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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AC 230V voltage line detection with Sharp PC814 switch (home automation)
I want to use home automation, so I am thinking of using an input to an ESP8266 from a PC814 bi-directional optocoupler for a 230 VAC mains physical switch.
Using this scheme I don't have to modify my ...
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5V Relay, triggered with power on/off [closed]
I am new to this forum and came across it trying to find a solution for what I thought would be an easy problem to solve.
I work in custom AV installations and I was hoping to find an off-the-shelf ...
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Review of PCB design: ESP32 + two relays design review
I've completed the design of my pool timer that can turn the pump and light on/off via WiFi and would love to get my design reviewed.
At 120 V the pool light should handle 500 W. The pump is 0.5 HP. ...
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Smart Power Restore Alarm
I have a portable generator I am going to use with an interlock system, which prevents back current to the grid, to power the house during outages. Knowing I would need a power return alarm to notify ...
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How should I connect the RX and TX pins of an Arduino to a Bluetooth module?
I am working on an Arduino based Bluetooth controlled home automation using a mobile app.
When I power ON the circuit, it works fine but when I power it OFF and power it ON again I have to remove the ...
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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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How to dynamically simulate an EV plug disconnection in order to automate charging power setup
I bought a well-made Chinese charger for our Zoe ZE50 R110 electric vehicle.
It can be set to various charging levels (8,10,12,16A at 220V), but as a safety (I guess), the procedure requires me to ...
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Can I connect ten RS485 modbus kWh meters to one RJ45 modbus server? [closed]
If I have a fusebox with about ten/fifteen eastron sdm630 and Orno OR-WE-515 kWh meters with RS485 modbus, can I daisy chain ...
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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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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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Is it possible to have a universal RF receiver and transmitter (Wifi / Bluetooth)
First of I should make clear that I'm not an engineer. My friends who are helping me with this project are. But me.. well lets just say I know the basics.
Problem
I have to be honest, it's a first ...
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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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How to modify existing circuit to additionally control it from outside by raspberry?
I found a great circuit for light home automation: circuitdb.com, but I would like it to be more than a momentary light switch bricked up in the wall.I would like to control it by raspberry or arduino....
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Will this MOSFET H-bridge motor control with end of travel disable switches work?
Thank you for taking an interest.
Very very amateur here, but after a 2+ week of reading howtos and SE posts, validation would be greatly appreciated.
Context:
Control by ESP32 MCU
30 V motor is a ...
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What could be causing ESP IDF to not recognize the content of my included header files?
ESP - IDF not functioning as expected. I've been trying to work on esp32s3 and skainet using esp-idf(ide not the eclipse or vs code plugin) and I am facing this issue constantly. Issue: I have made a ...
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Crestar remote control operating frequency
I have tried very hard to find the frequency that my remote is using. I've took pictures of the inner board and the remote. Please help or guide me on how I could find the frequency.
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Is this caused by inductive kickback?
I have a remote controlled switch that's connected to a bathroom fan (220v AC, 50Hz). The switch turns the fan on without issues every time. However, when instructed to turn it off, it immediately ...
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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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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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How can I electrically isolate two 24 VAC sprinkler controllers working on the same output (master valve)?
I have an old 24-zone sprinkler controller and I'm trying to move 16 zones to a "smart" sprinkler controller. I have a master valve that has to be switched on to provide water downstream to ...
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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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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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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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Home automation: Adding relays in series vs parallel
Recently I bought an Arduino Uno to discover electronics. I am a computer science student, hence the programming part is not a problem, however, I lack some knowledge about electronics.
Now I want to ...
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12V-only (and no 110V/220V) household electrical installation [closed]
Power outlets are in 220V/110V in houses for historical reasons (light bulbs and other appliances probably required >100V voltage) but nowadays as:
we use a USB charger 220V->5V for phones, ...
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Wiring 4-wall outlets in parallel
I would just like to ask if my wirings for a power control box is correct. I am planning to power 4 independent outlets to actuate pumps and other devices on mains, and control these independent ...
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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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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 ...
Null♦
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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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What sensor to choose to track human presence indoors?
This is a hobby project about home automation. The idea is that of distributed system of cheap microcontrollers that take measurements, communicate, output data and control appliances.
One important ...
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How to monitor switch state?
Background
I am building a simple web application using raspberry as a server. I am using this raspberry also to control an arduino. A user can send commands through the browser to the raspberry, and ...
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315 MHz Receiver/Transmitter Raspberry Pi
I bought a receiver and transmitter (I can't find the link, but it says FS1000A and LR1 315.00 on it).
I also have a set of remote controlled wall outlets that operate on 315MHz according to the FCC ...
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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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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 ...
Null♦
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Wireless Home Automation 2.4GHz versus 433MHz [closed]
Project specifications
- This is an **Arduino** project
- This is supposed to be internationally applicable
I am working on a home automation project which might go into smaller production. The ...
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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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No deflection in voltage regulator but the circuit works fine [closed]
I have connected a voltage regulator (range 0- 300V) to my Air conditioner. The Air conditioner has three wires neutral,live and Earth. (I doubt if the connection is right). The Air conditioner turns ...
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Efficient temperature control for a growbox
I am making a growbox controller. It has (among other things) a heater and a temperature sensor. Heater has no temperature controls, it can be turned on/off.
The objective is to maintain temperature ...
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troubles getting serial port tv to work
i recently posted a question, but didn't had an answer (my fault :) ).
my question wasn't straight-forward and clear.
so my final goal is to communicate between nodered (raspberry-pi) and my lg tv. I'...
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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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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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Can I use an RIBU1C to switch a 110v fan?
I recently set up a millivolt switched gas heater with an Ecobee3 thermostat. I used an RIBU1C relay to accomplish this (Ecobee wants to switch a 24VAC circuit, and the gas heater wants a millivolt ...
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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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Multimeter reports voltage but no power?
I have an Insteon FilterLinc, which is an electrical line filter. It doesn't work. When I connect a lamp to the "filtered" outlet, I get no power. So I stuck multimeter probes into the filtered outlet ...
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How do I read the state of AC switch, through a microcrontroller?
I wanted to read the state of an AC switch using a microcontroller.
S1 is an SPST switch and cannot be changed.
What circuit will be required for doing this?
I'm using this for my home automation ...
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Latching relay - Remember state after power failure [closed]
I am trying to use a relay to control appliances. My arduino will trigger the relay on/off. Additional requirement is in case of power failure the relay should be able to maintain its state so that it ...
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Relay and wifi module
I'm a beginner in electronics and I am trying to do a "connected switch" with a relay and a wifi module ESP8266, but the thing is that to power the wifi module I need a second power supply ...
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Relay parallel to wall switch: Is it safe?
I am currently working on a home automation project and I have the low power electronics sorted out. My setup requires me to connect a relay to the light which is simple but my design requires me to ...
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Is printing a PLA box for electronic components safe?
not sure I'm in the good place.
I'm working on a small project, building a connected light dimmer for my home. I'm using a raspberry pi zero and an AC dimmer (this one : Universal AC MAINS Dimmer - ...
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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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