So in the process of repairing / replacing my garage motors we discovered one of the end stop sensors weren’t working. So the garage door wouldn’t stop make a clunk sound and then open again to the correct position.
So on a late Saturday afternoon I set out looking for a security shop that stores end stop sensors. Couldn’t find any so came home and had to use the old grey matter. I discovered that in the centre there was a magnet – so went around the house thinking how to close a magnetic circuit. After a few moments it hit me – the alarm triggers (door / window sensors, entry sensors) have a magnet and a reed switch. Installed a reed switch as an end stop on the garage motor and it worked perfectly.
Later that week went to find out the price of the sensor pack which was about R350 – and my solution costed me R10.
How reed switches work:
Read more about reed switches at http://simplisafe.com/blog/door-sensor-secrets
So at home we have the old digidoor II garage door motors. I’ve was having some trouble so found the installation manual very helpful.
Check it out here
Credits to http://www.hydrodoors.co.za/downloads.htm