Tell me about your cool Arduino projects

[space-time]

I just bought an Adruino-compatible starter kit, right now it is $40 after coupon

https://www.amazon.com/gp/product/B01CZTLHGE/

I plan to try out a couple of examples from the CD and then I have a couple of ideas in mind.

if you have worked with Arduino, tell me more about your projects. Thanks

[Carm]

Nothing special, just replaced the controller on 3D printer.
Used a generic Arduino board. Waiting for parts to come in for another project. (Under wraps for now)

[timg]

I used one last year to "enhance" my pumpkin - flickering LEDs for eyes, PIR motion detector and some scary sounds when you get close.

nothing constructive though.

[pinion]

When I got my kit to play around with I used to to measure the temperature in my kegerator and tweet it out at a regular interval. Nothing groundbreaking but it was fun.

[pinion]

Recently saw something someone did where they hooked a flow sensor up to their showerhead to measure how much water was being used and the cost and displayed it on a little black box.

[mikebw]

Interesting to see how everyone seems to think their own projects are nothing special.

[pinion]

mikebw wrote:
Interesting to see how everyone seems to think their own projects are nothing special.

The shower thing I thought was really cool. If I could do that and also get a temperature sensor in there I'd dig it. I might have to dust off my kit.