Here is the simple solution to make an automatic solar powered led lamp. It automatically switches on two high power White LEDs in the evening and stays on for 6 hours using a 6 volt 4.5 Ah ...
This close-up through the polycarbonate shows the absorber screen, the foam sealer molding, screws with EPDM washers, battens and a bottom vent. After walking into my workshop one December morning and ...
Dear Jim: We have teenage daughters who take long showers. Our water heating costs are sky-high. We are on a tight budget, but want to use some solar water heating. Is there a system we can make ...
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