Posts Tagged ‘Electronics’
Showing Brownies simple electronics
January 30th, 2011 | 
Author: 
(Copyright V Steele)
Ginny, my wife, is a one of a group of leaders for a Brownie pack in a nearby village. Last week we showed the Brownies some simple electronics and they had some fun with a really simple circuit.
We had them put a number of LEDs onto a 3V button cell, rather like a LED throwies but without the magnet. Once they had an arrangement of three or four LEDs on a cell Ginny took photographs of them in a darkened room as they waved the LEDs around. Taking a photograph on a slow file speed setting (ISO 80) and over a relatively long period (15 s) the Brownies created some great art by ‘painting with light’. As well as the example above, a small selection is shown below.
(All photographs copyright V Steele)
There was about 22 or so Brownies and we had them work on an LED ‘circuit’ in pairs. They really enjoyed the fun of arranging the LEDs and working out which way around to place them. However, I think they had the most fun with the ‘drawing with light’.
While some were involved with the photography I showed others the fun that could be had with electronics and how circuits could make things work. To do that I showed them how I could not light up an ultra-bright LED with a used 1.5V battery on its own. But, when I used a few components, connected into a Joule thief circuit, then the LED would light up brightly with the 1.5V battery. I also had some plastic optical fibre too and they had fun watching light bending around corners.
We kept the exercise simple and very visual and they all seemed to enjoy it.
If you want to make your own Joule thief you may find the Make magazine podcast below interesting and useful to watch.
Jeri Ellsworth video “Secret to Learning Electronics – Fail and Fail Often”
I came across this video by Jeri Ellsworth via the Make blog and I was so impressed with the content I thought I would repost it. Listen to what Jeri says, there is some great advice here.
Ottawa Mini Maker Faire 2010
For readers local to my home area you may be interested in this exciting and free event in Ottawa this weekend. Full details can be found on the Artengine website. The essential details are:
Dates and times: Nov. 6th and Nov 7th, 12pm to 6pm.
Location: Arts Court 2 Daly Ave. Ottawa, ON K1N 6E2
If you are not sure what makers do or what goes on at a Maker Faire take a look at this video of the 2010 Kansas City Mini Maker Faire
