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57 votes

Alarms on Doors that have Access to a Pool

Not the answer you are looking for, but: Loud Alarms are What You Really NEED Assuming that the premise is a sound one, that people need to be warned of unexpected/unauthorized entrance to the pool ...
manassehkatz-Moving 2 Codidact's user avatar
49 votes

Alarms on Doors that have Access to a Pool

Ask your insurer and defense lawyer Lawyering on whether this rule is really a mandate is probably a waste of time. It's a "best practice" and one easily implemented. Which will create civil and ...
Harper - Reinstate Monica's user avatar
35 votes

is it possible to turn this dumb-waiter into an elevator?

No, it can't. The design presupposes that it is only going to be used for food. It will not be robust enough or safe enough for people. Unsafe meaning, collapsing and falling down or just people ...
Rohit Gupta's user avatar
  • 6,550
27 votes

is it possible to turn this dumb-waiter into an elevator?

Forget it, this thing is a complete pile of junk. But don't take my word on it. Ask your insurance company, because I guarantee this thing is news to them. To qualify as a human-rated elevator it ...
Harper - Reinstate Monica's user avatar
21 votes

Alarms on Doors that have Access to a Pool

Based on your link, I'm assuming you live in Florida. The relevant statutes are 515.29 Residential swimming pool barrier requirements and 515.27 Residential swimming pool safety feature options; ...
Vaelus's user avatar
  • 311
19 votes
Accepted

What type of outlet has a button and small hole in the middle?

It looks a lot like a GoControl W015Z-1 Z-wave smart receptacle. See here
Mark's user avatar
  • 3,841
18 votes

Ethernet bus topology for home automation?

10Base-5 (thicknet) and 10Base-2 (thinnet) physical layers are bus topology, if you want ethernet on a bus topology. At 10 Mbit and 100 Mbit top speeds, of course. Might be a bit hard to find hardware ...
Ecnerwal's user avatar
  • 220k
15 votes

is it possible to turn this dumb-waiter into an elevator?

There's arguably no way to make this safe There's two bits for this: making it safe enough for an insurance company, which you can't do, because you aren't a licenced engineer, designing from a list ...
lupe's user avatar
  • 442
11 votes

Ethernet bus topology for home automation?

So far as I'm aware there isn't any off-the-shelf Ethernet solution that uses twisted pair wiring and allows bus (as opposed to point-to-point) topology. That said, if you can tolerate the latency, ...
Greg Hill's user avatar
  • 31.2k
10 votes

Ethernet bus topology for home automation?

Solutions exist for both automotive Ethernet and industrial Ethernet applications. The automotive PHY standard for multi-drop on a single twisted pair is 10BASE-T1S. Industrial Ethernet fakes a multi-...
user152082's user avatar
9 votes

Ethernet bus topology for home automation?

If you are really into Ethernet with the TCP/IP protocol you could consider the possibility to deploy some "power line Ethernet adapters". These can link together several local network ...
Michael Karas's user avatar
  • 65.1k
8 votes
Accepted

Inserting probe into pressurized water pipe

The usual way is to use a T with the middle outlet being vertical: With a proper fitting, you screw this hollow adapter in. Ecnerwal says in a comment it is called a "thermowell". Fill ...
bobflux's user avatar
  • 10.1k
8 votes

Is there a way to remotely control gas valve?

Yes, there are electronically controlled gas valves. A better idea might be to install a "grill timer". It's like a kitchen timer that you twist to set the time, but instead of ringing a ...
longneck's user avatar
  • 21.3k
7 votes
Accepted

My eq-3 Bluetooth Radiator Thermostat CC-RT-BLE is just showing "UPD". How can I "unbrick" it?

The official statement is that if you have no calor BT app that is currently paired, you are lost and should return the device to the dealer as broken. However, there is a way out - the following ...
Tilman Vogel's user avatar
7 votes

Ethernet bus topology for home automation?

Home automation is very low bandwidth, excluding anything that does video streams like doorbells or security cameras. As such, ethernet is overkill AND you may have a lot of home automation sensors in ...
Criggie's user avatar
  • 10.7k
7 votes

is it possible to turn this dumb-waiter into an elevator?

When I built my house, I put an elevator in between the garage and the attic to haul stuff (mostly Christmas decorations) up and down so my wife and I didn't have to drag them up and down stairs. It ...
Ed on PCR's user avatar
  • 319
6 votes

Automatic water pump for water tank

A simplification of @spicetraders answer: Pump up switch You can do this with a "pump up float switch", which operates at line voltage and thus avoids the need for a relay, separate power supply, ...
gregmac's user avatar
  • 29.1k
6 votes
Accepted

How can I control lights on a 3-way circuit with a timer?

How about a light switch with a motion sensor? They make ones that are occupancy detectors (detecting motion and then turning on), and vacancy sensors (detecting absence of motion and then turning off)...
Daniel Griscom's user avatar
6 votes

How bad is it for my A/C unit if I cut the power while it's working?

You will need to protect against short cycling the air conditioner When you turn an air conditioner compressor off, the pressure in the system does not equalize instantly -- instead, it takes a few ...
ThreePhaseEel's user avatar
6 votes

Is a distribution panel necessary when pre-wiring for internet and cable TV?

Can't speak as much to the TV part, though an awful lot of TVs now work with internet connections. But as far as the internet connection, my recommendation is to wire up CAT 5e (or better) everywhere. ...
manassehkatz-Moving 2 Codidact's user avatar
5 votes

What is the proper way to power an in wall monitor for a new construction home?

Your current plan is no good -- first off, 400.8 point 1 forbids the use of cords as a replacement for permanent wiring (stuffing a cord down a conduit certainly counts, and is also prohibited ...
ThreePhaseEel's user avatar
5 votes

How can I reduce the force required to operate double-hung windows?

The wooden framed double hung sash design dates from a time when no elderly person was ever left alone long enough to open or close a window. Families were large and any oldster who wanted a window ...
A. I. Breveleri's user avatar
5 votes
Accepted

Identifying these light switches

These are really old HAI switches (from before Leviton bought them) which use the ALC protocol over separate signaling wires. I finally found someone who could tell me that the original switches were ...
Moshe Katz's user avatar
  • 2,705
5 votes
Accepted

Do washing-machines provide a AC connector which is live when the machine is working?

No, they don't generally have such an outlet. Perhaps you are looking for an Automatic Washing Machine Shutoff Valve? These devices sense when the washing machine is using electricity and open the ...
mike65535's user avatar
  • 1,559
5 votes

Ethernet bus topology for home automation?

There are a bunch of different ways to do this: 1 8 wire ethernet cable can be split into two logical 4 wire ethernet cables. You can also use single pair ethernet. But the easiest thing is to ...
gbronner's user avatar
  • 5,688
5 votes

Ethernet bus topology for home automation?

The other consideration is find a better cable source - 8 wire/4 pair stranded cat6 UTP is not too expensive at around $170 USD/1000 foot box. If you can locate your patch panel centrally that helps ...
Criggie's user avatar
  • 10.7k
5 votes

is it possible to turn this dumb-waiter into an elevator?

The aspect of elevators that permitted widespread use is the braking mechanism. Trusting one's health to a repurposed winch without a backup seems risky, at best. If you're determined to make use of ...
fred_dot_u's user avatar
  • 11.1k
4 votes

Automatic water pump for water tank

Keeping it simple. Get a water tank float switch which is available at many hardware, farm, or marine supply stores hook it up operate your pump motor. Add a relay with appropriate contact value ...
spicetraders's user avatar
  • 1,078
4 votes
Accepted

Circuit Breaker current metering

As a long time proud user of home automation and home energy monitoring systems, I'll share my perspective and make a recommendation. I installed Efergy three years ago. I installed The Energy ...
Billy left SE for Codidact's user avatar

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