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THE 
PRINTED CIRCUIT
BOARD

The TOUCH PLATE is cut off the Printed Circuit Board leaving 3 areas for the 5 projects as shown below: 
The HIGH GAIN AMPLIFIER is built on the first section, then two more parts are added to make the LED Flasher on this section. The FLIP FLOP is built on the second section. The Fibre Optic Display uses the circuit from the first section and the 7x10 matrix board included in the kit.  The fifth project SIMPLE SIREN, is built on the third section of the board. 


The complete PC board showing the "break-off" Touch Plate

View of the Printed Circuit Board showing the copper tracks under the board:


The underside of the board showing the Touch Plate grid

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