 | This DIYs project is a very easy way to create a small pocket sundial. It helps to visualise the movement of the earth around the Sun and to understand how sundials work. This little sundial is a nice addition to other projects regarding solar energy. ... »
| | Note |  | | Difficulté |  | | Durée | 1h 0 min. | | Date | 14.05.2013 | | Langue | |
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 | Inspired by an American tin toy of around 1916, this educated monkey performs multiplications without any mistake. His feet show the two numbers to multiply and a hole above his hands shows the correct result. The mechanism of this DIYs project is very interesting and can be studied and ... »
multiply, hole
| | Note |  | | Difficulté | | | Durée | 0h 45 min. | | Date | 08.05.2013 | | Langue | |
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 | Why not build a magnetic alarm to protect your room or your drawers from any intrusion ! This DIYs project is an electronic device which detects the proximity of a magnet. If the magnet is moved away, the alarm will ring. ... »
intrusion, detects, proximity, magnet
| | Note | | | Difficulté |  | | Durée | 2h 0 min. | | Date | 03.05.2013 | | Langue | |
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 | This pantograph can copy a drawing about 1.5 times larger than the original size. Easy to make, it's a nice DIYs project to introduce the concept of scale and some notions of geometry. ... »
pantograph, geometry
| | Note | | | Difficulté |  | | Durée | 2h 0 min. | | Date | 03.05.2013 | | Langue | |
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 | Building this very special Anti-monster flash light & buzzer is a nice way to experiment an electrical circuit a bit more complex than the usual battery/bulb/switch one. Beware that once completed, this is a very noisy device... This DIYs project uses a very energy efficient ... »
flash, experiment, bulb, noisy, emitting
| | Note | | | Difficulté | | | Durée | 2h 0 min. | | Date | 03.05.2013 | | Langue | |
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