Questions tagged [power-sources]
For questions about how a device is powered in general, where that is the primary purpose of the question.
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Wired Protocol for Home Automation
I am designing a centralised home automation system.
Specifications:
Switch / Control
Lighting
HVAC
Take inputs from
Sensors (temperature, occupancy, etc)
Physical Inputs (Switch/Buttons)
Mobile ...
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Mains circuit phase balancing relay?
I am looking for a device, like a special relay that would allow me to dynamically switch/move some of my home appliances between the 3 phases that I have on my mains circuit. Is this possible?
The ...
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Alarm system built with raspberry + sonoff rf bridge
I am developing a personal project at the end of which I should be able to create a homemade alarm system.
All this should be protected against voltage drops/failures, the whole circuit will be inside ...
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Can portable routers be connected to power supply for months without damaging their batterry?
I am looking for a solution to provide internet connectivity to my iot device through a router which would not be affected by power failures (of no more than 3 hours).
The options that I can see are ...
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All possible Wired communication protocols that also transmit power supply in IoT [closed]
I am on the lookout for Wired networks deployed in Industrial and other IoT applicable sectors which use cables to transfer Power + Data.
I am aware of:
Power over Ethernet (PoE) IEEE standard ...
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ESP32 - using 3.3V Dual relay
I have an issue- which I guess is has some power issue.
I'm using ESP32 and a 3.3v Dual relay.
My code is simple ( switch up and switch down ), and works fine.
The thing is that when all wires are ...
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1
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Does powering NodeMCU with 3.3 V also power USB-UART module?
I want to power my nodemcu module with 3.3 V.
Does powering it with 3.3 V also power USB-UART module?
If so I do not want this as it eats the battery.
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ESP32 - 5V output to operate a Relay
I'm playing around with a new ESP32 flashed with Micropython from eBay in order to replace a Rpi Zero W. Am I missing the 5v output? I need it to operate a Relay.
Can a 5vDC Relay be operated as ...
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1
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Solar panel + battery power for IoT device with 802.11n [closed]
I've only got basic skills but i am trying to hack together an ESP32 + temperature sensor to send periodic readings out via Wi-Fi. I've managed to get the board to connect to Wi-Fi, read the sensor, ...
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How mature is massive MIMO energy harvesting (in the 3GPP standards)?
About a year ago I attended a presentation where it was explained that a successful and thorough proof-of-concept for LTE massive MIMO had been conducted and was hopefully going to make it to into 5G1....
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ESP8266 with ethernet connection
I was wondering if someone knows a way to convert a ESP8266 to non-WiFi. I.e. have it connected through Ethernet, preferably with PoE possibility.
Reason for asking: My plan is to have sensors in a ...
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