Tags:

    Camping light, 12V, LED

    Not really amateur-radio related, but I used the electronic skills I've been learning to build it!

    This is a 12V DC lamp for our tent that we'll use while we're camping. It will also be useful in the car when I drop something small under the seat and have to find it!

    It draws less than 0.5A current and is too bright to look at. It uses 64 super-bright white LEDs (7000mcd each). I plan to use an Arduino to control it by sending a Pulse-Width-Modulated signal to the LEDs. This will allow me to turn them down when I don't need the full intensity (and therefore save even more battery life).

    I've attached a short video of it in action below...



    Ché (unauthenticated)Feb 4, 2010 8:35 PM

    Impressive. What time does that power use equate to?

    MacGeek AccountMar 16, 2010 9:48 AM

    That depends on the size of your battery! So, for example, when using the 7 amp-hour 12 volt sealed lead acid battery from my glider I'd get around 14 hours operation of the LED lamp at full brightness...