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Archive: Electronics
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December 5, 2006
Resistor calculator for LEDs
Nick writes -
"Here's great site that tells you the quantity and size of components you need depending on the number of led's you are planning on using, and what kind of series you are planning on putting them in; it even has an option to build the circuit layout for you based on what you need." - Link.
Related:
- The LED center - Link.
Posted by Phillip Torrone |
Dec 5, 2006 05:08 AM
DIY Projects, Electronics |
Permalink
| Comments (2)
MiniPOV light sensing hack
Kragen shows you how to mod the MiniPOV kit we carry in the MAKE store, this hack make the POV light sensitive... nice work!
"...I wanted to add some input to it, since a device that turns LEDs on and off without paying any attention to its environment is useful for only a fairly limited number of things. There's a technique described in Mitsubishi Electric Research Labs Technical Report 2003-035, "Very Low-Cost Sensing and Communication Using Bidirectional LEDs" for using a single LED to alternately emit and sense light. So I figured I'd make this modification to my minipov2." - Link.
Related:
- MiniPOV- An Inexpensive Persistence of Vision - A third generation of original MiniPOV, no microcontroller-programming device is needed, and the source code is in C not assembly. And it includes high quality PCBs and LEDs. The MiniPOV project as an ideal starting place for anyone who wants to: learn how to solder; learn how to assemble simple kits; learn how to program microcontrollers; and make blinky stuff - Link.
Posted by Phillip Torrone |
Dec 5, 2006 04:33 AM
DIY Projects, Electronics, Kits |
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| Comments (0)
Bluetooth to RCA - Poor man's Airtunes
Pillowcase writes -
"I had this bluetooth headset I got at goodwill for $5 and the battery was dead. Now its kinda useful as a bluetooth-rca bridge!" - Link.
This won't win any kudos for sound quality, but it's a great re-use of a tossed headset.
Related:
- Getting Your Bluetooth Headset to Work in XP - Link.
- Turn a brick cell phone into a Bluetooth headset - Link.
- DIY Banana phone - Link.
From the page of MAKE:
- Pairing a Bluetooth Headset with a Mac. Using a wireless headset with Apple's iChat AV isn't as easy as you might think. MAKE 01 - Page 136. Subscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Dec 5, 2006 03:07 AM
DIY Projects, Electronics, Home Entertainment |
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| Comments (0)
December 4, 2006
5V stabilised supply for USB hub
Neelandan writes -
"This is a stabilised supply intended to be used with a bus powered USB hub in order to deliver a stabilised + 5 volt supply to the devices connected to it.
Due to the resistance of the connecting cable, and the resistances introduced for current sensing for overcurrent protection, the voltage at the hub can be anywhere between +4.5 V(loaded) and +5.5 V. This circuit will deliver a stabilized +5 V in both the cases, ie, it is a buck/boost design, using the TPS63000 switch mode regulator chip manufactured by Texas Instruments.
It can deliver +5 V at 500 mA from input voltages as low as 2 Volts so a rechargeable battery and its (USB powered) charger can be added to make this into a USB UPS for the USB hub." - Link.
If you like this style of electronics, check out Neelandan's other projects too...
Posted by Phillip Torrone |
Dec 4, 2006 07:09 PM
DIY Projects, Electronics |
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| Comments (0)
Rancilio Silvia "PID PIC NES" mod - NES controlled espresso machine
Tim writes -
"Hi, I have been working for the last couple years on my own version of the Rancilio Silvia mod documented in the excellent Make 4...
...a PIC 16F876 microcontroller brain, a 20 character VFD display, nintendo controller, three zero-crossing solid state relays, IC thermometer, laser cut acrylic top, cold cathode ground effects and shot light. This project has stretched out for quite some time, and will likely continue on as I pick away at it some more. But for now, the bulk of the first wave of coolness is complete...." - Link.
Posted by Phillip Torrone |
Dec 4, 2006 12:25 PM
DIY Projects, Electronics |
Permalink
| Comments (1)
HOW TO - Atari style joystick/controller to USB adapter
Raphael sent in this rad Atari style joystick/controller to USB adapter -
"When playing games from the 8bit computer era, I believe that gameplay is better using a real joystick from the time. It's more fun :)
Many people like me have been happy doing this with simple homebuilt parallel port adapters for years but unfortunately, parallel ports are becoming less common these days (Some computers dont have any parallel ports!). Most modern game controllers uses USB so that's why I designed an Atari style joystick to USB adapter." - Link.
Related:
- SNES/NES gamepad (and mouse) to USB adapter - Link.
Posted by Phillip Torrone |
Dec 4, 2006 11:23 AM
DIY Projects, Electronics |
Permalink
| Comments (0)
HOW TO - $10 XY Laser scanner
Hubert writes -
"The goal is to build a very low cost X Y scanner for a laser pointer, this X Y scanner must be able, from a PC, to display fixed or animated simple pictures or some characters.
Problem is, of course, to build very fast actuators. Ultra fast galvo are very expensive..." [via] - Lasers & scanner.
Posted by Phillip Torrone |
Dec 4, 2006 09:15 AM
DIY Projects, Electronics |
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| Comments (0)
The first digital voltmeters and the birth of test automation
History of HP's DVM (digital voltmeter), there first ones sold for $2,300 (1953) and now you can get them for $5! -
"It may seem odd dedicating a page of this computer-oriented Web site to digital voltmeters, but digital instrumentation played a key role in the success of the HP 9825 desktop computer. The HP 9825 represented a real breakthrough in instrumentation control. Without digital instrumentation, there would have been nothing to control and the HP 9825 would not have succeeded half as well as it did.
Although Hewlett-Packard, which was founded as an instrumentation company, achieved many firsts in the test and measurement industry, the digital voltmeter (DVM) was not one of these firsts. Not by a long shot. In fact, HP got behind the differential voltmeter, an analog instrument eventually obsoleted by the DVM. HP didn't enter the DVM market until 1958, but that's getting ahead of this story." - Link.
Related:
- Single-digit Nixie, Oscilloscope CRT a Weston ... - Link.
Posted by Phillip Torrone |
Dec 4, 2006 06:04 AM
Electronics |
Permalink
| Comments (0)
Single-handed wireless Xbox 360 controller
Jeez, Ben Heck is on a roll lately, he just made a one-handed Xbox controller, he writes -
"One of the biggest challenges, at least in the brainstorming "how I am going to do this?" phase was how to do the right analog stick. Then I realized I could just put it on the bottom of the controller and reverse its wiring. You don't actually tilt the controller on the axis of the stick because that would be awkward. (Believe me, I tried) Instead you actually just move the whole thing in the direction you want for the right stick, and the analog stick then rotates against your leg. This is why you have to reverse the wiring, because the use of the stick itself has been reversed." [via] - Link.
Related:
- Interview with Ben Heck - Console Hacker Extraordinaire - Link.
- Atari Jaguar - the portable version - Link.
- Homemade Atari 800 XE Laptop... - Link.
- Pancake-like VCSp - Portable 2600 - Link.
- nPod - NES portable - Link.
- Homemade Neo Geo MVS Portable - Link.
- NES "micro" - Link.
Posted by Phillip Torrone |
Dec 4, 2006 03:57 AM
DIY Projects, Electronics, Gaming |
Permalink
| Comments (1)
HOW TO - Running homebrew and emulators on the Wii and more Wii hacks...
Here's the start of running homebrew games/apps and more on the Wii - all you need is a SD GameCube adapter, GameCube Action Replay pack a long ole' code to bang in... [via] - Link.
Related Wii projects, hacks, mods and more:
- Making (Practical) Wii Component Cables - Link.
- Wii Browser "Hack" (updated) - Link.
- HOW TO - Make your own wireless Wii sensor bar! - Link.
- Hacking guide to the Wii GiftCard - Link.
- Wii gutted and gadget guts roundup - Link.
One more... WiinRemote a program for moving cursor using Wii Remote on Windows PC (reading 3-axis linear accelerometer's value) - Link.
Posted by Phillip Torrone |
Dec 4, 2006 12:54 AM
DIY Projects, Electronics, Gaming |
Permalink
| Comments (0)
December 3, 2006
HOW TO - Watercooling a laptop on the cheap
MAKE Flickr photo pool member nearlynormal007 shows you how to watercool a laptop on the cheap!...or pretty much anything - "" - Link & photos.
Related:
- A silent water cooled PC made with parts from Home Depot - Link.
- Ford Festiva radiator water cools PC! - Link.
- Watercooled Xbox 360 - Link.
- Fully internal watercooled Xbox 360 - Link.
Posted by Phillip Torrone |
Dec 3, 2006 06:48 AM
Computers, DIY Projects, Electronics |
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| Comments (0)
HOW TO - Mic stereo / little amp in a pencil box
llaven writes -
"Mic stereo with little amp in a pencil box, i build this for my project http://www.archivosonoro.org is a non-profit project about the Soundscapes and Field recordings. This box use with a MD-510n Minidisc recorder with Analogical IN. Happy build!!!" - Link.
Related:
- Bownie's DIY Guide to Recording - Link.
- Build a Telephone Recording Circuit from an Old Modem - Link.
- Portable Recording Alternatives... - Link.
- HOW TO - CD quality field recording rig - Link.
- Homemade high quality Minidisc recording interface - Link.
Posted by Phillip Torrone |
Dec 3, 2006 02:20 AM
DIY Projects, Electronics, Music |
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| Comments (0)
December 1, 2006
LEGO Mindstorms NXT and open source (updated)
DGary - points to the updated LEGO NXT developer page -
Software Developer Kit (SDK)
Includes the NXT driver interface specification and necessary tools for creating third-party programming environments:
Driver SDK
Includes documentation for interfacing with the MINDSTORMS NXT driver on the PC or Mac.
Executable File and Bytecode Reference
Includes documentation for the executable file format on the NXT. This document also describes how the NXT firmware's virtual machine (VM) executes the files.
Hardware Developer Kit (HDK)
Includes documentation and schematics for the NXT and related sensors. The documentation enables you to design and develop your own sensors and actuators that can interact with and control the NXT through the various digital and analog interfaces.
Bluetooth Developer Kit (BDK)
Documents the communications protocols to the intelligent NXT brick, enabling you to create applications for various Bluetooth devices to communicate with MINDSTORMS NXT robots.
LEGO Mindstorms NXT developer page - Link.
Related:
- LEGO Mindstorms NXT and open source - Link.
- LEGO Mindstorms NXT - Link.
- LEGO projects - Link.
- Open source gift guide @ MAKE - Link.
Posted by Phillip Torrone |
Dec 1, 2006 08:10 PM
DIY Projects, Electronics, LEGO, Toys and Games |
Permalink
| Comments (0)
November 30, 2006
Quick Computer Controlled Xmas Lights
Check this out and then go check out the voice controlled christmas lights they made up! Well I've seen many "static" Christmas lights that always stay on. Today, I will show you how you can customize your Christmas lights by using a PLC, a Programmable Logic Controller. - Link
Posted by Bre Pettis |
Nov 30, 2006 05:11 PM
Electronics |
Permalink
| Comments (4)
LED Popsicle stick picture frame
This LED-enhanced popsicle stick picture frame is a great project/gift to do with the kids - Link.
Related:
Posted by Phillip Torrone |
Nov 30, 2006 01:48 PM
Crafts, DIY Projects, Electronics |
Permalink
| Comments (0)
November 29, 2006
6-pack - Arduino-based controller for live audio/video performances
Here's an arduino-based controller for live audio/video performances. Cheap to build and amazingly small...
"6-pack is an open-ended, highly customisable, and ultra-portable physical controller based on the Arduino board. 6-pack is an Arduino shield consisting of 6 linear potentiometer sliders that can be assigned to different variables in the user's preferred software. It can be used to control a wide array of audio/video applications, from software synthesizers to HDJ systems. All, with a minimal footprint (3,5" x 2,5") and on the cheap (just a fraction of the cost of an equivalent MIDI interface). The project is open source. Schematics and source code included." Thanks Will! - Link.
Related:
- Chatter Pillow - Adium, PHP, Arduino, LEDs... wireless ... - Link.
- Arduino stamp & evaluation board for MSP430F417 - Link.
- Arduino, the Basic Stamp killer? - Link.
- Arduino Fever - PDF preview - Link.
From the pages of MAKE:
- Arduino Fever - The tale of a cute, blue microcontroller that fits nicely in the palm of your hand, and the expanding community of developers who love and support it. MAKE 07 - Page 58. Subscribers--read this article now in your digital edition.
Posted by Phillip Torrone |
Nov 29, 2006 04:56 PM
DIY Projects, Electronics, Music |
Permalink
| Comments (1)
HOW TO - DIY open source Holga MP3 player
Joe writes -
"Hey Phil - I got the MAKE open source MP3 player kit and let me say I am impressed. I put it in an old Holga and its pretty rad. I am really impressed by the sound quality. On par with my ipod without a doubt. I am going to take it apart though. I'd like to make a case for it that looks like an old 1950s radio. Then use a BS2 plus PINK to control it via the web. And last use a tube amp for that 50s feel. That's going to take a bit of time cause I have to order a tube amp kit." - Link.
Related:
Posted by Phillip Torrone |
Nov 29, 2006 04:38 AM
DIY Projects, Electronics |
Permalink
| Comments (0)
HOW TO - Consolize an arcade game
Benjamin Heckendorn shows you how to turn old arcade games into consoles to plug in to your TV, he writes -
"In this How-To we're going to describe the method by which you can take old arcade motherboards, easily attainable on eBay, and "consolize" them for use with a standard TV and controllers. Many people are satisfied with emulators such as MAME, and while they're become better and even more legal (thanks to the recent "abandonware" legislation) you still can't beat the real deal. Certain arcade machines, such as the Neo-Geo, are great choices for this project because you can actually plug new games into the hardware using the cheap and plentiful "MVS Cartridges." - Link.
Related:
- Interview with Ben Heck - Console Hacker Extraordinaire - Link.
- Atari Jaguar - the portable version - Link.
- Homemade Atari 800 XE Laptop... - Link.
- Pancake-like VCSp - Portable 2600 - Link.
- What to do with free game gear? - Link.
- nPod - NES portable - Link.
- Homemade Neo Geo MVS Portable - Link.
- NES "micro" - Link.
From the pages of MAKE:
- You can swing a slightly different way and put a PC inside an Atari, and run MAME... After fitting a full-featured wireless PC system into an old Atari 2600 case, you can watch movies, surf the web, and play hundreds of retro games. Subscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Nov 29, 2006 12:52 AM
DIY Projects, Electronics, Gaming |
Permalink
| Comments (0)
November 28, 2006
New in Roomba hacking...
Tod posted some new Roomba projects and updates from his book Hacking Roomba -
- Awesome new Roomba hack by Isobot - Link.
- Updates/Errata page created for Tod's Roomba Hacking book - Link.
- Roomba prototyping plug for Arduino - Link.
Related:
- Hacking Roomba book now available - Link.
- HOW TO - Make a Roomba Serial Interface - Link.
- HOW TO - Roomba Bluetooth Interface - Link.
Posted by Phillip Torrone |
Nov 28, 2006 04:49 PM
DIY Projects, Electronics, Robotics |
Permalink
| Comments (0)
A smoked turkey with an IP address...
This is worth making turkey again just to tinker with this, Bbum writes -
"...I recently purchased a Stoker BBQ controller. It included 3 food probes, a cooking grid probe, fan, and computer controller that can be programmed to maintain a particular temperature within the Egg.
The device is amazing. I used it earlier in the week to do a 17 hour cook of a pork leg. The Stoker maintained temperature within a few degrees of 210 for all 17 hours without a problem. Awesome.
The best part is that the Stoker will happily grab an IP address via DHCP if you plug an ethernet cable between it and your home net. You can subsequently control target temperatures, high/low alarms, food alarms and other parameters remotely." - Link.
Related:
Posted by Phillip Torrone |
Nov 28, 2006 03:50 PM
DIY Projects, Electronics |
Permalink
| Comments (2)
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