You can use a twist drill bit but make sure you do not leave a thin copper whisker behind, joining up the track. This is best done with a spot face cutter, a small tool designed for the job. Note, there are two places where you have to break the copper tracks. The copper strips have been drawn as if you were viewing them through the board, this is so that you can see where the breaks go and the orientation of the strips. It is shown with the components on top and the copper strips on the back. The layout of this circuit is shown using strip board. When connected up to the Arduino this translates into values of 0 to 1023. The sensor is connected to a Darlington pair amplifier and will produce an output range between 0V when the beam is not obstructed and 5V when the sensor is covered. The beam generation part is very simple and the LED takes about 100mA through the 33R resistor, so it should be a high wattage one. Make sure that these are lined up and put a small piece of card to shield the sensor from light from outside. Note that the sensitive side is the large flat one without the writing on it.
Now on one side you glue the Infra red LED and resistor then on the other side you stick the Infra red sensor and other components to the inside of the box. With this circuit you should get a beam that covers about 6" or 15 cm so make sure the box opening is no larger. Next you need to make the IR sensor and emitter. So to make it you first of all need a box and a skull, or some other treasure, like a small ornament, unlawfully purloined by the Baron. Well that's the set up, if you were really serious you would just turn off the computer but this is a game remember!
0 kommentar(er)
