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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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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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1answer
46 views

Best TRIAC for zero cross detection

I already asked this question Triac BT 136 getting shorted when load is given to T1. When I referred this link, I understood rate effect is the root cause for our problem. To avoid this either we ...
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2answers
49 views

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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2answers
78 views

Automatic switch for shop vacuum

I have just finished build my table saw and now planning for integrated vacuum system for dust collection. I've designed the circuit to detect if saw motor is switched on and automatically switch ...
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1answer
35 views

Multiple lights dimming using single TRIAC zero detcetion module

We know well we can dim single lights using single TRIAC module with the help of PWM signals from controller. My question is, I want to control the lights which are placed on hall. Let us consider 15-...
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1answer
64 views

How would I open a Doorking gate and tell if it's open or not with an Arduino? [closed]

I'm a software guy trying to get into hardware with home automation, and I have an Arduino and I was wondering how the electrical circuit would look/function. The manual is here: https://www.doorking....
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0answers
92 views

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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2answers
368 views

Auto turn off switch during power outage

In my area power outages are a daily routine. And power surges, which occur when the electricity comes back, makes it even worse. To avoid damage of the electronic devices we try to unplug them ...
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1answer
40 views

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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2answers
311 views

Controlling millivolt fireplace with Wi-Fi wall switch

My whole house is setup with Wi-Fi wall switches. They're just like basic 110V wall switches, but they can be controlled via Wi-Fi. I'm in the U.S. I'd now like to enable my fireplace. The fireplace ...
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0answers
48 views

Remotely control led fairy light

I would like to find a way to control a led fairy light controller from something like raspberry pi, so that I can change the light mode without having to push the button on the controller. The ...
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1answer
361 views

How to modify a 433.92 MHz signal to a 434 MHz signal?

I have these remote controlled wall outlets (Brennenstuhl Funkschalt-Set RCS 2044 N Comfort). And I'm trying to make an arduino circuit with an RF transmitter so I can switch them on and off without ...
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1answer
59 views

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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1answer
72 views

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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1answer
38 views

2 wire to 3 wire system for ZWave

I’m looking at installing a zwave system in the UK. The relays I want use require a 3 wire system. They say most of the uk is wired via a 2 wire system This is the product http://www.vesternet.com/z-...
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2answers
96 views

What is the best way automated relay switches can work with manual switches for a two way skylight motor?

I am installing a pair of skylights and considering if I could automate them with a Raspberry pi. The same could apply to windows or blinds, so I am hoping someone has done similar. Is this a safe ...
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1answer
134 views

Calculation of active power and apparent power through sampling

I'm currently working on a power meter device based on simultaneous sampling of current and voltage values, I intend to use this system to measure the active, reactive and apparent power on a non-...
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1answer
256 views

Device to programmatically controlled USB relay/switch [closed]

(Edited to remove shopping question. I don't need recommendation of a specific product as much as I would like to know what such a device would be called.) I'm know more about programming than I do ...
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1answer
72 views

If an incandescent light is rated for 60 watts, can a LED lamp cause an amperage or heat issue in the fixture/enclosure? [closed]

This question is based on the adage "it's the amperage that kills you"... but in this case I don't want to start a fire. I have a Philips white and color light that I would like to put in a ceiling ...
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0answers
254 views

How to Transmit/Receive on 433 MHz in C

At the moment I control all my 433MHz devices via an ESP8266 connected to a generic 433MHz transmitter with a webserver on it. I just send out and receive 24bit numbers with the "RC-switch"-library ...
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1answer
148 views

How can I power a load from two separate circuit breakers?

On one circuit breaker I have a manual switch. On the second circuit breaker I have a motion sensing switch (using a mechanical relay). I have a number of lights wired in parallel as the load. The ...
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1answer
170 views

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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0answers
281 views

Reverse Engineering Panasonic AC Remote Control Circuit

I have a Panasonic air conditioner which comes with a wired remote controller CZ - RD513C attched to the wall and has no infrared. I want to make a circuit connecting to STM32F746 to automate the ...
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1answer
323 views

ESP32 is safe enough to control a door lock

It is safe to use an ESP32 (specifically DevKitC) to control a Home door lock using a relay module (or maybe a power MOSFET)? Supposing that the ESP32 is running a safe and bugfree software. on the ...
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0answers
455 views

Control 3 Speed RF Fan with Homebridge and ESP8266

I have a 3 speed fan that is controlled with an RF remote. My idea is to use an ESP-8266 Module that will be programmed with the Arduino IDE to receive http requests and with an RF transmitter ...
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3answers
3k views

Control Simple RGB LED Light Strip With ESP-01 Using Homebridge

What I am trying to do is control a simple 2m 5050 RGB Led Light Strip though a ESP-01 that receives http requests through Homebridge. I am doing this through the better-http-rgb Homebridge plugin and ...
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2answers
117 views

Transistor not switching [closed]

I've got a 2N3904 hooked up to a pin on a NodeMCU Board (3.3V logic). I am trying to short the button contacts on a fan remote to trigger the speed and such, however, when I pull the base high (3.3V) ...
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3answers
237 views

Sending digital sensor ouput over cable upto 30meters

Description: This is a DIY home automation project to use a touch panel to control mains lights. I am using a Capacitive Touch Breakout board for the AT42QT1010 touch sensor IC (see references below)...
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1answer
172 views

Are there any problems with my circuit design?

I am new to designing circuits but I have spent a lot of time researching for this project. I have been designing an automated indoor garden for my home. To save space, there will be 3 gardens stacked ...
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1answer
59 views

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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2answers
358 views

How would I use an arduino to detect the state of a dimmer switch?

I have an AC Dimmer Switch you'd normally put in a gang box and use to dim lights in your house. If I wanted to hook up this switch to an Arduino (and JUST an Arduino, NOT mains voltage), how would I ...
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2answers
432 views

Can I use a standard latching relay to switch AC for a power socket?

I'd like to remotely control a power socket. I'd like to create a circuit that opens and closes a relay, effectively turning the socket on and off. I can handle the logic and the DC, but I'm less ...
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1answer
96 views

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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3answers
884 views

Latching relay - Remember state after power failure [closed]

first off this is my second question here so pardon me for any blunders. I am trying to use a relay to control appliances. My arduino will trigger the relay on/off. Additional requirement is in case ...
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1answer
1k views

Automatically opening and closing a door

I'm working on an automatic door that runs like this: Receives an input trigger, probably a voltage input DC motor runs in one direction for x seconds to open the door Same DC motor reverses ...
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2answers
75 views

How to control a device that need to be updated over internet?

I know, the question is very vague, but I'll try to explain better. I'm working in a school project and I got interested in continuing this project after school. It's a automatic aquarium. I want to ...
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0answers
473 views

Thermometer type in electrical water heater

I'm working on my home monitoring system and already succeed with electricity consumption measurement and got closer to water system. Measuring water consumption is almost solved, but as we are ...
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2answers
107 views

How do I remove the excess wires from this 2/3 way lighting switch?

I have two sets of lights in my bedroom. There are also two light switches. One double light switch is by one door, and turns both sets of lights on or off (one switch does one set, one does the other)...
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1answer
176 views

how can i build a cheap linear actuator [closed]

I need a linear actuator for my IOT project but how do i make one and how do i use python to control it? i saw videos of people making it with glue sticks and servos but i don't think it will be ...
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2answers
1k views

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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1answer
88 views

Home-automation standard for custom devices [closed]

I'm willing to build my own home-automation system (at least partially). I haven't chosen the protocol yet. My goal is to make home-automation devices that would be compatible with controllers/...
2
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1answer
805 views

How to power ESP8266 from changing voltage

So I'm very new to electronics of all sorts, have done some basic repairs but I'm interested in learning more. The project I have in mind is to use the cheap and easily available Doit NodeMcu Lua ...
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1answer
512 views

Making a light switch timer?

I'd like to have a light switch that turns on for at most 1 hour. My idea is to put a USB charger (110AC -> 5DC) + arduino + relay inside the wall. When the switch is turned on, it will turn the ...
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1answer
152 views

Can anyone explain me this circuit?

I am trying to make a laser trip alarm circuit and found one on Electro-schematics.com,attached it the receiver circuit.I cann't understand the use of the relay(RL1) as there is a switch already ...
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5answers
7k views

How to design a AC current detection switch?

I am working on a home automation system and I need to detect if a appliance is getting power or not. Basically, I need a AC current detection switch which can be mounted on a power line and sends a ...
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3answers
414 views

Hardware for IP Camera Project

I intend building a custom IP camera for home use, project goals are: Videos are stored remotely in real time (storage somewhere else in home or cloud server) Live steaming from internet Video data ...
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1answer
145 views

How to connect Onion Omega relay board to AC110V Electric Solenoid Valve

I am a electronics newbie who wants to connect a Onion Omega to a AC110 V Electric Solenoid Valve (such as this one for example) with their Relay extension board. Do I need any capacitors/transistor/...
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1answer
166 views

Programming Intel i3 like RPi [closed]

I am building a fairly large home automation system comprising of cameras and other sensors. I experimented with a Raspberry Pi, but it simply wasn't able to handle the load. Therefore I want to know ...
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2answers
914 views

What does the circuit look like to switch two lights using two switches into four different states?

At my workplace there's a room with two entrances, each featuring a push button light switch, A and B. There are two ceiling mounted lights, 1 and 2. Switch A switches both lights on/off. Funny ...
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1answer
815 views

RS-485 bus with PoE bus

I'm working on a home automation/security system (Only in my head at this point) and stumbled upon RS-485 transceivers. using RS-485 with PoE seems to be like a great idea to keep cords to a minimum. ...