EEVblog Electronics Community Forum

General => General Technical Chat => Topic started by: jonovid on June 05, 2017, 05:05:06 pm

Title: another 5 oddball suggestions from an electronics hobbyst
Post by: jonovid on June 05, 2017, 05:05:06 pm
1
talking refrigerator magnets.
this one is so simple its just a audio chip unit with 0.2watt speaker,two AA calls, two button switchs and a mercury switch.
pull the refrigerator door & inertia of the mercury, trips the switch inside the enclosure, playing the audio recorded message.
note- the mercury switch must be encapsulated in plastic foam. so if the talking magnet unit falls on the floor.

2
the electronic Wheelie Bin reminder.
this is a mercury switch and a wireless doorbell circuit on the bottom of your Wheelie Bin in a box.
a indoors Blinky LED reset circuit tall's you if the bin has moved.

3
skateboard dvr sports bullet camera, must be rugged construction  to survive.. so why not!

4
jumbo size RGB spray painter for walls and shop front signage. works like a color printer and uses fuel injection type nozzles.
spraying cyan, yellow, magenta, white , and black paint.
-automotive fuel injection circuits and painter software.

5
digital fire  the electronic candle flame. the beauty without the fire. 
this is a LED candle with animated 3 color flame. blue ,yellow , and warm white in a transparent leaf shape.
atop a white tube with a light bulb base. 
Title: Re: another 5 oddball suggestion from an electronics hobbyst
Post by: jwm_ on June 05, 2017, 06:21:41 pm
These sound like fun weekend projects.  Number 4 is probably the most ambitious and more like a month long thing and I wouldn't expect stellar results. Number 5 can be bought in store already, many restraunts use them. Some even have breath sensors so you can “blow“ them out. Oddly enough, you also blow them on. Not that it wouldn't be a fun project anyway.
Title: Re: another 5 oddball suggestion from an electronics hobbyst
Post by: Cyberdragon on June 05, 2017, 09:16:22 pm
Number 5 already exists, check out Bigclivedotcom's channel.
Title: Re: another 5 oddball suggestion from an electronics hobbyst
Post by: MK14 on June 05, 2017, 09:54:26 pm
Quote from: jonovid on June 05, 2017, 05:05:06 pm
4
jumbo size RGB spray painter for walls and shop front signage. works like a color printer and uses fuel injection type nozzles.
spraying cyan, yellow, magenta, white , and black paint.
-automotive fuel injection circuits and painter software.

Here's one (done many decades ago, when computers still had starting handles) currently set up with all black inks, rather than RGB:

https://youtu.be/nN9wNvEnn-Q?t=1216 (https://youtu.be/nN9wNvEnn-Q?t=1216)

Anyway, a nice/clever set of ideas  :-+
Title: Re: another 5 oddball suggestion from an electronics hobbyst
Post by: station240 on June 05, 2017, 10:19:46 pm
#4 was also done by the Mythbusters
https://www.discovery.com/tv-shows/mythbusters/videos/mona-lisa-mona-lisa (https://www.discovery.com/tv-shows/mythbusters/videos/mona-lisa-mona-lisa)