matthewtmead

Thanks so much for your comment supaquad! Lol, I agree that a limp handshake is icky, however it has been so long since I've been able to shake hands b/c of COViD that I wouldn't mind a limp handshake nowadays :)

Hey Caesi, thanks for your really thoughtful response and all the info you shared with me and the community! I will definitely try and make contact with Tim Gore and also check out SCA and IAAPA. You definitely have a wealth of knowledge and I'm so appreciative that you shared here. Thanks!

Yes, the sleeve, or flask, has a bunch of holes, and I covered the outside of the flask in 1 layer of clear packing tape (2" wide clear tape) to make it (for the most part) water tight. Any tape would probably work as you just need to keep in a cement-like mixture until it dries.

tikonc, thanks for your comment. I agree that a closed hand fist mold shape would be better for anyone concerned about the safety. You also made me realize that I REALLY appreciate when an author provides a cost estimate to build their project. I think your estimate of $200 USD is a good estimate for the supplies needed for this project. However, the cost might be closer to $275 USD if you include the Moldlay filament and other optional items.

This is really cool, nice work. Great idea and use of the arduino and the ultrasonic sensor. From the video, it looks like your current implementation turns on the stair light as someone is stepping toward a dark stair. Have you consider determining the direction of travel and turning on the next stair light, in the direction of travel, so the next step is also lit…so you are always stepping onto a lit stair (at least after the first stair)?

Wow, MichaelL628, great ideas. Someone needs to bring one of your ideas to life and submit it to the running Halloween contest!

kleetus92, depending on the swing of the door and the side the hand knob is installed, yes, it could do bad things to the wall :) Fortunately mine is mounted in a way that my hand cannot hit the wall. Definitely something to consider tho! Thanks!

DO8, great ideas to modify the open hand to something that would be safer around kids!

LOL, trickman777, makes you wonder if big brother is watching and listening... :)

Very clever, love the simplicity of the design. And we can see in the video that it works great.

Max, love your user name, very clever! When you give it a try, please share your results! Thanks!

Thanks jessyratfink for your response! I frequently review your "How to Write an Instructable"! You are a legond!

Thanks so much for the feedback!

LOL, ya my kids think it is creepy too...

YUM, I need to make these!

Nice work, super clever. Folks could take this idea and create trash cans with other brands. Great ible!