Summary of LED CUBE CIRCUIT 5X5X5 PIC16F688
This article details a 5x5x5 LED cube project utilizing the PIC16F688 microcontroller. The design employs multiplexing to control 125 LEDs across five layers using only 30 connections, refreshed at 100Hz via software interrupts to prevent flicker. The project includes assembly source code, PCB diagrams, and hex files, offering an ideal balance between visual impact and assembly effort compared to larger cubes.
Parts used in the 5x5x5 LED Cube:
- PIC16F688 microcontroller
- CA4016 LED adjustable driver (16 channel flow)
- 125 LEDs arranged in 5 layers of 25
- Printed Circuit Board (PCB)
- PIC16F688 assembly source software
- Hex codes
Led cube pic16f688 microcontroller used in the output driver circuit in the CA4016 LED (adjustable driver 16 channel flow ) is being integrated over. Prepared with PIC16F688 assembly source software. Asm, pcb printed circuit... Electronics Projects, Led Cube Circuit 5x5x5 pic16f688 “led projects, microchip projects, microcontroller projects, “
LED cube is made up from 125 LEDs arranged into 5 layers of 25 LEDs each. The display itself is multiplexed so instead of requiring 125 connections it requires one to each of the five layers and 25 to each LED in a layer making a total of 30. The cube is refreshed by a software interrupt routine with each layer active for 2ms, so the entire cube is refreshed every 10mS (100Hz). This results in a display with no visible flicker. LED cubes, small 3x3x3 cubes, bi-colour, RGB and mono cubes, amazing 16 x 16 x 16 RGB cubes. However, very few show you how to make one and provide the firmware. 5x5x5 LED cube project shown here is a great size if you want to have ago at building a LED cube. Why? because it gives a good balance between the number of LEDs and therefore cost and time needed to assemble it and the overall 3-D effect. 8x8x8 or even 10x10x10 cubes look good and it doesn’t sound much more work than a 5x5x5 cube but you’re going from 125 LEDs to 512 or 1,000 LEDs in a 10x10x10 cube – that’s alot of work.
Source: LED CUBE CIRCUIT 5X5X5 PIC16F688 alternative led-cube-circuit-5x5x5-pic16f688.rar alternative link3
- How many LEDs are used in this cube?
The cube is made up from 125 LEDs arranged into 5 layers of 25 LEDs each. - How does the display achieve no visible flicker?
The cube is refreshed by a software interrupt routine with each layer active for 2ms, refreshing the entire cube every 10mS at 100Hz. - Why is the 5x5x5 size considered a great choice for beginners?
It gives a good balance between the number of LEDs for cost and time needed to assemble it versus the overall 3-D effect. - How many connections are required instead of 125?
Instead of requiring 125 connections, it requires one to each of the five layers and 25 to each LED in a layer making a total of 30. - What type of software is used for this project?
The project is prepared with PIC16F688 assembly source software. - Does the article mention how to make larger cubes like 8x8x8?
The text notes that while 8x8x8 or 10x10x10 cubes look good, they involve significantly more work due to the increase in LED count. - What components are included in the complete project materials?
The materials include ASM, PCB printed circuit diagram, hex codes, and a list of materials.

