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28 Nov 2010

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]

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