Solar Powered Linksys WRT54g Router w DD-wrt and HotSpotSystem

I have built a solar powered Linksys WRT54g router setup.

1. WRT54g router 12v 1a with DDwrt v24 and HotSpotSystem.com ($20 ebay)
2. 10amp solar charger controller 12v ($10 ebay)
3. 2x 10watt solar panels 12v ($22 each ebay)
4. 1.4 Ah 12v battery ($16 Frys)
5. 20dB gain Yagi directional antenna ($10 ebay)
6. Reverse RP-TNC male to RP-SMA female adapter ($2 ebay)
7. (will purchase waterproof box) $10 or similar

 

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RESULTS:
Works perfectly but needs a bigger battery. The 1.4Ah 12v sealed battery only lasts about 2 hours when the charge stops. I read somewhere that a 7.2Ah battery should work, which makes sense if I want to get roughly 7x more power time (if 1.4Ah=2hours then 7.2Ah should equal about 10 hours…)

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The solar charge controller is awesome! Each panel puts out about 15-18v in medium cloudy sunlight at about 0.6amps each. The controller charges the battery to about 13.8v, then automatically switches to a float charge to about 14.1v. After full charge I could disconnect 1 panel and still maintain power to the router and a positive charge to the battery.

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The panels are chinese 10Watt models from ebay. They seem to be pretty good, as it does not take much sunlight to generate 12-14v (in the medium shade). They will easily produce 18v each in full direct sunlight.

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The Yagi is a 20 or 24 dB gain directional with a 30 degree cone spread signal. Haven’t done any testing as I am still in crutches after knee surgery and don’t want to go across the street and walk around.

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Update:

Here is the 7.5 AH 12volt battery installed. The unit will power the WRT54G router for well over 8 hours. I put the whole thing in a waterproof box, however I am planning on drilling some holes for PVC pipes to vent and to affix the antennas to.

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I found this cool Solar Powered Brewery bottlecap and decided it was perfect for a heatsink. So I glued it onto the main Broadcom chip for some heat dispersion.

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Bottlecap heatsink on WRT54G router.

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Installed in waterproof box. Must provide ventilation. Using stock antennas until the RP-TNC and RP-BNC adapters come in the mail.

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Setup in action on a sunny day.

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UPDATE:

I have put together an Arduino Solar Panel Sun Tracker. Check out the code and project page!

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Torn MCL and ACL + Surgery

On January 20th 2013 I was injured riding dirt bikes and torn my right knee MCL and ACL in the Cajon Pass Trestles / Baldy Mesa OHV.

gman_hillclimbevan 

I was following my brother Evan and his friend Scott Royce on some sick trails about 10 miles out from base camp.  Doing about 30+, I came around a corner and faced a dire situation.  My brother had stopped abruptly so as not to fly off a medium sized 10 ft cliff.  I had a choice, either run straight into him and crash us both, or ditch the bike and take one for the team.  Even though I had about a half a second to make a decision before impact, I am glad I avoided colliding with the other rider and hurting us both.

I had surgery on Jan 30th at the Laguna Hills Surgery Center.  My doctor was the excellent Scott Graham.

It has been over a week now and I am healing well. The medication is helping lol…

brace