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  1. N

    Quick solar question

    I have a Solarlink FR360 (http://www.rei.com/product/791889?preferredSku=7918890018&cm_mmc=cse_froogle-_-datafeed-_-product-_-7918890018&mr:trackingCode=83DA1FE9-B299-DE11-93DB-0019B9C043EB&mr:referralID=NA) It apparently takes 10hrs!!! to charge a 3.6v 600mAh battery using the built in...
  2. N

    Need Advice on a 10x1W LED Strobe Project

    I would like to make a 1-20Hz strobe light using ten 1W 80 Lumen LEDs. They have a typical Vf of 3.2V when driven at 300mA. I will be using a 10v source, and 5x LM317/Resistor regulators, each driving 2 of the LEDs in series. The regulators take the 10v source and match it to the required Vf...
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    iPod Speaker Mod. 6v or 9v? Need advice

    I want to power an iPod speaker (Altec Lansing inMotion) using an external battery because at full blast, it burns through 4AA batteries in ~15 minutes. This is annoying, because I have to keep changing the batteries, and AA batteries aren't cheap. The way it came, it uses 4, 1.5v AA...
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