DMX 3ch optically isolated splitter

As a continuation of this project. I decided to make a 3 channel optically isolated DMX-512 splitter.

Features:
  • 3 output channels (up to 32 devices on each channel)
  • Signal led monitor
  • Internal signal terminator
  • Compact
  • light weighted (~0.3 kg)


The case Gainta G738:


 Arranging the parts in case and panels:

Panel drawings:

Milling:

Cleaning:

Assembled panels and PSU in the case:


Schematic:

PCB:

Drilling:

Engraving:

Milling:

Cleaned:

Case fitting:


Soldering PCB and connector wires:

Assembled:

Turned on:

P.S. Some additions will be made soon because:
1. Power indication no needed (blue led) because signal indication have place and it's alwayso red or green.
2. LDO (7805) heats. Need 5V PSU  instead 12V and LDO.

So...  New version in another case and some other changes will be made this year? maybe... ;)