Our doorbell is the standard one with the small rectangular "illuminated"
that is screwed to the door frame.
Every so often, usually just prior to Halloween :)
I go out and replace the button - as the tiny bulb has burned out.
Wonder if there are any LED style replacements ?
I had seen some comments on an electronics forum
about how you might contruct one -
but was curious if any retail versions existed ?
*They are available, but I would avoid them. I have received at least two
phone calls about problems with them and someone posted on here months ago
with a similar issue. Evidently some door bells require that a diode be
added to the circuit. The button instructions even mention the diode, but
none are offered as an accessory to buy. Stick with neon.
I've modified buttons putting LEDs in. So far the new ones fail because the
plastics breaks apart cheap junk. Need to find some better buttons. It
might take a bit of talent to find a small led and figure out what size
resistor to use, and cram everything in there. These plastic models I used
had sun uv damage. Obviously need transparent buttons or housings. I don't
even remember what voltage, 24 vac ? I'll do the math later.
rather than light the button why not light the area around the button
area? say build it so it lights the lock too.....
use the power of the bell circuit, and diodes are cheap, under a buck
or two and available at radio shack.
one of my favorite purchases is a touch pad door lock, push any button
turns the lights for the buttons, push my choosen code and the door
unlocks. It has a key too, although I havent used it in over a year.
Best 100 buck purchase in years, no fumbling for keys:
Your using way too much common sense.
I never thought of using a side light, but since I have problems, might
give it a try.
You can put a diode in series with an led to limit dissipation. A value of
1 k to 5k ohms is also needed in series, but needs to be pretty big as it
gets hot. I got long led strip, and each led has it's own resistor, but
very small in physical size. I want to check temperatures. It designed for
12 volts dc. One led at 5-10 ma is plenty bright.
I need to get a touch lock.
my keypad lock has battery life over a year, which is fine. the
batterys arent charged.
if the electronics fail for any reason the key still works in manual
I had some work being done here, I asked the contractor what PIN he
wanted and deleted it when he was done:)
the best 100 bucks I ever spent:) At night pushing a button brings up
all the buttons lights:) for easy button pushing:)
I put a similar setup on my front and side doors a couple years ago.
Like you, haven't used a key since - stopped even carrying one as I
have hidden ones for emergencies. Wish I'd added these 30 years ago.
Now that I'm practiced I can open the lock faster then using the key.
I think there's one out that has a thumb print reader? I want the one
with the robot eye on a stalk that pops out of the door to look me over
then scan my irises or retinas. I seem to remember a movie "Gattaca"
where the access control to office buildings required a blood sample to
verify your DNA. The line of workers coming into a building stuck their
index fingers in a gizmo that popped a needle into the finger to get a
blood sample. Ouch! ^_^
Is there a limit to the length of the PIN? If there is, what is the
limit? Is there a limit to the number of active PIN numbers that
you can have at one time?
Does the keypad have letters on or near the numbers like a telephone
keypad? (I find it easier to remember a word than to remember a
When a cat sits in a human's lap both the human and the cat are usually
happy. The human is happy because he thinks the cat is sitting on him/her
The standard NE-2 neon lamp takes at least 90 volts to fire and most
doorbells operate on 16 volts AC. The standard lighted doorbell button
has a simple low voltage incandescent lamp parallel to the switch
contacts and it lights due to the small current flowing through it and
the solenoid coil of the doorbell as long as the button is not pressed.
When the button is pushed, the full current goes to the doorbell making
it ring. ^_^
Um, 63VAC has ~90V peaks. He was right, NE-2s "take at least 90 volts
to fire". Yes, you are also right, in that it is temperature and
(interestingly) external light dependant. The problem is that to save
a fraction of a cent, they're built like crap. I've never had a bulb
fail before the switch, though. I just had one go after less than a
year (plastic button broke, exposing the bulb).
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