Jeff has a new clock that he shared with the world on the DWF.nu forum. It is a new design for a nixie watch based on Burroughs B4998 tubes. It will include a rechargeable lithium ion which should last about 3 months. The device is 41mm wide, 19mm tall, 32mm deep and weighs about 28 grams (not including enclosure). Lastly, it will include a changing cradle for the watch.
This device also has some other uncommon features. The watch is activated by a wrist snap-shake using a magnetized ball rolling in a steel barrel. Any unintended activations are kept to a minimum by an R/C timer circuit. Setting the time is done with a rod magnet which activates a micro reed switches placed on each end of the logic section. All of this is built using CMOS logic components; just like the original LED watches of the 70’s. “I didn’t cheat and use a microprocessor. Although I did use seven very small TSSOP packaged IC’s.”
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — “Finally — some data on whether crowdfunding is a good investment or not”
Wearables — Sample code is your new best friend
Electronics — Meaningful gains
Sorry, the comment form is closed at this time.