AmosLightnin

@mark No man it's all good! I know the SoMe train ain't one we should ride everyday. :)
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When using a powerpack and a solar panel, overall speed is slower but it's no longer sensitive to panel shading (in the short term), since it has a capacitor full of juice.
A cable crawler traverses the backyard Zipline.
Solar panel in full sun into 5F powerpack. Slow start but less sensitive to shading on the panel.
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Virtual Reality in the 1800s :thinkerguns:

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Celeste @Cemocreates 2023-02-16 20:13

More photochromic pigment fun. I love how layering the “exposures” creates interesting patterns. This is just photochromic pigment plus white glue, painted onto paper, and a uv pen light.

When we're reading before bed the kids like to lie under the suspended table.
Today we set up an outside course for children to make solar powered cable crawlers.
Solar cable crawlers workshop today at Dokk1. http://playingwiththesun.org
Today two kids made this ingenious weighted cantilever designed to hold the solar panels perpendicular to the sunlight. http://playingwiththesun.org
In today's workshop a kid had the idea to charge 6 power packs to see if their cable crawler would make it to the top. A concrete experience of the tradeoff between power to weight ratios.
Henrik did a first pass at a charging station base for 3 watt panels. Good start! Needs lower angle stability and some xt30 strain relief.
Initial experiments in cable crawlers activity design: The pin pokes a balloon.
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👋 Hi! I’m Luigi. I’m an educator, tinkerer, and activity designer for the Tinkering Studio at the Exploratorium. I try to create educative experiences that reject scarcity paradigms and instead center joy, belonging, agency, and relationships for learners.

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@jpf Cool! I think the kid did too, but it's difficult to know or measure. Such is the struggle with tinkering / project based ed. :)
@jpf Nope! Parallel means it gets the same voltage. It just ran for a very long time.
Workshops with kids often result in previously inconceivable stress tests. This future QA engineer put all these powerpacks in series and charged them at about 30 watts, then put them in parallel into a single motor.
In Danish what Americans would call a backhoe is called a Gravko, which translates to "Digging Cow." I find that terribly charming.
Yesterday's experiments included a little time to test the new solar bug. It's rather like sailing.
Two 3 watt panels charge a powerpack from red to white in about a minute in overcast skies.
I forgot how much energy there is even in a cloudy day.
@natematias I love several of the ideas in that book. :)
Making solar panels in the library for https://www.playingwiththesun.org
My latest attempt at Reggio inspired documentation of children's creativity. https://www.eer.info/activities/playing-with-the-sun