8
Connection & test
The push button (single pole normally open contact) has to be connected to the points PB.
Display selection is done by connecting VD1 respectively VD2 to VD.
You can make these connections permanent, or use a bipolar three position slide switch as shown in the
connections diagram. In this case the slide switch functions as selector and on/off- switch at the same time.
The power supply has to be connected to the and -. At choice you can use a 9V battery, a 8 to 12V
power supply, or a 6V transformer.
For testing you select both displays.
Push the button. As long as you push, the leds all burn feebly. This is because the dice are 'rolling'. Cheating
is out of the question, thanks to the very high and different speeds of both dice.
The result appears as soon as you release the button.
After about half a minute displays are switched off, so that current consumption is reduced to less than
1mA.
11. Connection & test
