Hi, could anyone tell me if it is possible to get a 12v micro switch that when pressed, and stays pressed will momentarily activate a small light bulb please.
12v micro switch
- Thread starter dstill
- Start date
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What do you mean by 'stays pressed'?
Sorry, I should have been clearer. I want to use a micro switch as my garage is very small, when I put my car in the garage I want the switch to light a bulb so I know hat the car is far enough in so I can close the garage door. Therefore the switch will stay depressed until I take my car out the next day.
Sounds like an odd situation but believe me, there is literally 10mm tolerance and I dont fancy extending my garage or swapping my car.
Sounds like an odd situation but believe me, there is literally 10mm tolerance and I dont fancy extending my garage or swapping my car.
E
EddieM
Use a tennis ball and a piece of string, tie the ball to the string, cut string to suitable length, suspend from garage ceiling at an appropriate place, when the tennis ball hits the windscreen you're in the right place, simples.
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Been there, friend's wife had this problem of small garage large car. Required a method that did not damage her car.
A string was hung from the ceiling with a magnet at the end. The magnet was just above a reed switch in a block of wood glued to the garage floor. She drove in until the car move the string enough that the magnet was no longer over the switch.
The reed switch has to be a normally closed reed switch. That is closed ( ON ) when no magnet and open ( OFF ) when the magnet is next to it.
Another switch on the garage door switched the bleeper ( instead of a lamp ) OFF when the door was shut.
A string was hung from the ceiling with a magnet at the end. The magnet was just above a reed switch in a block of wood glued to the garage floor. She drove in until the car move the string enough that the magnet was no longer over the switch.
The reed switch has to be a normally closed reed switch. That is closed ( ON ) when no magnet and open ( OFF ) when the magnet is next to it.
Another switch on the garage door switched the bleeper ( instead of a lamp ) OFF when the door was shut.
EddieM's solution is the better one.
I have an old concrete lintel left over from a job. I just drive firmly (very slowly!) up to it and I have 2" off the bumper.
PS I have no scoobie which will help the op!
PS I have no scoobie which will help the op!
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Sounds like you need a "single shot retrigger-able" timer relay. The cost of some of them is eye watering!
How handy are you with a soldering iron? A 555 timer should be able to do what you want...
http://discuss.littlebits.cc/t/how-...ulse-when-the-input-is-a-constant-on/23894/48
It might be easier to change your 12v project into a 5v one though, just use a spare USB charger to power it.
How handy are you with a soldering iron? A 555 timer should be able to do what you want...
http://discuss.littlebits.cc/t/how-...ulse-when-the-input-is-a-constant-on/23894/48
It might be easier to change your 12v project into a 5v one though, just use a spare USB charger to power it.
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