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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Is there an RTC with alarms I can use without an Arduino/microcontroller?
I have a simple project planned for which the electronics component boils down to a clock unit triggering a 555 timer twice a day. The DS3231 seems perfect for this but seemingly requires including a ...
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Controlling 230V LEDs with a single Z-Wave switch
I am trying to control two 100W LED security lights via a motion sensor. The motion sensor is a Philips Hue and runs on the Zigbee network, the LED’s are 230V.
I have purchased a Raspberry Pi and ...
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Power supply for micro-controller from 2 wire lamp switch
I'm not a professional electronics person. For some time I'm playing with the thought of adding to the existing non-smart electrical infrastructure some kind of smart traits. All lamp switches get ...
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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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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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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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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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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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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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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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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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