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COVID-19 | SAO Simple Add-on

A simple 555 timer that blinks the test result strip

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thought of this gimmick to have as a give-away for internet friends at the supercon 2022

BOM

R1, R4 100 Ohm

R3 150 Ohm

R2 390k Ohm

C1 1uF

D1, D2 RED LED 

U1 LMC555 timer

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Tom Nardi wrote 01/12/2023 at 22:39 point

Are you planning on releasing the board files for this?

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davedarko wrote 01/12/2023 at 22:59 point

woops, thought I had posted the github link here, it's in this repo https://github.com/davedarko/Simple-Add-ons-SAO

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sunny wrote 12/31/2022 at 05:13 point

Do you consider replacing the plug on the back with typec?

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davedarko wrote 01/01/2023 at 09:53 point

hey sunny, I haven't seen any simple add-ons for badges that use USB-C yet. If I'd make this portable, I would probably just use a coin cell instead.

  Are you sure? yes | no

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