Car door warning lights.
Added 2019-03-04 02:24:02 +0000 UTCThese little things are very simple, but they do actually work well with a low standby current.
https://www.youtube.com/watch?v=xY7Rc10U3Cg
I'm guessing there are some vehicles with such close fitting doors that they may not have room for these, but I found a couple of places they could be fitted on my driver side door.
I was going to include that in the video, but the rain has been hammering down all day.
Comments
Reuse of an old mold perhaps
Dustin
2019-03-08 23:47:22 +0000 UTCMine has a little reflector that doesn't light up about the size of these lights. But only the front doors. For my previous cars I'd put a strip of red reflective tape in there.
Nani Isobel
2019-03-05 01:38:19 +0000 UTCThanks, I should have checked what the standby was rather than assuming zero current. I still laugh at the nightlights that use more power when the photoresistor turns them off. I have a few hearing problems from industrial work but I find it funny that I can hear a reed switch. I bought a few some years ago just not found time to make anything. It is a pity the USB soldering iron running on a mains adaptor zapped the transistor. I should have done a better job with the extra earth wire. Thanks for all the motivational videos John
John Harrison
2019-03-04 23:04:54 +0000 UTCImage of rain “hammering down”. So, would I be wrong to say that two of the 8 pins in the mpu are unused? I saw three to the leds, one to the Hall Effect and two for the 3v and 0v rails. That leaves two.
2019-03-04 22:59:03 +0000 UTCMost reed relays are closed when the magnet is present, so they actually shunt the base current of a transistor to turn the LEDs off. That means they do draw a little current when off.
Big Clive
2019-03-04 21:50:50 +0000 UTCClive, I think the penultimate effect is a faster version of the last one.
2019-03-04 17:43:07 +0000 UTCI was thinking it’s like a fridge, how do you know if the light has gone off when you close the door 😂
Graham Eida
2019-03-04 16:35:07 +0000 UTCI thought it may have been a glass reed switch (zero quiescent current ) In Canada my father bought some small cupboard / draw switches that worked with reed switch. link below for the LED Sad to say there was a dry joint on the LED; I used my battery USB 8w (Clive review) soldering iron Pbank went flat so I hooked it to a USB charger and my extra earth wire fell off, releasing all the extra 110v goodness from the soldering tip into the circuit and the tiny transistor went pop, I could hear it go pop, I am sure there was a small scream before it went RIP They sold out but this is what it looked like <a href="http://www.leevalley.com/en/hardware/page.aspx?c=&cat=3,43629,64498&p=64498" rel="nofollow noopener" target="_blank">http://www.leevalley.com/en/hardware/page.aspx?c=&cat=3,43629,64498&p=64498</a> a few others 2 pages of interesting LEDs <a href="http://www.leevalley.com/en/wood/page.aspx?cat=1&p=43349" rel="nofollow noopener" target="_blank">http://www.leevalley.com/en/wood/page.aspx?cat=1&p=43349</a> John
John Harrison
2019-03-04 07:43:48 +0000 UTCdont all cars have a light in the door by standard? my ~20year old golf does, pretty sure most cars do?
Ben O'Hara
2019-03-04 07:18:48 +0000 UTCI think I will buy a few and put them on my toilet seat. :)
Lostngone
2019-03-04 05:19:23 +0000 UTCI would assume to spread the light distribution to a wider angle.
09Klr650
2019-03-04 05:02:45 +0000 UTCyou must figure out what that SOT23 hall switch is it could be very useful
God 420
2019-03-04 03:24:07 +0000 UTCThe pattern on the plastic reminded me of playing checkers. I wonder why they bothered putting a pattern on the plastic.
Mark Trombley
2019-03-04 02:49:54 +0000 UTCExcuse me while I whip this out! Lol. I thought of blazing saddles
Aaron Nadler
2019-03-04 02:29:13 +0000 UTC
