The pandemic may have taken away many of our real-world events, but as they’ve gone online their badge teams have often carried on regardless. One of these comes from Carolinacon, and it’s decided to eschew the bleeding edge of electronic wizardry and instead push slightly at the boundaries of PCB art. It contains a hidden message in a copper layer behind a band of white silkscreen, which is revealed by a set of LEDs on the reverse of the board shining through the translucent FR4.
Electronics-wise it’s a pretty simple design, sporting only an ATtiny microcontroller and a photoresistor alongside the LEDs, and with the secret message being triggered when the badge is placed in the dark. The conference’s pig logo is eye-catching, but it has no pretences towards being a dev board or similar. The technique of LEDs behind copper and silkscreen is an interesting one though, and something that we think could bear more investigation in future designs. It’s pleasing to see that there are still new avenues to be taken in the world of PCB-based art.
This isn’t the first time this event has had an eye-catching badge, we’ve covered one of their previous offerings.
This is also human hacking, ’cause now I want some hickory smoked BBQ, for some odd reason.
Huh. With that facial expression, the glowing eyes and the knives… I thought the message was that hickory smoked BBQ wants some of you!
i think my best hack is my pork ribs recipe. no it is not open source.
Let me guess.. ketchup, mustard, worchester sauce, pepper? Maybe a few extra spices depending on your place of origin? =)
Pink Floyd had flying pigs with glowing eyes (blowing smoke out their nostrils).
I wonder if the “secret message” is connected to that.
Oh wait! I can read the message in the title photo, it faintly shows through the white band!
(Now I don’t have to buy a badge to figure it out)
I see no provision for SAOs.