Nice! Is there a writeup on this anywhere?
Thanks!
73, Willie N1JBJ
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On Jan 23, 2023, at 11:06 AM, Howard AC1MN <AC1MN@...> wrote:
I have built a few of these clock kits recently for myself and friends. Power was the first consideration and most everyone wanted 12V compatibility and backup. I used the buck converter mentioned by LY2H in this YouTube. Next backup is provided by a protected 18650 and inexpensive charger module. I strongly suggest the use of a protected 18650 and thoroughly testing as failure to do so could be catastrophic. Lithium Ion batteries can be dangerous. Electronic noise is a consideration but so far, no one has reported an issue. If you try this and have a noise issue, please let me know as I have some ideas on how to eliminate it.
The clock can run for many hours on a charged 18650 and is perfect for Field Day use. The case I designed was inspired by one I saw on Thingiverse.
Howard
