Questions tagged [smart]
The smart tag has no usage guidance.
36
questions
0
votes
2
answers
100
views
Is it safe to touch a 220/120V gate door lock transformer with my bare hands?
I use a transformer that takes 220/120V AC input and outputs 12/24V AC to the gate door lock to open it remotely with an intercom.
I need to add a smart switch to the gate and I have to get the ...
- 155
0
votes
0
answers
49
views
Contactless smart card antennas
In a contactless smart card, all the looping of the antennas, where is the sweet spot to get the most energy from the terminal?
1
vote
1
answer
78
views
Smart switch on 240 V circuit? [closed]
I plan on installing an outdoor heater that takes a 220 V power supply. Each side of the 220 V circuit powers one element in the heater, for a total of two elements. Can I put a smart switch on each ...
- 13
0
votes
2
answers
61
views
Electric panel heater to smart [closed]
I just bought a house that comes with these panels for heating.
The panel has a timer but I’d like to explore if there is any smart option. The option I initially checked is those smart WiFi plug, but ...
- 1
-2
votes
1
answer
75
views
Smart battery protector [closed]
How does this smart battery protector work?
0
votes
2
answers
187
views
Decoding unknown UART
I'm struggling with a project here. I have an Elechomes EC5501 air humidifier that I want to make "smart". When taking it apart, I found out it uses a circuit board similar in most points to ...
2
votes
1
answer
84
views
Why does S.M.A.R.T work the way it does? [closed]
According to Wikipedia :
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology; often written as SMART) is a monitoring system included in computer hard disk drives (HDDs), solid-state ...
- 129
1
vote
1
answer
147
views
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 ...
- 57
0
votes
1
answer
364
views
Arlec grid connect bulb and power points DC convert smart WiFi hack
These devices works off 240V AC.
I was looking to convert them to run off DC and keep the grid connect app function.
https://www.bunnings.com.au/arlec-9w-950lm-4000k-grid-connect-bc-smart-...
- 1
0
votes
2
answers
120
views
I don’t know what smart thermostat to use with my high voltage [closed]
I think I have 120v but not 100% sure, I don’t know what the wires do. I live in a condo with water cooling/heating furnace. Can someone help explain what the wiring means. Because I do not have a ...
- 1
0
votes
0
answers
20
views
One Channel Relay Board with NRF24 / WiFi connectivity with built in power supply
I have been looking out for a board which has a one channel relay along with some wireless connectivity such as a NRF24 module or a Wemos D1 Mini attached to it aong with a built in power supply. Is ...
- 301
0
votes
0
answers
2k
views
Using a bypass capacitor with a no-neutral smart light switch on two lamps in series?
I am considering purchasing a smart light switch which does not require a neutral wire and instead works with a bypass capacitor parallel to the load lamp. This switch would control two lamps in ...
1
vote
2
answers
296
views
Smart meters setup
I want to monitor my exported solar energy. The solar inverter (L1+N) is already connected to my mains power meter (grid) through a smart meter (SDM630), which in return, transmit RS485 data back to ...
1
vote
1
answer
3k
views
Smart light switches and 2-way switches
I am looking at having my dumb (3 and 4 gang) switches upgraded to smart switches. The biggest issue I foresee is that one of the switches is a 2-way switch.
My understanding is a 2-way switch is 2 ...
- 165
1
vote
1
answer
124
views
Can you dim already dimmed LED lights
Ive installed LED downlights in my room, these :
https://www.screwfix.com/p/lap-fixed-led-downlight-contractor-pack-white-370lm-5w-220-240v-10-pack/728fj
they are controller via a smart dimmer switch, ...
- 13
1
vote
3
answers
119
views
How to create a smart 3-way positional switch? [closed]
Looking at this switch as an example: https://www.directindustry.com/prod/tacthill-kynoppe/product-192123-1963276.html
I have a similar 3-position switch in my garage that controls a water pump. ...
- 111
0
votes
2
answers
81
views
could this be a fuse?
I was so stupid to leave a Ring rsc 516 smart charger in the rain. Hopefully, only the fuse is blown.
However, I am not sure where the fuse is?
could it be the black thing on the photo?
I did a ...
3
votes
3
answers
8k
views
Connecting S1 and S2 on SONOFF Mini to 230V
Can I connect 230V to S1 and S2 on the SONOFF Mini?
User manual:
http://dl.itead.cc/mini/MINI-user-manual%20V1.0.pdf
- 179
0
votes
2
answers
347
views
How turn off lights automatically?
I am trying to make system where I want lights to turn off automatically. It should work like that if someone kept lights on by mistake then it should turn off automatically without any human ...
1
vote
4
answers
480
views
Home automation: why is wireless more popular than data over power line? [closed]
This is a question for discussion... I have recently started looking in to home automation and "smart devices" and see a clear tendency for everything to run on WiFi, with some exceptions of bluetooth,...
- 100
0
votes
2
answers
111
views
Slow usb charger for my smart phone? [closed]
I read that the optimal charger for smartphone batteries is 3.92v (to reduce degradation). Is it possible to implement a system that allows an external "charger" to cause charging to stop at this ...
0
votes
1
answer
64
views
Smart vs Intelligent vs Adaptive vs Advance (etc) Embedded Devices [closed]
I hope my question is not off-topic here. I am asking it here because it is directly related to the hardware devices which are primarily based on MCU's. These Embedded System devices are used every ...
- 1,421
0
votes
2
answers
1k
views
Mains AC Reverse Polarity - Has this damaged my fridge/freezer PCB? [closed]
In the UK, I had a smart meter installed a few weeks ago. My 4 year old Panasonic fridge/freezer (NR-B53VW2-WB) was working fine before the electric meter switch. After the install, after the engineer ...
3
votes
2
answers
743
views
APC Smart UPS - 2700uF 40V Capacitors
Please excuse the possibly simple question but this is all a bit new to me.
I have an APC Smart UPS 1000 which has a very large/tall 2700uF 40V capacitor on the battery (24V) connector. Not knowing ...
- 41
1
vote
2
answers
379
views
How to fully shut off an LED indicator when used with a Smart Switch?
Update See added comments at end of question.
I am working on a project to implement a remotely lit indicator when triggered through a wireless connection. To make this work I am trying to use ...
- 56.4k
0
votes
0
answers
81
views
Smart grid communications
For my final project, I am looking about smart grid. What I want to know is that what kind of communication is done in smart grid and the appliances, protocols used etc.
Can I extract a data whether ...
2
votes
1
answer
1k
views
Altium paste component at a new pattern shape( like circular or ...)
I need to past the component in PCB part automatically in one new pattern shape,So is there any why to draw pattern and paste component in that pattern automatically by Altium ( similar to align ...
2
votes
2
answers
1k
views
How do you calculate the VA value of a relay?
For my capstone project I am building an outlet which can be controlled using WiFi signals.
I am having trouble finding a suitable relay for this device. The relay I first used was a latching relay (...
- 21
1
vote
1
answer
405
views
Difference is Bluetooth Smart and Bluetooth audio
My name is Raveen Baloo. I have been doing a lot of research on the types of Bluetooth module. For my project, i do need a bluetooth which will be able to have simple communication with a mobile app, ...
- 25
0
votes
1
answer
416
views
Beacon detector using microcontroller and BLE
I am looking for BLE device which can detect ibeacon or beacon module/tag.
I am interested to use microcontroller with BLE module instead of smartphone for beacon detector.
Can any one suggest where ...
- 1
0
votes
1
answer
119
views
Does ZigBee Smart Energy Profile 2.0 support meter data pushing from meters to a concentrator
I've had a look around but can't find a clear answer.
Can ZigBee Smart Energy Profile 2.0 devices send unsolicited messages to a data concentrator without a poll from the concentrator? Like ...
- 111
2
votes
2
answers
3k
views
Trying to read serial communication from smart meter with Arduino
First my compliments for this wonderful site. I'm hoping to find an answer to my problem. I've checked to find answers, however was not able to find it.
My background is somewhat technical, only with ...
- 21
0
votes
2
answers
2k
views
How exactly should I build a smart wall light switch for a smart home
I'm planning to build a smart home system and as you know smart wall light switches are a important part of it. I've been digging around for almost two weeks but still couldn't find what I'm looking ...
- 15
0
votes
1
answer
507
views
Detect sudden change in current and send signal to arduino
I am trying to make a smart power socket using Arduino.
The socket should power even high power equipments at 230 Volt 50hz through a relay.
I want my arduino to analyse the amount of current taken ...
-3
votes
1
answer
302
views
Electronic window tinting, darkening
Does anyone know a DIY project to make window glass dark/tinted electronically? (some kind of DIY foil). The goal is to turn it dark/clear with a remote. You may call it smart window :)
eg:
http://...
- 193
2
votes
2
answers
428
views
Modem to Modem via GPRS
I am working on a GPRS communication design. What I want to do to connects two modems together via GPRS. But I found that i could not connect.
I was able to connect both modems to the internet using ...
- 1,042