November 29, 2018

Butchering a BMO

Forgive me, BMO! Tonight, I extracted an MTR Octopus card NFC thingamajig and implanted it in a purchased-for-this-purpose hollow BMO figure from,
October 11, 2018

Today’s pre-soldering photo

The seller included the pin headers but yours truly had to stump up the 2P screw terminals. Today's recreational soldering: some breakouts for Si4599
October 5, 2018

And just a few decades later…

Two lemon batteries, connected in series, can (just barely) power a red LED. Making a lemon battery was one of the sciencey activities I encountered
June 1, 2018

Bedhead systems

From left: call button receptacle, call button plugged in (button itself dangling) with red reset button overhead, and a red triangular emergency-pull