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Emmanuelle

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Pocket Sundial

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
Durée1h 0 min.
Date14.05.2013
Langue

Educated monkey

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
Durée0h 45 min.
Date08.05.2013
Langue

Magnetic alarm

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
Durée2h 0 min.
Date03.05.2013
Langue

Pantograph

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
Durée2h 0 min.
Date03.05.2013
Langue

Anti-monster flash light & buzzer

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
Durée2h 0 min.
Date03.05.2013
Langue
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