What Projects Would You Like to Do Around Arduino Days: March 21-23?

I was thinking of a choose your adventure type contest.   Where we look back at all the past themes and have you share an arduino project that fit your  favorite theme.

I really like this idea.   I think this should be a theme at some point if it isn’t used here.  Leaning toward a nostalgic theme.   This has been an amazing ride and birthdays, so many memories, so many great projects!

Bonus points if you end up at one of the pages which should in theory be impossible to reach

Milos had suggested a space theme.    I think something that combined these two themes would be perfect for what this is.

LiteWeight Gaucho Planisher

Planishing machines tend to be large and massive. It occurred to me that a pair of (perhaps ball peen) hammers could hang from a support so that the business ends barely touch each other. The intent is to have them bounce off of each other like clackers and sound like an upside down metronome which clicks when the hammers collide. Inspiration..

m.youtube.com/watch

And boleadoras from Argentina..

m.youtube.com/watch

Hang a sheet of metal between the hammers from a cord hooked through the hammer support and you can planish a thinner area in the sheet with two hammers and no anvil. Sensing when each hammer strikes the sheet and the other hammer and replacing lost energy in each swinging hammer with the arduino is the challenge. Extra credit for arduino control of sheet. Don't let it drive you clackers.

Ohh awesome! Could be a nice opportunity to play with GPS. I've never done that, been meaning to for ages.

Usually it's comms from the front garden wall to the house and not the other way around... 

Happy Arduino Days!    We will do a theme around "Time and Space" using an Arduino board.    It will be launched on April 14th,  on the 7th Anniversary of Project14.   :-).  

I have done GPS clock using ESP32 and an LTE + GPS integrated module. To include timestamp in log, I used NTP server when data is available and GPS when offline. Timestamp is used to set the ESP32's internal RTC time. Not the most accurate clock and communication with satellite is not fast either.  But it was a fun project.

thewildotter said:

The intent is to have them bounce off of each other like clackers

Might want to be careful when striking two hardened faces together without anything between.

thewildotter said:

Sensing when each hammer strikes the sheet and the other hammer and replacing lost energy in each swinging hammer with the arduino is the challenge.

You could probably achieve this using a simple cam arrangement. Rotating cam pushes the hammers apart then lets them drop at the end of travel, like a trip hammer.

Alternatively you could perhaps use a solenoid to give the hammers a kick apart every cycle. Some clocks use this technique to give the pendulum a kick to keep it swinging.

With it being metal you could perhaps use electrical conductivity to detect when the hammer touches the metal as it will complete a circuit. Don't forget to debounce the signal to clean it up.