Arduino Pendulum Clock Design - Comments Welcome

Don't be too discouraged Dave! Your device is the first real bit of new thinking in pendulum clocks for quite a while. One thing you could consider, given the sensitivity to vibration, is to have more than one pendulum, coupled together. Swinging in antiphase, they can be immune (long term) to horizontal shifts of the clock in the plane of the pendulum. There's a clock at the BHI HQ at Upton Hall that has 3 pendulums set at 120 degrees, all swinging inwards and outwards in phase - that sort of configuration could work well with your tripod and tank. The BHI version has a complicated mechanical escapement, it could be easier using EM impulsing.

Another point about using coupled pendulums is that, designed right, the CoG of the clock doesn't move with the pendulums, so much less energy is lost to the support. To work best the coupling needs to be tight, which implies a less rigid frame. It's critical that the pendulums have the same period exactly and the same mass, otherwise the amplitudes become unbalanced.

How can I insert a link to an mp.4 file showing further pendulum options for SoD? (humorous )

DaveD

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Do you have a Dropbox account, Dave ?

... It’s easy to provide a ‘read only’ link to a folder there

MichaelG.

Sorry, no Dropbox acct Michael. Perhaps I should investigate.

Also, thank you for the continuation link on the 'bridge' story, have not had time to
pursue the link yet but look forward to following through.
DaveD

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Start here, Dave **LINK**

https://www.dropbox.com/en_GB/basic

... but you may need the French localisation

MichaelG.

Doesn't have to be Dropbox, can share files through Google Drive for example.

.

True ...

Dropbox link attempt

https://www.dropbox.com/s/1t8mqdgl84izll0/Le%20Maitre%20des%20Horloges-Genial1.mp4?dl=0

DaveD

Supper calls, check back later !

Edited By Meunier on 22/01/2021 17:39:36

It works for me, Dave

... absolutely superb

MichaelG.

Now, how to make the link a 'linky' rather than a url. Thanks for the incentive Michael, now i will be able to add some bird photos, probably in tea-room, to avoid off-topic accusations. Japanese nightingales to be precise.
DaveD

Click this icon [affectionately known as the bubblecar, although of course it’s not]

... and follow your nose, Dave

**LINK**

https://www.dropbox.com/s/1t8mqdgl84izll0/Le%20Maitre%20des%20Horloges-Genial1.mp4?dl=0

MichaelG.

Thanks again Michael, every day is a good day when you learn/achieve something new !

**Link**

DaveD

I only hope that after all the effort SOD/Dave and JohnH have a chuckle

Edited By Meunier on 22/01/2021 20:32:39

Certainly did! Excellent, thanks.

Dave

DaveD

The man's got too much time on his hands.

I'll get my coat

Arghh!

Last month I decided to leave the clock running for 5 weeks to see how it behaved on a long run. Just checked and it stopped 3 weeks ago. Only then did I remember having to reset the cooker clock due to a power cut.

The clock flashes an LED to show it's running and it looked OK from across the room. Wrong LED! The Pi flashes a LED to show network activity and I was watching that. Should have gone to Specsavers!

Dave