I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
On 14/05/2025 20:11, Chris Green wrote:
I'm looking for a switch (as in am on/off switch, or even better a momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Can't you put a standard switch inside one of those passive key
containing code lock box for carers/cleaners for house entry, that is
such a boon to burglars, saves them having to search under rocks,
flowerpots, gnomes etc?
N_Cook <diverse@tcp.co.uk> wrote:
On 14/05/2025 20:11, Chris Green wrote:Possibly, but it is rather less convenient. Just being able to walk up
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Can't you put a standard switch inside one of those passive key
containing code lock box for carers/cleaners for house entry, that is
such a boon to burglars, saves them having to search under rocks,
flowerpots, gnomes etc?
and enter the code on the buttons is what I'm after.
This is to replace a failed wireless keypad that operates our garage
door. The remote key fobs still work (from the car, one by the front
door, etc.) but we need a way to get into the garage when standing by
the door (of the garaage). There's no need for wireless as the keypad
sits on the garage door jamb. It just needs a momentary switch
closure to operate the door.
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
https://shop.pimoroni.com/products/rp2350-stamp?variant=53521682530683
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at >somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
--
Chris Green
·
Chris Green <cl@isbd.net> wrote:
I'm looking for a switch (as in am on/off switch, or even better a momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
If you are happy doing some electronics assembly then this might be an answer;
https://picaxe.com/docs/chi008.pdf
The kit is no longer available but the technical notes contain a list of components and the full circuit diagram and a program to download on the chip. The Picaxe PIC can be bought from Revolution along with their
specific download lead, other suppliers such as Rapidelectronics also stock the components. Software and manuals are free to download.
Tricky Dicky <tricky.dicky@sky.com> wrote:
Chris Green <cl@isbd.net> wrote:
I'm looking for a switch (as in am on/off switch, or even better a momentary action one) that is actuated by entering the correct combination on a keypad.
I've tried searching for "electronic combination lock" but that
only produces actual locks operated by a keypad. I don't want a
lock, I want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point
me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
If you are happy doing some electronics assembly then this might be
an answer;
https://picaxe.com/docs/chi008.pdf
The kit is no longer available but the technical notes contain aI was wondering if there were things like this around, thank you,
list of components and the full circuit diagram and a program to
download on the chip. The Picaxe PIC can be bought from Revolution
along with their specific download lead, other suppliers such as Rapidelectronics also stock the components. Software and manuals
are free to download.
that's well within my electronics capabilities I think. I wonder if
there's an Arduino equivalant, I have Arduino stuff to hand.
Chris Green <cl@isbd.net> wrote:
I'm looking for a switch (as in am on/off switch, or even better a momentary action one) that is actuated by entering the correct
combination on a keypad.
Search Aliexpress for 'access control keypad'. eg:
https://www.aliexpress.com/item/1005006437669484.html https://vi.aliexpress.com/item/1005002480572465.html https://vi.aliexpress.com/item/1005008652788913.html
They appear to take 12/24v power and have an 'open' output. They can do
RFID cards as well, but I don't think you need them.
Not sure how you program in new key codes, but presumably via the keypad?
On Wed, 14 May 2025 20:11:00 +0100, Chris Green <cl@isbd.net> wrote:
I'm looking for a switch (as in am on/off switch, or even better a >momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only >produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at >somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Would a remote fob do the trick? This is from the USA but surely
something similar must be available here:
https://www.ebay.co.uk/itm/387856115928
On 15/05/2025 09:46, Chris Green wrote:
N_Cook <diverse@tcp.co.uk> wrote:
On 14/05/2025 20:11, Chris Green wrote:Possibly, but it is rather less convenient. Just being able to walk up
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Can't you put a standard switch inside one of those passive key
containing code lock box for carers/cleaners for house entry, that is
such a boon to burglars, saves them having to search under rocks,
flowerpots, gnomes etc?
and enter the code on the buttons is what I'm after.
This is to replace a failed wireless keypad that operates our garage
door. The remote key fobs still work (from the car, one by the front
door, etc.) but we need a way to get into the garage when standing by
the door (of the garaage). There's no need for wireless as the keypad
sits on the garage door jamb. It just needs a momentary switch
closure to operate the door.
If low voltage and current. With say a calculator keypad you could cut
the tracks to say the click switches 1,3,6,8 and wire them in series. Requiring pressing 1+3+6+8 concurrently rather thaan sequentially which
is not an obvious thing to do AFAIK.
Assuming the unloock operation is out of the weather and not observable
by anyone or they would know to press all the buttons at the same time. Pressing any sequence of 4 buttons would never unlock it
AnthonyL <nospam@please.invalid> wrote:
On Wed, 14 May 2025 20:11:00 +0100, Chris Green <cl@isbd.net> wrote:No, we already have several of those, all working still. We need
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Would a remote fob do the trick? This is from the USA but surely
something similar must be available here:
https://www.ebay.co.uk/itm/387856115928
something to stick on the outside of the garage that's (somewhat)
burglar proof but will let us open the door.
AnthonyL <nospam@please.invalid> wrote:
On Wed, 14 May 2025 20:11:00 +0100, Chris Green <cl@isbd.net> wrote:No, we already have several of those, all working still. We need
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Would a remote fob do the trick? This is from the USA but surely
something similar must be available here:
https://www.ebay.co.uk/itm/387856115928
something to stick on the outside of the garage that's (somewhat)
burglar proof but will let us open the door.
On 15/05/2025 13:13, Chris Green wrote:
AnthonyL <nospam@please.invalid> wrote:
On Wed, 14 May 2025 20:11:00 +0100, Chris Green <cl@isbd.net> wrote:No, we already have several of those, all working still. We need
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Would a remote fob do the trick? This is from the USA but surely
something similar must be available here:
https://www.ebay.co.uk/itm/387856115928
something to stick on the outside of the garage that's (somewhat)
burglar proof but will let us open the door.
Its not exactly burglar proof if its just a plain on/off or momentary
switch, they just need to access the cable and short/open the switch
wires. The security will depend solely on how well you can protect the wiring.
I assume the secure way would involve a weatherproof keypad with matrix
or serial output which gets transmitted to a decoding unit inside the
garage.
Chris Green <cl@isbd.net> wrote:
AnthonyL <nospam@please.invalid> wrote:
On Wed, 14 May 2025 20:11:00 +0100, Chris Green <cl@isbd.net> wrote:No, we already have several of those, all working still. We need
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Would a remote fob do the trick? This is from the USA but surely
something similar must be available here:
https://www.ebay.co.uk/itm/387856115928
something to stick on the outside of the garage that's (somewhat)
burglar proof but will let us open the door.
I know it’s not what you want but have you considered a simple Wi-Fi relay like the Shelly 1 to trigger the door? As long as you have your phone on
you, you can open the door.
On 14/05/2025 20:11, Chris Green wrote:
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Maybe something like a numeric keypad for a raspberry pi (or similar
micro controller board) coupled with a postage stamp size pico pi that
will require only the addition of a battery and perhaps an external transistor to switch something.
https://shop.pimoroni.com/products/rp2350-stamp?variant=53521682530683
Some python programming and some (free) development software on the
computer would be required and there are plenty of tutorials on the web.
On 15/05/2025 11:26, alan_m wrote:
On 14/05/2025 20:11, Chris Green wrote:
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Maybe something like a numeric keypad for a raspberry pi (or similar
micro controller board) coupled with a postage stamp size pico pi that
will require only the addition of a battery and perhaps an external transistor to switch something.
https://shop.pimoroni.com/products/rp2350-stamp?variant=53521682530683
Some python programming and some (free) development software on the computer would be required and there are plenty of tutorials on the web.
I bought half a dozen car key fob entry thingies from aliexpress
https://www.aliexpress.com/item/1005006141693255.html
Mostly because they were dirt cheap, not because I had a use for them.
Each signal pin goes hi or lo depending on which button was pushed
Needs 3-5V at 5mA to be on, which is a bit high for batteries, but fine
for a mains device
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Chris Green <cl@isbd.net> wrote:
I'm looking for a switch (as in am on/off switch, or even better a momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Another possibility is to use an ibutton which you can have on a key fob
and it just needs touching against an ibutton probe to activate although
each i-button has its own unique code you could use software to scan only
the unique codes for multiple ones if required.
Tricky Dicky <tricky.dicky@sky.com> wrote:
Chris Green <cl@isbd.net> wrote:As I keep saying we have lots of key-fob button devices that work
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Another possibility is to use an ibutton which you can have on a key fob
and it just needs touching against an ibutton probe to activate although
each i-button has its own unique code you could use software to scan only
the unique codes for multiple ones if required.
fine. The numeric keypad is needed when you don't have any devices
with you and/or (for example) if you want to tell someone else how to
get into the garage when you're not there.
Chris Green <cl@isbd.net> wrote:
Tricky Dicky <tricky.dicky@sky.com> wrote:
Chris Green <cl@isbd.net> wrote:As I keep saying we have lots of key-fob button devices that work
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at
somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Another possibility is to use an ibutton which you can have on a key fob >> and it just needs touching against an ibutton probe to activate although >> each i-button has its own unique code you could use software to scan only >> the unique codes for multiple ones if required.
fine. The numeric keypad is needed when you don't have any devices
with you and/or (for example) if you want to tell someone else how to
get into the garage when you're not there.
That’s when you get your mobile phone out and open it for them. ;-)
Tim+ <timdownieuk@yahoo.co.youkay> wrote:
Chris Green <cl@isbd.net> wrote:How do I know when they're there? I don't particularly want them to
Tricky Dicky <tricky.dicky@sky.com> wrote:
Chris Green <cl@isbd.net> wrote:As I keep saying we have lots of key-fob button devices that work
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only >>>>> produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at >>>>> somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Another possibility is to use an ibutton which you can have on a key fob >>>> and it just needs touching against an ibutton probe to activate although >>>> each i-button has its own unique code you could use software to scan only >>>> the unique codes for multiple ones if required.
fine. The numeric keypad is needed when you don't have any devices
with you and/or (for example) if you want to tell someone else how to
get into the garage when you're not there.
That’s when you get your mobile phone out and open it for them. ;-)
phone me when they arrive there at 3am, or for that matter when I
arrive there at 3am and my phone battery is flat.
Chris Green <cl@isbd.net> wrote:
Tim+ <timdownieuk@yahoo.co.youkay> wrote:
Chris Green <cl@isbd.net> wrote:How do I know when they're there? I don't particularly want them to
Tricky Dicky <tricky.dicky@sky.com> wrote:
Chris Green <cl@isbd.net> wrote:As I keep saying we have lots of key-fob button devices that work
I'm looking for a switch (as in am on/off switch, or even better a >>>>> momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only >>>>> produces actual locks operated by a keypad. I don't want a lock, I >>>>> want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at >>>>> somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
Another possibility is to use an ibutton which you can have on a key fob >>>> and it just needs touching against an ibutton probe to activate although >>>> each i-button has its own unique code you could use software to scan only
the unique codes for multiple ones if required.
fine. The numeric keypad is needed when you don't have any devices
with you and/or (for example) if you want to tell someone else how to
get into the garage when you're not there.
That’s when you get your mobile phone out and open it for them. ;-)
phone me when they arrive there at 3am, or for that matter when I
arrive there at 3am and my phone battery is flat.
That’s when *they* get their mobile phone out and let you know they want you to open it. Phones are handy things.
I'm looking for a switch (as in am on/off switch, or even better a
momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only
produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at >somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
On Wed, 14 May 2025 20:11:00 +0100, Chris Green <cl@isbd.net> wrote:
I'm looking for a switch (as in am on/off switch, or even better a >momentary action one) that is actuated by entering the correct
combination on a keypad.
I've tried searching for "electronic combination lock" but that only >produces actual locks operated by a keypad. I don't want a lock, I
want to switch something when the right code is entered.
Is there some magic name for such a thing? Or can anyone point me at >somewhere that sells such things?
I'm quite happy to do simple electronic assembly but I think the
numeric keypad bit needs to be ready made.
"keypad programmable entry switch"
eventually led to this and its brothers:
https://www.aliexpress.com/item/1005005872923669.html
Might be close to what you want. And it has a pinout, so some chance of checking
if it might work, and at 3.38 pounds shipped...?
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