We love how this project uses modern maker technology to help maintain an heirloom pendulum wall clock. See the full write up here by kamil47 on Instructables.
An extra long duration timer or universal reminder is used as wall clock winding reminder. Project describes circuit with microprocessor Attiny85, which is able to make alarms periodically in hours, days, month’s and even longer intervals.
Our family wooden pendulum wall clock, memory of my parents, is about 80 years old. It is still ticking (after I have roughly cleaned them).
The small problem is: The clock must be wind-up approximately every 10 days. I would like to keep it running always and not interrupt in moving. This is reason for reminder project: not to forget to wind it up in the right day.
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