<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I quite like the hand crank system, but it depends on what type of disaster we are anticipating.<div>Solar / wind works great if you’re holed up, the hand crank works great on the move - personally I’ve been working on a board that has ac/dc conversion, and whatever voltage you feed into it in whatever polarity, it charges the attached USB power bank.</div><div>This could be another option to allow people to clamp onto car batteries, power points, train reading lights (that was the inspiration for the idea) etc</div><div><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On 27 Feb 2020, at 00:19, Xavier Fiechter <xavierfiechter@gmail.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div>What about this design? <br><a href="https://www.thingiverse.com/thing:944461">https://www.thingiverse.com/thing:944461</a><br><br></div>We could combine the case for the ESP, the solar with the turbine directly.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 26, 2020 at 1:46 PM Richard Attenborough <<a href="mailto:rattenbo@gmail.com">rattenbo@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto">Folks,</div></div><div dir="auto"><br></div><div dir="auto">Solar is probably the best way to go anywhere south of the Arctic Circle but you may need to drastically increase the size of the solar panel to deal with areas with seasonally reduced sunlight. </div><div dir="auto"><br></div><div dir="auto">Richard.</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 26, 2020 at 6:26 AM Marc Juul <<a href="mailto:marc@juul.io" target="_blank">marc@juul.io</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 2/26/20, <a href="mailto:samuk@disroot.org" target="_blank">samuk@disroot.org</a> <<a href="mailto:samuk@disroot.org" target="_blank">samuk@disroot.org</a>> wrote:<br>
> I'd be tempted to look at Vertical Axis Wind Turbines (VAWT) as I think they<br>
> stand a better chance of surviving storms.<br>
<br>
They're certainly better than some of the simplistic traditional<br>
generators, however some traditional wind generators can be rotated<br>
out of the wind (or do so automatically if they're fancy) if speeds<br>
get too high where the vertical models have no way to slow down. I've<br>
seen people add centrifugal breaks to the vertical turbines so that<br>
could be an option.<br>
<br>
-- <br>
marc/juul<br>
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