Questions tagged [home-automation]
Home automation is using electronic systems to control appliances and other electrical systems within a house. Examples include automatic switching of lights, air conditioning, security locks and cooking / entertainment appliances.
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Home automation using CAN bus
I am planning to make a prototype for wired home automation devices, and I am thinking of using CAN bus for communication between nodes and Gateway.
The way I am planning to build it, there is one ...
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How to properly calculate amps from home consumption metering system like Shelly EM?
I am creating a system for detailed measuring of power consumption in my home. For that I am using Shelly EM, which is using 50A hall sensor clamped over my main line (single phase 240V AC) inside my ...
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Using a wifi dry contact module (Sonoff) to increase/decrease temperature in a gas water heater touchpad
I'm a total newbie in electronics, and just started venturing in home automation.
In Brazil there are many different types of tankless water heaters, especially for bathroom faucets and shower. Mine ...
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Runaway prevention circuit for central vacuum system
My house has a central vacuum system. It consists of a central suction motor, connected to multiple inlets throughout the house via a network of pipes.
Along with the pipes is a pair of low-voltage ...
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Making my coffee maker smarter
I'm planning to add a WiFi-enabled relay (Shelly 1) to my coffee maker for some fun home automation. In this case, the coffee maker has a tactile switch labeled "brew now". I understand the ...
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Smart watchdog water alarm critique and questions
I've developed a smart circuit for the watchdog water alarm (teardown here)and I am ready to have PCBs made up. Before I do so I would like to get everyone's critique and as an amateur I do have a few ...
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Why don't LG RS232 commands work when the TV is on (only responds when off)?
I'm writing a new question after stumbling across this question which appeared to have similar symptoms:
LG RS232 Commands partially working.
As the other question noted, the power on command ...
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Water level measurement using Optical Mouse Sensor
I wonder if anyone has hacked an Optical Mouse sensor to measure water level in an overhead water tank? Its possible to read frames data from the sensor and if those frames could be processed with a ...
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How to get NodeMCU to detect an external switch closure of an unknown voltage?
I'm getting really into home automation as a side project of mine and one of the next things I would love to automate is my doorbell.
Short question: If I have a switch (momentary button in the form ...
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Automatic Power Input Selection - Home Automation (mini)-Project
I live in a developing country where electricity is not available 24/7; however, to compensate for the power outage, I have 2 other incoming power lines from third-party generators.
The thing is, ...
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Can Shelly Pro 4PM or SONOFF 4CHR3 Handle High Starting Currents of Water Circulation Pumps?
I’m interested in automating my heating system, which currently relies on four water circulating pumps (one for the buffer tank, one for the heat tank, and two for different sections of the house). My ...
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Best way to use Driveay alert output (Open Collector NPN)
I'm learning as I go on this project.
I have a beam-break driveway alert that I would like to get the output from on a device like an Arduino or Raspberry Pi and need some guidance on the best ...
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Velux controller and input panel seem to communicate via a bus wire with a pull-up without resistor, how?
I'm trying to replace a Velux input panel (WLI 130) with an ESP32 or Arduino so that I can automate the Velux windows by telling the ESP over wifi to open/close the windows. Before doing that I'm ...
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LED power usage and wiring
I'm a total beginner in electronics work and I have some questions.
I would like to fix an LED strip to the bottom of a ~2 m long IKEA shelf. I would like two runs on the bottom (one at the back of ...
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Shelly1 wiring 110v sw for buzzer along with door opener
I’ve got shelly1 wired up to allow me to remotely open my door. I’m trying to see if I can use SW to detect the buzzer (along with a custom circuit). Here’s what I have without door buzzer detection:
<...
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Easy way to get TRIAC dimming onto a typical LED strip?
I’m trying to build a light fixture which uses a 24V 30W LED strip that can be connected through mains power to a typical Lutron TRIAC wall dimmer. I can’t seem to find any type of driver product ...
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Home Automation Sensor Circuit Unexpected State
I embarked in a DIY project to replace a burnt home automation controller with a solution based on a Raspberry Pi using its GPIO inputs and outputs. I designed and built the electronics using ...
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How can I ramp up the start of a motor?
I recently have had electrical roller shutter installed on my windows. They are wired (I put a home automation system behind, based on Shelly 2.5 (wiring)). It works great, except that the motor, when ...
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How to know the status of a two way switch through MCU
My project is this one that I asked earlier (except the fact that I'll be using SPDT switches) Two way lighting
What I'm asking can the MCU detect if the circuit is closed (whether by the physical ...
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Feedback requested for my circuit (automated brewery)
I am building an automated fermentation controller for a brewery which integrates 110V and runs an Arduino with respective sensors and other valves.
Can you offer any feedback on my overall schematic ...
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How do I know if it's safe to connect the common grounds of the input signals of two garage door openers?
I have two Hormann ProMatic garage door openers, identical ones, both have a pair of built-in input connectors where anyone can use an external switch to trigger the garage doors to open/close.
My ...
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Single pole or dual pole relay for switching a 3 kW water heater?
I have bought a WiFi controlled device to control a 3 kW, 240 V water heater (immersion heater) wirelessly but despite being advertised as 15 A, it actually has a 13 A relay which has "push fit" ...
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Controlling a Wi-Fi relay switch using a "no-neutral" touch wall switch
I'm planning to install touch wall switches in my apartment. They appear to be powered by leaking current through the switched receiver (e.g. a lightbulb) – no neutral connections.
I also wanted to ...
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Faucet valve control
I'm a mechanical engineer with very few knowledge in electrical so your help is very appreciated.
I'm doing a small project which require to automatically the fill and empty a sink.
How can I ...
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running multiple loops simultaneosly
I tried google, youtube, stackexchange but couldn't find a proper answer.
I am trying to design a home automation system with arduino which need to control a fan and a light. Simply activating a relay ...
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Delaying part of circuitry
I am trying to design a board controlling the powering up of an Esp8266 with the following features
low consumption
power on at fixed interval (kind of a heartbeat)
power on, when an edge is detected ...
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Home automation/AI - welcome message
This is a home automation/AI project that I am currently figuring out details for, and currently I'm trying to figure out a way that i can detect which direction someone is walking through a door so ...
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Relay stays triggered (latched) with 2 sec interval, 50% duty cycle signal
While building a home automation system, I triggered my 5V relay through the Arduino (running the blink code, 1 second ON 1 second OFF), however my relay stays in the triggered state. Due to which the ...
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How to detect the state of a 230 VAC SPST switch?
I want a DC output of 0 V if the AC SPST is open (off state) and 5 V if the AC SPST is closed (on state.)
Please provide any circuit or solutions for this.
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Automatic Switching
I have a system that is powered by 5V and 9V, I have two supplies one is from a solar panel with an output of 9V dc and another one is a USB with an output of 5V. During the day the system is using ...
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Automation panel: what would cause a 135v input voltage?
I am building a home automation panel which is fed by 120v AC input mains power. The first connection in the panel is a GFCI breaker followed by 5v and 12v switched PSUs which power a relay board and ...
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