insect robot build after the description in Oreilly Make Arduino Bots and Gadgets
Detail: Just a quick working model hold together with tape velcro and cable binders ;-) Big eyes wrking with ultra sonic to measure the distance to avoid obstacles.
Video of V 0.0.1.2 here: www.youtube.com/watch?v=UHLnzWc7X3I
More pictures and another video here: xinchejian.com/2011/04/11/insect-robot-from-lumi/
The Atmel AVRISP MkII USB programmer, one of the popular, low-cost variety.
Photo taken to accompany short article on working with AVR microcontrollers, and making minimalist target boards for programming them.