Whadda WSEDU02 Manuale utente
EN SOLAR ENERGY EXPERIMENT KIT
WSEDU02
AGE 12+
ASSEMBLY MANUAL
whadda.com
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10 exciting solar projects which you can actually use.
PROJECTS FEATURED IN THIS BOX:
Solar-Powered LED ......................................................................... As long as the sun shines, the LED will light (pag.8)
Flashing Solar LED ......................................................................................... Solar-powered attention grabber (pag.10)
Solar-Powered Cricket.............................................................. As long as the sun shines, the cricket will chirp (pag.12)
Simple Solar Battery Charger...................................................... Free energy to keep your batteries in shape (pag.14)
Solar Battery Charger with ‘Charge’ Indicator.................. An LED turns on when the batteries are charging (pag.16)
Solar Musical Instrument.................................................................. ............................More light = higher note (pag.18)
IR Remote Control Tester.......................................................................................... ‘Listen’ to your IR remote (pag.20)
Solar Garden Light............................... .................. LED turns on at dusk and turns off at dawn, fully automatic (pag.22)
Solar Motion Detector / Beam Break Detector .................................Announce wanted or unwanted guests (pag.24)
Solar-Powered ‘Alarm Armed’ LED..................................... Charges during the day, scares burglars at night (pag.26)
Attention: All projects require direct sunlight or a strong incandescent lightbulb (min 60W). Fluorescent, energy
saving, led and certain halogen lightsources are not suited or will not give satisfactory results.
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PARTS SUPPLIED WITH THIS KIT:
4V / 30mA solar cell
This device will convert sunlight into electricity,
which we will use in all projects. More light means
more electricity. Point the black surface towards the
sun.
Will hold all your experiments. The white lines
show how the holes are electrically connected
with eachother (Velleman part# SDAD102)
(Velleman part# YH-39X35)
Breadboard
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The yellow & red LED provide a lot of light and require a very low
current to operate. Watch the polarity ! (Velleman part# L-5YAC & L-7104LID)
Various resistor values are supplied. They serve as
current limiters or as voltage dividers. Resistors do
not have a polarity. Resistors values are indicated by
means of coloured rings. The unit of resistance is
called ’Ohm’.
Flat side
Shortest leg = (-)
Just a piece of bare wire to
connect two points in a circuit.
Wire jumperUltrabright yellow & red LED
Resistors
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Diode Diodes allow the current to flow in only one direction, from
(+) to (–). Current flow in the opposite direction is blocked.
(Velleman part# BAT85)
Battery holder
Holder for two AAA rechargeable batteries. Mind the polarity
(Velleman part# BH421A)
A special case: Zener diodes
Zener diodes allow the current to flow
from (+) to (-), as regular diodes do.
If you invert the polarity, they drop a
certain voltage, which can be found
on the body of the zener diode, e.g.
2V4= 2.4V
(Velleman part# ZA2V4)
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Piezo speaker
A piezo speaker converts an electric
signal into sound. Polarity is not
Microcontroller (µC)
A programmable device which can perform various tasks.
We have pre-programmed it so that it will play musical notes or it
will generate the sound of a cricket. This device is has a polarity.
Watch the position of the notch. (Velleman part# VKEDU02)
Transistors
E B C
C B E
A transistor is an amplification device. By means of a small current,
a much larger current is controlled. Transistors come in two
flavours, NPN and PNP-types, depending on the polarity. With this
kit, you receive a BC557 (PNP) transistor. A transistor has 3 pins:
Base, Emitter and Collector. (Velleman part# BC557B)
Rouge
Noir
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PROJECT 1: SOLAR POWERED LED
As long as the sun shines, the led will light...
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Required parts: Solar cell, 100 ohm resistor (brown black brown gold), yellow led
How it works: A closed circuit is
required to make the current flow.
Current flows from the (+) of the
solar cell trough resistor to the (+)
of the led and via the (-) of the led
back to the solar cell. On a sunny
day, the solar cell will generate 3..4
volts. The led only requires 2 volts
to operate. Resistor R1 converts
the excess voltage into (a little)
heat, hereby protecting the led from
damage.
Time to experiment:
What happens when you swap (+) and (-) of the led?
What happens when you replace the 100 ohm resistor with
a 47000 ohm resistor (yellow purple orange gold) ?
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PROJECT 2: SOLAR FLASHING LED
Solar powered attention grabber
µC
Jumper wire
Indice
