I tied a LED to the GPIO of my Raspberry Pi Zero (don't forget the resistor !) to monitor the state of a program.
Obviously I wanted the LED to be visible, but I also wanted to keep using the box to prevent dust to come to the PI board. But I didn't want an ugly LED to pop out of the nice slim official box.
So I decided to build a very simple light guide to fit inside the camera hole...
Step 1: Drilling and Taping
Drill a hole if you dont' have one already (I couldn't rephrase !), and put some tape on the exterior side of the device.
I used standard cellotape, I didn't try other type of tapes, using a different type of tape could create a different surface finish. I was thinking of trying medical micro-perforated tape. Please tell me about the results if you try !
Step 2: Put Some Glue
From the inside, now put some glue all over the taped hole using a hot glue gun.
Once you are done, blow on the glue to cool it fast.
Step 3: Remove the Tape
Once you are sure that the glue cooled down, remove the tape from the ouside.
You are done !