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Show HN: I made open source, zero power PCB hackathon badges

158 points by kaipereira

by sen

2 subcomments

That's very cool.
I have a few ePaper picture frames that don't use any power, and when you tap your phone to them it uses the power-over-NFC to boot itself and update the photo you send to it. It's such a cool idea and something I always felt like could be used more for displays that don't need to update very often.

by robertclaus

1 subcomments

How much did they end up costing? We do a similar PCB medallion every year for another event and haven't been able to get quite that fancy due to cost. We usually only manage to get some LEDs and a processor in our lower budget range.

by smcameron

1 subcomments

Interesting... RP2040 seems like maybe a bit overkill for a zero power badge. I've participated in writing some software for an RP2040 powered badge for the RVASEC conference in Richmond, VA, for several years, and the RP2040 is really nice to program for, and is quite powerful. https://www.youtube.com/watch?v=A5ZrHAXCFLA

by NooneAtAll3

2 subcomments

by aditmag

1 subcomments

Went to Treehacks at Stanford this Feb and they had PCB badges too! Gotta say these ones are much cooler tho :D

by bschwindHN

1 subcomments

Very cool! Quick question: did you use a plugin to generate the NFC antenna?
The routing and layout looks nice. The end result is great! I bet it was satisfying to get it working on the first try.

by moezd

1 subcomments

by metaPushkin

0 subcomment

by wiether

0 subcomment

Not directly related to the submission content, but trying to monitor trends: I understand there's the "no capitalization" one at the start of sentences and for the "I".
Apparently OP is not following this one, but I see that _some_ proper nouns are not capitalized (like github, singapore, overglade...) while others are.
Should I update my userscript to handle an incoming new trend?