PC LED Load


PC LED Load

 

PC LED Load

 


PC LED Load is a device and software designed to display many shades of colors from green to red on your computer case LED. Colors are controlled completely by software and can be updated in real-time.

The PC LED Load circuit board is connected to one of the internal USB ports found on most newer motherboards. The only actual case modification required is in replacing the two (or more) front panel LEDs with tri-color versions. These are then connected to the PC LED Load circuit board.

PC LED Load

The board supports driving two separate tri-color LEDs. More can be setup inline if desired. Currently the software only uses the second LED and its color represents the CPU load of the system in real-time. Blue for idle and gradients light blue, green, yellow, orange, and finally red indicating heavy CPU utilization. If the system fails to respond, the LED begins flashing RED to indicate a lack of communication from the software. This lets you easily identify a crashed machine in a rack for example.



The hardware is implemented by using a AVR ATMega88 microcontroller. The firmware is based on a software implementation of the USB 1.1 protocol. The firmware was derived using code from the great AVR-USB project.



All of the LEDLoad software and firmware is licensed under a modified GNU Public License with some restrictions.



See the document section for more pictures.


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