After the CR123A lithium cell in the Alpha Geek Clock gave out:
I duct-taped a pair of D cells onto the case and returned it to the bedroom shelf. According to the date scrawled on the tape, that was five years ago: 26 November 2010.
Over the last few months, the LED gradually faded from a blink to a steady glow as the battery voltage dropped below 2 V and the WWVB receiver output no longer reached the MOSFET’s threshold.
We’ll see how long these last:
Yeah, I should probably do something involving 3D printing…