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Source code and all files for the generic 8x8x8 3D LED Cube found on eBay (having STC 8051-based STC12C5A60S2 mcu), aka. 3D LightSquared 8x8x8 LED Cube DIY kit, ideasoft etc.

Note: as received from manufacturer with additional cleanups/optimizations.

Firmware v2

The firmware/v2 directory contains an optimized and more advanced version of the ledcube firmware. All animations were removed except one and UART/serial based control was implemented. So the cube can be controlled with Arduino/Atmega or simple PC serial console.

Note: The ledcube UART control mode is activated once the first command comes over serial connection.

The new firmware can be flashed/written to STC MCU through UART/serial connection. Software such as STC-ISP is required to transfer the hex file (machinecode) to the STC microcontroller.

Download here:

Serial connection:
  • USB-2-TTL converter/adapter/module can be used to connect to PC (e.g. search eBay)
  • Parameters: baud - 9600 bps, 1 stop bit, no parity
  • Cube UART pins: VCC, GND, P30(RXD), P31(TXD)
Programming STC
  • Connect serial module to ledcube serial pins, RX to TX, TX to RX
  • Open STC-ISP and select STC12C5A60S2 and serial port
  • Select HEX file: ledcube8.hex and press Download/Program or Re-Program
  • Reset power to MCU to start programming

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Alternative programming/flashing tool: STCGAL

If you have trouble with the official STC-ISP, try using:

Extra - C51 project

Keil uVision C51 project file is also available in the firmware/v2 directory if compiling the source code is a must. Keil C51 compiler tools are required to open the project.

Download here:

The required STC mcu C headers need to be installed from the STC-ISP tool via "Keil ICE Settings" tab. Use the "Add MCU type to Keil" button and point to your Keil install directory.

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Firmware v2 for SDCC

SDCC compiler supports compiling code for STC12C5A60S2.
Adapted version of v2 firmware for SDCC can be found in firmware/v2-sdcc folder (created by Michael Knyazev).

LED Cube control

Control program

The cube (with Firmware v2) can be controlled over serial port/console with: PC Program.
Program allows to create animations and playback them.