Hi, does anyone know a product/solution for a rope loop that can open itself when there is no power, and it can be locked when I put the two open ends are connected together and I set power high
robertbm04:
Hi, does anyone know a product/solution for a rope loop that can open itself when there is no power, and it can be locked when I put the two open ends are connected together and I set power high
Sure! The public restrooms at the beach are locked at 10pm each night that way. And unlocked at 7am the next morning that way. They are called electromagnets.
Paul
Thanks. But I knew that, i am looking for a much smaller sulotion that are like a buyable product
Even if you use wire rope, it can be easily cut. What really is your project?
Paul
Yes, it is not to any security project. It is for a tracking project, that can be remotely deattached. I need it to be like a rope or so, so that it can be fastened to different things
robertbm04:
Yes, it is not to any security project. It is for a tracking project, that can be remotely deattached. I need it to be like a rope or so, so that it can be fastened to different things
I guess this will be a 20 questions exercise.
Does the rope need to be continuously powered to maintain the fastening, or does it just need power to unlatch the fastener? How will it be attached to another object?
Is the rope to be detached at the end of the rope, or at some point in the length of the rope?
How many of these are needed?
Paul
Read the posting guide at the top of every page which will explain how to ask a decent question so you get a decent answer. Having people guess every last detail is not conducive to positive results.
Sorry, but it is quite hard to describe, and i am not a native English speaker... Imagine a rope around a box, that has a small thing on it so that the rope ends can be opened either remotely, or if the battery dies. I was thinking about it beeing so that if it gets power, it is locked, and if i cut the power it opens. I do not exactly know how electromagnets work, but am I right in that they don't consume power, they just need a voltage across them?? That would be great
Electromagnets consume power. Usually a lot of power, and if continuously powered, batteries don't last long.
Look for latching electric locks. Hotels use battery operated ones for doors, along with a magnetic card reader.
robertbm04:
Sorry, but it is quite hard to describe, and i am not a native English speaker... Imagine a rope around a box, that has a small thing on it so that the rope ends can be opened either remotely, or if the battery dies. I was thinking about it beeing so that if it gets power, it is locked, and if i cut the power it opens. I do not exactly know how electromagnets work, but am I right in that they don't consume power, they just need a voltage across them?? That would be great
YOu seem to have described it quite well. BUT, electrical stuff is the same the world over. SO, whatever you design or find in you language will be the same in ours.
Paul
jremington:
Electromagnets consume power. Usually a lot of power, and if continuously powered, batteries don't last long.Look for latching electric locks. Hotels use battery operated ones for doors, along with a magnetic card reader.
Thanks! Latching seems to be the solution then yes 
robertbm04:
Thanks! Latching seems to be the solution then yes
Ok, now use Google to search for "electric bicycle lock" and look at pictures until you find something that will work for you.
Paul