Category Archive: LED Sign

Jan 03

LED Sign

Some time ago Reddevil gave me 6 led panels from a led sign. (Story [Dutch] can be read here: http://www.schematheek.net/index.php?p=forum/topic&t=337)

 

I made a frame from din rail to mount the panels on:

 

I also thought of how I’m going to make the power supply.

For every 2 panels there will be a transformer, rectifier, capacitor and voltage regulator. The voltage regulator will be a diy one that consists of a 2N3055 tor and a opamp)

Circuit power supply:

 

The LED sign is going to be controlled by a pc via usb. The usb gets “translated” to the signals for the led panels by this pcb:

 

All the pcb’s and transformers mounted on the frame:

 

2 test video’s:

 

The spreadsheet I used to draw the drawings: https://spreads…NWmdzcUE&hl=en

 

The next step will be getting the usb interface working. Then I’m going to make a pc program to drive the led sign. Maybe I even include pwm to dim pixels for video.