Price - Stock No 52
Skill Toy With 2 Flashing LED's
Check your kit
- printed circuit board (PCB)
- 2 x Flashing LED (Light Emitting Diode)
- battery snap
- resistor - 220 ohms
- 2 x PCB pins
- hook-up wire
- heat-shrink tube
- teardrop terminal
- Turn the PCBoard over so that you are looking at
the PLAIN side. From the drawing, find the locations of the
components. You will need to turn the PCB around so that
it coincides with the placement sheet.
Remember that you are seeing the copper track through the PCB.
- Bend the legs of the resistor to a shape that will
fit into its two location holes. Push them through and firm the resistor
down against the PCB. See Resistors.
- LED's are "Light Emitting Diodes". Spread the legs of the LED's
carefully so they spring into its correct
holes. Push the legs just through the PCB so the LED's stand high off
the board. You should check that the small flat on the flange at the
base of the globe is the same way round - (K leg has the flat). The
LED is polarised - a semiconductor - and will not work if placed
the wrong way round.
- These two components may be soldered in place.
- Push the ends of the battery snap wires through, and
- Push the PCB pins into the correct holes and solder.
- Bare the ends of the hook-up wire, tin both ends and
solder to the two pins. Leave the wire in one piece until you have
tested your project on a battery, and it works.
- Connect a 9 volt battery and test. If it doesn't work
check that you have all the locations correct and that you
have the LED's in the correct polarity.
Contact CdS electronics