How to control an electric garage door lock from an Elk M1 (or other) system
There is an abundance of Garage Door posts and some write up's about monitoring garage doors here on CocoonTech.com so I decided to document what I did for others to use, modify, copy, etc...
Disclaimer: This write up is for educational purposes only.
Here's the story: (No yawning please)So...I just built a garage. I installed a Liftmaster LM3800 door Opener. It's great. It is a side mount (jackshaft) opener that works very well and is extremely quiet. It comes with an electric bolt that gets mounted on to the garage door track. The operator locks and unlocks the bolt. It works very well. So well that I decided to rip it a part and see what makes it tick as Liftmaster tech support was not very helpful. They had me on the phone for 45 minutes and basically made this locking device sound very complicated.
I ordered a new replacement unit from an online source for about $37.00 plus shipping. The part number is 12-41A6102. This one even came with the two ¼x20 button head screws (the website said screws not included) and a template for easy mounting.
I temporarily hooked up the replacement unit to the existing garage door operator. I tapped in to the bolt wiring and operated the garage door opener with a digital O Scope connected. The device operates on 13vdc from the operator and draws about 1.1 to 1.3 amps. The pulse is so quick that it was hard to get an exact maximum reading so give your self a little wiggle room with the amperage estimates.
I removed the bolt from the garage door opener and installed the unit on the workshop garage door that does not have an opener due to overhead space constraints. I followed the manufacturer's directions but I also added a few components.
I added a small reed switch and magnet to follow the status of the bolt. I used some self tappers to mount the magnet portion to the manual handle after flattening the opposite side (wall side) of the handle a bit so the magnet would sit flush on the black plastic piece. The picture shows the mounting holes and the magnet which is not mounted. If your screws are too long you may have to trim the bottom one down to be able to get to the Philips screw hidden behind the black manual operation handle. The hole to get to the screw is on the bottom. You don't have to take the handle mounting screw completely out to slide the handle off, just loosen it a bit.
Once you install the magnet, temporarily mount the bolt on the door track. Then, connect the reed switch portion to a meter and find the best location on the wall to mount it so that it has continuity when the bolt is out or locked. The reed switch is normally closed with the magnet in place.
How To Modify A Cable Box - News
There is an abundance of Garage Door posts and some write up's about monitoring garage doors here on so I decided to document what I did for others to use, modify, copy, etc Disclaimer: This write up is for educational purposes only.
We figured we'd get the usual mess of a harness that we'd have to lengthen, solder, and modify. No way, campers. When Z&M calls this a true factory harness, it means it. Other than some very minor differences between the model years that we were
Microsoft already works with some European cable companies that offer the console as a set-top box to customers. Actor Ice T came on stage to demo "Gears of War 3," in which he provided voice talent. Microsoft also is releasing a "remastered" version
Major manufacturers have long recognized the value of letting customers modify their products, a fact obvious to anyone who has ever swapped out factory-issue tires for performance treads. Many successful technology companies have encouraged
The steering system can be operated from a wireless box, allowing the captain to move to where he can best observe and modify his efforts. The vessel has dedicated labs and office space, redundant generators, a desalination system, sleeps twenty,
My digital cable box does not have an hdmi outlet. Can I watch ...
You can only watch Hd if your tv is fed directly from an Hd signal. It is doubtful that the set’s developed in digital tuner is able of receiving and decoding the broadcast Hd signals.
You really should modify your cable box to an High definition 1 or get High definition satellite.
If the coloured AV sockets are the RCA/Phono type which are red/green/blue for video and red/white for sound then you have “Part Video”. If you connect these to equivalent sockets on the tv then you will get an enhanced photograph.
If the video clip socket is a single yellow one then that is “Composite Video” and it’s use will not be much of an enhancement above something.
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How To Modify A Cable Box - Bookshelf
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How Can I Modify An Cable Box
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