Schematic -
Parts List -
R1, R5, R6 - 3 - 22K 1/4W Resistor
R2 - 1 - 10K 1/4W Resistor
R3 - 1 - 4.7K 1/4W Resistor
R4 - 1 - 150K 1/4W Resistor
R7 - R13 - 7 330 Ohm 1/4W Resistor
C1 - 1 - 1uF Electrolytic Capacitor
C2 - 1 - 4.7uF Electrolytic Capacitor
D1 - 1 - 1N4148 Signal Diode
D2 - D8 - 7 - Red/Green/Yellow LED
Q1 - 1 - 2N3904 NPN Transistor
U1 - 1 - 555 Timer IC
U2 - 1 - 74LS192 4 Bit Counter IC
U3 - 1 - 74LS08 Quad Intengreted AND Gate IC
S1 - 1 - SPST Momentary Pushbutton Switch
MISC - 1 - Board, Wire, Sockets For ICs, Case
Notes -
1. Pushing and holding S1 causes the LEDs to rapidly cycle. Releasing the button locks the pattern and shows a number from 1 to 6.
2. When building the circuit, make sure to position the LEDs as shown on the schematic. Otherwise the pattern of the dice will look weird.
3. Two circuits can of course be both powered by one switch to make a dual dice.
Parts List -
R1, R5, R6 - 3 - 22K 1/4W Resistor
R2 - 1 - 10K 1/4W Resistor
R3 - 1 - 4.7K 1/4W Resistor
R4 - 1 - 150K 1/4W Resistor
R7 - R13 - 7 330 Ohm 1/4W Resistor
C1 - 1 - 1uF Electrolytic Capacitor
C2 - 1 - 4.7uF Electrolytic Capacitor
D1 - 1 - 1N4148 Signal Diode
D2 - D8 - 7 - Red/Green/Yellow LED
Q1 - 1 - 2N3904 NPN Transistor
U1 - 1 - 555 Timer IC
U2 - 1 - 74LS192 4 Bit Counter IC
U3 - 1 - 74LS08 Quad Intengreted AND Gate IC
S1 - 1 - SPST Momentary Pushbutton Switch
MISC - 1 - Board, Wire, Sockets For ICs, Case
Notes -
1. Pushing and holding S1 causes the LEDs to rapidly cycle. Releasing the button locks the pattern and shows a number from 1 to 6.
2. When building the circuit, make sure to position the LEDs as shown on the schematic. Otherwise the pattern of the dice will look weird.
3. Two circuits can of course be both powered by one switch to make a dual dice.
