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.
181 questions
0 votes
0 answers
54 views
Powering an ESP32 connected to a TFT LCD screen - rechargable or non rechargable battery
I'm a beginner and I just started working with ESP32 Dev Module (that's what my Arduino IDE said it is). For my project, I need to power a 2.8" TFT LCD (ILI9341) screen. I need this setup to send ...
-1 votes
1 answer
69 views
Signal detection timing issue
I'm trying to design a circuit that would detect an AC signal from my old analog intercom ringer and create a 1second pulse upon detection and feed it towards a relay and/or a GPIO on ESP32 or similar....
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1 vote
1 answer
105 views
Driving 24 V DC DIN bistable (impulse) relay by Arduino
When I was doing reconstruction of electrical network in my apartment, I did it with possible future home automation in mind. Because of that, all my lights are driven by DIN impulse (bistable) relays ...
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0 votes
1 answer
200 views
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 ...
0 votes
2 answers
179 views
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 ...
1 vote
1 answer
71 views
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 ...
-1 votes
1 answer
241 views
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 ...
2 votes
2 answers
410 views
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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0 votes
2 answers
119 views
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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265 views
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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1 vote
3 answers
332 views
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 ...
- 143
3 votes
2 answers
628 views
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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2 votes
1 answer
728 views
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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1 vote
0 answers
62 views
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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2 votes
0 answers
725 views
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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