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DIY PC Ambilight
Written by Hacked Gadgets   
Thursday, 15 September 2011 00:00

Authors: Hacked Gadgets


If you love the look of the Philips Ambilight system but would like to build your own? Have a look at this DIY Ambilight system that Instructables user Yonsje built. The biggest limitation it has is that it is for use with your computer and not a TV. These days this might not be much of a limitation though since many of us watch most of their video content on a computer system anyway, as I type this I am watching Security Now on a computer monitor to my right.

Thanks for sending this in Yonsj.

You will need:
- An arduino
- 3x 2k2 resistors
- 3x an NPN transistor, capable of switching 12Volts (I will be using a 2SD1062)
- A 12Volt adapter (wall wart)
- A barrel jack
- A 12Volt RGB (common anode) LED Strip (I will be using this one)
- Header pins
- Some prototyping board (I will be using some perfboard)

DIY PC Ambilight



Last Updated on Thursday, 15 September 2011 01:09
Make a Custom Form-Fitting Case for Your Tools or Precious Gear with Foam Filler [DIY]
Written by life hacker   
Thursday, 01 September 2011 08:00

Authors: life hacker

Make a Custom Form-Fitting Case for Your Tools or Precious Gear with Foam Filler [DIY]

Cheap foam filler is normally used to fill gaps in homes for weather-proofing and insulation. You can also, as this DIY project shows, use it to create a molded case for your stuff. 

Read more:

Last Updated on Thursday, 01 September 2011 18:38
Prototyping the Stepper Driver
Written by Administrator   
Thursday, 11 August 2011 00:00

Shawn Wallace writes:

The goal for this week is to prototype the driver circuit for the two stepper motors. Check out the Make It Last Build Series landing page for full info, prize details, and info about the first two builds in the series.

Prototyping the Stepper Driver –[Link]


Last Updated on Thursday, 11 August 2011 01:33
Lightweight Headlamp from Cheap, Readily Available Parts
Written by Instructables   
Saturday, 06 August 2011 16:03


Night skiing is really popular where I live, and while the ski resorts are adequately lit on piste at night, they are, obviously, not lit in the trees. Well, just because I can't manage to get to the resort during the day doesn't mean I shouldn't be able to enjoy a little tree skiing. Most commercial headlamps contain at least one if not more deal breaking issues, prohibitive pricing being one of those deal breakers. Home built headlamps can be really good, but often the designs I see online require the use of a lot of tools and ample shop space. Some of us are liberal arts majors who spend all our meager income on lift tickets and/or can't manage to hold on to one job long enough to afford to live in a house with a shop.

I don't have access to a CNC machine, a shop, or fancy tools, so I set out to design a headlamp that could be built in a spare bedroom of an apartment out of readily available parts that didn't require exotic tools or materials. Everything is available online and at either a good hardware store or a hobby shop.

The other considerations I had in mind are size, water resistance, and the ability to pocket the battery pack. The light runs off an inline resistor rather than an electronic driver so the input voltage can be 4.2 volts, which is the output of 4 rechargeable AA batteries. This is important because we skiers have to keep our batteries in our pocket so they stay warm, which means they have to be in a small enough package to fit inside a ski jacket pocket alongside snacks and a cell phone without making the skier look like a conspicuous shop lifter.

I also wanted the cabling to be cheap, detachable, and intrinsically strain relieved. That meant using RCA plugs for the power connectors so I could just use audio cables for the interconnects. This also obviated the need for a switch as I can just disconnect the cable when I want to turn the lamp off.

The whole assembly needed to not cannibalize straps and stuff from other headlamps. This meant I had to come up with a helmet mount that tilts as well. On top of tilting, it also needed be adjustable with gloved hands and able to be locked in place once at a satisfactory angle. I kind of like my solution, which is to utilize big ol' brass wing nuts and brass machine screws.


Last Updated on Sunday, 21 August 2011 01:37
1.2 kA motor driver circuit based on the PIC16F877
Written by Dangerus Prototypes   
Saturday, 06 August 2011 02:14

Authors: Dangerous Prototypes

rsdio writes: This thing puts out so much torque that it has to be run at 3/4 power to avoid slipping the clutch!

Features: Programmable current limit 100-1200 motor amps, automatic over-temperature current limit cut-back, water-cooled copper heat sink, low-loss IGBT modules, and motor overspeed limit.

Processor: Microchip PIC 16F877 This small yet powerful microcontroller runs at 5 MIPS and 20MHz with 8kb of onboard program FLASH memory. It also has two onboard 10-bit PWM generators, eight 10-bit ADC channels, and a UART interface.

Via the Dangerous Prototypes forum.

Last Updated on Sunday, 07 August 2011 23:14
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