Split-flap displays are a great, low-power way to display text to a wide audience. Compared to other display technologies ...
There are plenty of radios you can buy that pick up MW and SW bands if that’s what you’re into. Or, you can follow [mircemk]’s example, and whip one up yourself instead. The build employs an ESP32 as ...
In January 1994, the MTA officially debuted MetroCards as part of its effort to phase out subway tokens. Now, the transit agency is working toward having a completely contactless fare payment system.
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