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Red Light for Astronomy Observing
Written by admin   
Thursday, 02 June 2011 00:00

Authors: admin


This project shows how to build a red light suitable for reading astronomy charts while preserving eye night vision. It is based on PIC 12F683 microcontroller and brightness can be adjusted anywhere between comfortably bright and almost invisible with 128 steps of adjustment. Also there is a button for temporary brightness boost. The light consists of two parts – an old desk lamp with a patch of LCDs in place of the bulb, that is connected through an audio jack to a old mouse containing the controller and the battery.

Red Light for Astronomy Observing –[Link]

Last Updated on Thursday, 02 June 2011 00:20
 
LED-in-resin – LED Bulb Casting
Written by admin   
Thursday, 02 June 2011 00:00

Authors: admin


Take one blown pygmy bulb from the fridge. Make a mold from it in silicon, cast a clear resin version with an LED inside and your LED-in-resin lamp is ready. Product is shown on photo above. 

LED-in-resin – LED Bulb Casting - [via]

Last Updated on Wednesday, 01 June 2011 23:09
 
Rocket built in 10 Minutes
Written by admin   
Thursday, 02 June 2011 00:00

Authors: admin


rocket

Using some household items, a simple and ultra light rocket can be created although this could be dangerous especially when in reach of children. With the help of a playing card, the flight of the rocket can be guided although it is difficult to position the fins evenly around the rocket. The launch ...

Read more: [VIA]

Last Updated on Thursday, 02 June 2011 00:13
 
Low Cost Bili-Light Radiometer
Written by Administrator   
Friday, 27 May 2011 00:00

GJNusz writes:

The objective of this instructable is the production of a low-cost, easy to use, low-maintenance device for measuring the efficacy of phototherapy lights bili-lights for the treatment of hyperbilirubinemia (jaundice). The purpose of this device is to measure the output of phototherapy units and to ensure that the emitted light is intense enough (>4uW/cm2/nm) within the correct wavelength range (425 – 475nm).

Low Cost Bili-Light Radiometer –[Link]

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Last Updated on Friday, 27 May 2011 01:50
 
DIY Fabric Speakers
Written by Administrator   
Thursday, 26 May 2011 00:00


Hannah Perner-Wilson has been experimenting with making speakers out of paper, using conductive tape and strong magnets. I look forward to clearing up more desk space by hanging something no thinker then a framed picture. 

DIY Fabric Speakers – [via]

Last Updated on Thursday, 26 May 2011 00:14
 
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