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The African School of Fundamental Physics
Introduction |
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- a simple push button switch simulating a sensor that creates a binary signal. A real sensor might be a reed relay triggering when a magnetic field is close by or a thermistor triggering when a certain temperature level is exceeded ...
- a user programmable LED is available on the CPU card. This can be used as an alarm signal
- a 7 rgb LED chain used as a simple display device
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- a linear potentiometer simulating sensors which deliver analogue signals. A 12 bit analogue to digital converter as well as a 8bit analogue to digital converter are available on the CPU card.
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- a linear potentiometer simulating sensors which deliver analogue signals. A 12 bit analogue to digital converter (ADC) as well as a 8bit a digital to analogue converter (DAC) are available on the CPU card.
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< < | The cost of a complete set as described above is ~ 13 US $, shipping and VAT included. You can easily use the devices for 5 years, which will bring down the price per student and year to 3 US $. Of course, for a full school or university course you would add real sensors (e.g. temperature and humidity sensor, atmospheric pressure sensor, ultrasonic distance sensor, movement sensors ...) as well as real actuators like relays, motors ... which may bring up the cost to ~ 50 US $. Distributed over 5 years, this comes down to 10 US $ per student and year, which is till very reasonable. |
> > | The cost of a complete set as described above is ~ 13 US $, shipping and VAT included. You can easily use the devices for 5 years, which will bring down the price per student and year to 3 US $. Of course. For a full school or university course you would add real sensors (e.g. temperature and humidity sensor, atmospheric pressure sensor, ultrasonic distance sensor, movement sensors ...) as well as real actuators like relays, motors ... which may bring up the cost to ~ 50 US $. Distributed over 5 years, this comes down to 10 US $ per student and year, which is still very reasonable. |
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The problem: How do we use such a system? |