These are an odd little thing. You stick them on the end of your car or truck door and when opened they start strobing as a warning to other traffic.
At first I wondered how they would fit in between the side of a door and the frame, but it turns out that on most cars there is a reasonable gap.
The devices use double sided pads to attach in place and use a magnet as a sensing device for when the door is closed. Each unit contains a single easily replaced CR2032 lithium cell and quiescent current is very low.
The units are available in a wide variety of colours. Here's a generic eBay search link for them. Target price is around $3.
https://www.ebay.com/sch/i.html?_from=R40&_nkw=car+door+warning+magnetic+induction+led&_sacat=0&LH_BIN=1&_sop=15
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
At first I wondered how they would fit in between the side of a door and the frame, but it turns out that on most cars there is a reasonable gap.
The devices use double sided pads to attach in place and use a magnet as a sensing device for when the door is closed. Each unit contains a single easily replaced CR2032 lithium cell and quiescent current is very low.
The units are available in a wide variety of colours. Here's a generic eBay search link for them. Target price is around $3.
https://www.ebay.com/sch/i.html?_from=R40&_nkw=car+door+warning+magnetic+induction+led&_sacat=0&LH_BIN=1&_sop=15
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
Take a cellphone Picture and zoom in 2 read instructions
Clive you should do a stream where you read the worst chinglish you have come across over the years/ chinglish in general… its funny and could get some views. Nothing like chinglish read in a scottish accent!
Maybe mot
Actually it looks like a 555 timer
From the arsenal of the Kreml
The Bad Dragon brick really needs to make more cameo appearances.
Who else wanted to probe the photo?
I am trying to have it keep blinking after the sequence is over, I located multiple toggle inputs yet none seem to allow a proper restart
I keep forgetting to tell you how much I like the blown up pictures of the circuits that you often put up, and to thank you for them. Makes it one hell of a lot easier to see what it is. On your drawing, I almost wondered why you were drawing the passenger side door, but before the full thought was done, I remembered that you were on the other side of the big pond.
0m Adhesive
🙂 the door drawing was a little confusing until I remembered right hand steering, left hand driving, that gave me a chuckle. Tootles… Wade N.C. USA
Reed switch?
I never see things like that here in the USA. We must make sure the way is clear and that it is safe before we open the door to get out. If someone opens their door into traffic here in the USA It is their fault if it gets struck by another vehicle.
Surprised they didn't just go for a reed switch and some self flashing LEDs, wouldn't that be cheaper than the 8 pin IC and hall effect sensor combo?