Introduction: RGB Electronic Die

This project is an RGB Electronic Die that generates the codes from 1 to 6 through 7 RGB LEDs as outputs for showing the mentioned numbers while the inputs are the codes generated by a 7490 counter fixed to count from 000-101. For carring out the RGB Electronic Die, it's necessary to design a decoder interface between counter and display by being this last one: a configuration of 7 RGB LEDs referenced previously. Also, we'll need to use a rotary switch of 4 poles y 3 positions for selecting the three possible colors: Red, Green or Blue.

Step 1: Bill of Materials

Picture of Bill of Materials

1 PCB 9cmX 15cm

7 5mm RGB LEDs

7 LED Mounting Hardware LowPro T1-3/4 Clear

1 IC7490

1 IC7408

1 IC7432

1 IC7404

1 IC555

4 Socket IC 14-Pin Dual Wipe Low Profile 0.3 Inch Wide

1 8-Pin IC Socket Dual Wipe Low Profile 0.30 Inch Wide

1 Potentiometer of 10K

1 Resistor of 470 Ohm, 1/4Watt

1 Electrolytic Capacitor of 1uF

1 Voltage Regulator 7805

1 Switch Push Button Tactile

1 Rotary Switch 4 poles y 3 positions

1 9V Battery Snap with 6 Inch 26 AWG Wires

1 9V Battery

Some connecting wires

Step 2: Schematic I: the Design

Picture of Schematic I: the Design

Schematic I is the design of your project.

Step 3: Schematic II: the Project

Picture of Schematic II: the Project

Schematic II is the whole project.

Step 4: Schematic III: Clock Circuit

Picture of Schematic III: Clock Circuit

Schematic III represents the clock circuit that you need in your project.

Step 5: Identifying RGB LEDs

Picture of Identifying RGB LEDs

Before installing the RGB LEDs, you need to Identify correctly the pins of all RGB LEDs that you are going to use in your project.

Step 6: Install the LEDs and IC Sockets

Picture of Install the LEDs and IC Sockets

Once installed the LEDs and the IC sockets, you can connect the LED's cathodes each other.

Step 7: LED's Cathodes to IC Sockets

Picture of LED's Cathodes to IC Sockets

Note that you will be connecting the LED's cathodes to IC7490 in its pins 7 & 10 while IC7408 and IC7432 in theirs pins 7.

Step 8: Install the Capacitor

Picture of Install the Capacitor

Install the capacitor of 1uF by connecting it to pin 1 of IC555 its negative polarity while its positive polarity to the pins 4 & 8 of that same integrated circuit. Besides that, connect from pin 1 of IC555 to pin 7 of IC7404 and to LED's cathodes.

Step 9: Installing the Pot & Resistor

Picture of Installing the Pot & Resistor

Install the pot of 10K and resistor of 470 Ohm by following the instructions on your schematics.

Step 10: Install the 7805

Picture of Install the 7805

Install the voltage regulator so that you can do all interconnections among the integrated circuits and 7805. That is, the pins that will be connected to +5V: pin 14 for IC7404,IC7408 & IC7432, pin 5 for IC7490 and pin 4 & 8 for IC555.

Step 11: Install the Switch & the Battery Snap

Picture of Install the Switch & the Battery Snap

Install the switch and the battery snap with wires red & black so that you can do the connections at the rest of circuit.

Step 12: Make Hole of 3/8"

Picture of Make Hole of 3/8"

Need to make a hole of 3/8" so that you can install the rotary switch.

Step 13: Identifying the Rotary Switch

Picture of Identifying the Rotary Switch

Identify the pins of your rotary switch by identifying each pole from 1 until 4 and begin with the first position in Red for each pole. That is, pole 1: Red, Green, Blue, pole 2: Red, Green, Blue, pole 3: Red, Green, Blue, pole 4: Red, Green, Blue. Check your schematic.

Step 14: Install the Rotary Switch

Picture of Install the Rotary Switch

Install the rotary switch and the plastic knob and do all connections carefully. Note that you can fold each pin of the first position for establishing a color; for example, you can begin with red to connect all red colors from the pole 1 to pole 4 according to the schematic cited.

Step 15: Connect the 9V Battery

Picture of Connect the 9V Battery

Connecting the 9V battery, you can play with your RGB Electronic Die and you also have the option of selecting from three colors: red, green or blue. Enjoy it.


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