Summary of PIC16C54 dual dice electronic project circuit
This project is a dual electronic dice built around a PIC16C54 microcontroller driving two 7-segment LED displays. It uses few external components, runs from a 5V supply (optionally from a 9V battery plus a 5V regulator), and detects a button press on RA0 to trigger dice rolls. The PIC uses its internal RC oscillator, limited-current resistors for the displays, and simple pull-ups and resets for reliable operation.
Parts used in the PIC16C54 Dual Dice:
PIC16C54 microcontroller
Two 7-segment LED displays
150 ohm resistor (R1) for display current limiting
10K resistor (R3) for RC oscillator
330 pF capacitor (C2) for RC oscillator
Pull-up resistor (R4) for input RA0
Momentary push switch for RA0 input
5V three-terminal voltage regulator (optional, when using 9V battery)
9V battery (optional) or 5V DC power supply
Decoupling and wiring components as required (wires, PCB or breadboard)
An electronic dice project circuit can be designed in various modes , using logic circuit or using microcontrollers . This electronic project is based on the PIC16C54 microcontroller , manufactured by Microchip . This project is a simple dual dice electronic project , that use few external electronic parts and LED displays , to generate ( simulate ) dices .
As you can see in the schematic circuit , the main advantage of this electronic dice project is that this circuit require few external electronic parts ( like many of the microcontroller based projects ) .
The circuit needs to be powered from a 5 volts DC power supply circuit , but you can use a 9 volts battery and a 5 volt three terminal regulator ( connected like in this circuit diagram ) .
There are two I/O ports in the 16C54; one 8 bit & the other 4 bit. The 8 bit port, Port B, is connected to the 7 segment display. Three pins of the 4 bit Port A are used and the other pin is tied high. Pin 4 of the PIC is also tied high to give a power-on reset.
A 150R resistor acts as a current limiting resistor for each display. PIC ports have a maximum sourcing current of 40mA ( the maximum current for the LED display is 200mA so it is the PIC that R1 is protecting, not the display.)
The PIC uses its internal RC clock oscillator option (with the 10K resistor, R3, and the 330pF capacitor, C2) and runs at about 330kHz. The switch is connected to input RA0. Normally this line is pulled high via R4 to +5V, but when the switch is closed the input is pulled low. The software detects the falling edge as a dice roll.
You can download souce code for this electronic project following this link
Quick Solutions to Questions related to PIC16C54 Dual Dice:
What microcontroller is used in this electronic dice project? The project uses the PIC16C54 microcontroller manufactured by Microchip.
How are the two dice values displayed? Two 7-segment LED displays driven from the PIC16C54 show the dice values.
What powers the circuit? The circuit requires a 5 volt DC power supply, or a 9 volt battery with a 5 volt three-terminal regulator.
How is the dice roll triggered? A momentary switch connected to input RA0 is used; the software detects the falling edge when the switch is pressed.
Which PIC ports are used for the displays and inputs? Port B (8-bit) is connected to the 7-segment displays; Port A (4-bit) uses three pins for inputs with one pin tied high.
What oscillator option does the PIC use? The PIC uses its internal RC clock oscillator with a 10K resistor and a 330 pF capacitor, running at about 330 kHz.
Why is a 150 ohm resistor used for each display? Each 150 ohm resistor limits current to protect the PIC ports, which have a maximum sourcing current of 40 mA.
Is there a reset connection in the circuit? Yes, Pin 4 of the PIC is tied high to provide a power-on reset.
I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough...
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