How to Build The Circuit?
Begin by assembling the circuit board first with the help of the given circuit schematic. As usual it may be simply done by inserting all the procured electronic components on a general PCB and interconnecting their leads through soldering.
For the enclosure you will have to procure a suitable circular plastic box with a locking type of lid. You can get plenty of them in wholesale plastic marts.
Next, drill holes on the lid of the box as per the size of the LED in a circular fashion; neatly do the necessary drawings and markings of numbers as per your own liking. Fix all the LEDs into the drilled holes to form a large circle of a chain of LEDs. Also make provision for fitting the" start" button on the center of the lid.
Interconnect all the LED leads from the rear side as per the circuit diagram.
Join the output wires from the circuit to the appropriate points of the LED assembly and the “start" switch.
Finally strap the battery connector to a 9 volt PP3 type battery.
Fix the lid over the box enclosing the circuit and the battery inside it.
Initially you will find that out of the 10 odd LEDs only one is lit up.
On pressing the “start" button, the LEDs get illuminated one after the other in a sequential manner producing a rotating effect.
Initially the speed of its “rotation" is quite fast. It gradually slows down and ultimately after few seconds only one of its LEDs remains lit over a particular unpredictable position.
This position of this lit LED will always vary; no matter how many times the switch is initiated, perfectly imitating a casino roulette wheel.
The above instructions to build your own simple electronic game must have certainly helped you to understand regarding the easy construction procedure of this little roulette game. You may use this only as a fun project to amuse your friends but remember "no betting please!"
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