Clustered MCUs

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Here's my idea I'm afraid I did not quite have time to get it completed as I've had lots of other things on.

 

My first thought was what is the cheapest MCU I can find? I spotted the ATTiny10 chips for just 25p each so bought a handful of these along with some surface mount LEDs and resistors.

These would be powered from some button batteries I just happened to have lots of.

The nodes would be spaced out on a clear plastic sheet so you could see that there was no physical connection between them.

They would provide a synchronised pattern or message.

So how does the synchronisation work you ask? Well that would be done by using a camera flash and the LEDs acting as a sensor (a trick I learnt from the Microbit).

 

https://electronics.stackexchange.com/questions/902/detecting-light-with-an-led

 

Unfortunately I only got as far as wiring up the ATTiny to some wires and the LED to some wires. I do have a programmer for the ATTiny but I've not tried programming it yet.