Hi all, just wanted to share a little project I did today.
Having had a couple of close calls with flooding, I went and bought a couple of Samsung leak sensors (https://www.samsung.com/us/smart-home/smartthings/sensors/samsung-smartthings-water-leak-sensor-gp-u999sjvlcaa/). They are affordable as well as they have that extra set of sensors on top. You see sensors? I see soldering points
Anyhow, I placed one of the sensors inside the house without modification, yet the other one needed a bit of tinkering, as I was going to monitor the sewer line with it. We have a service port for the sewer outside, hidden under a hideous plastic rock. The pictures probably speak for themselves, yet here’s a brief breakdown
- Drill two holes in the cap to fit the diameter of some regular 16 gauge stiff copper wire.
- Mounted the sensor on top using double-sided velcro.
- Cut off two pieces of copper wire long enough to stick a decent length down the sewerpipe.
(Mine was about 3 feet deep, so I settled for going half way down)
- Strip off about an inch of insulation at one end. Strip off about 1/8" at the other.
- Shape the wire ends sticking out of the cap to touch the sensor pads on top and solder them in place
(Be nimble and quick about it, you don’t want to bust the sensor by overheating it)
- If your sensor wires are longer than a few inches, you might want to consider crafting a spreader like I did.
- Optionally, epoxy the wires in place in the cap. I did it to reduce any stress on the soldering points.
- Presuming your sewer port is outside, find something to cover the contraption with, as you don’t want a false alarm next time it rains!
I suppose a snafu with this setup, is when it’s time to change the battery in about half a year, I’ll have to break out the soldering iron. I’ll probably pick up a couple of screw terminals at Fry’s before then.
McGyver Sewer Flood sensor
Sensor mounted in place
Hideous plastic rock in place. Job done.