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Basic Electronics and Instructions for Connecting Miscellaneous Equipment
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Breadboards

Breadboards are used to connect circuits without the need for soldering, which makes them a great tool for quick testing and for those who can't solder. They are basically a board with rows of holes, copper strips run underneath which connect the holes on the top of the board [See diagram for layout of copper]. For more information see Iguana Labs.

Water Pumps

The water pumps are non-water proof pumps that require 12V/1A power. They have an inlet and outlet (tubing not supplied) for water circulation. Tubing for these can be bought at any hardware store, choose a tubing that is slightly smaller than the inlet/outlet to ensure a good seal. Also ensure that you are supplying the pumps with the correct power, we have 2 12V/1.5A power supplies available, using a power supply that is less than 1A will burn out the adapter. These pumps are meant for use in short bursts, similar to those used for windscreen washer pumps, prolonged use will cause them to overheat and stop working.

Multimedia Controller

We currently have 3 Laserex Multimedia Controllers. These are basically remote mice that communicate with the PC via IrDA. Java can respond to interaction via the Multimedia Controllers through its MouseListener interface.

Relays

In the case of EZIO's, relays are used to switch power to and from devices that require more power than the EZIO provides. This is generally done by breaking Connection of relays can be done using a breadboard or by connecting straight to the relay (this requires soldering). The diagram below depicts connection using a breadboard. Each side of the relay (5V SPDT) has 3 pins, connection between the 2 sides will stop the relay from working. To connect a relay:
  • Push the relay into the breadboard so that it spans the centre ridge.
  • Connect wires to EZIO as per diagram.
  • Split the positive wire of the power supply to the device.
    • Connect the device end of the positive wire to the

Power Supply

When providing power to equipment, ensure that you are providing not only the correct voltage but also the correct amperage. Most power supplies should specify the amperage and voltage on the mains end. It should appear something like this:
  • Input: 240VAC - this means it takes input power from mains.
  • Output: 12VDC - which means it outputs 12 volts of direct current. If it specifies AC (alternating current) ensure that the device you are powering is able to handle this.
  • Current: 450mA
© Lorna Macdonald 2003
Feel free to contact me at s4008068@student.uq.edu.au