Questions tagged [wifi]
The wifi tag has no usage guidance.
17 questions
18
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3
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Can wifi signal reception be improved by opening a door?
A wifi user is in a different room than the router. The computer is having a hard time connecting and receiving the wifi signal.
Can the wifi signal from the router to the computer be improved by ...
- 509
10
votes
4
answers
13k
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Is it possible to "boost" a WiFi signal using an aluminum soda can?
I recently discovered that one of my roommates had attempted to boost the WiFi signal by cutting up a soda can and placing it near the router, like this:
My roommate was probably following an ...
- 203
3
votes
3
answers
4k
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Send sensor signals to WiFi network
I want to build a home automation system by hooking up various sensors (e.g., passive IR motion sensors, magnetic door contact switches, vibration detectors, etc.) around the house to detect things ...
- 509
2
votes
1
answer
140
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Why is WiFi increasing frequency?
WiFi at 60 GHz provides a theoretical data-rate of 7 Gbit/s. The trade-off is limited range and penetration. The main reason for this awesome data-rate is a 9 GHz bandwidth, from 66 GHz to 57 GHz. I ...
- 129
2
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1
answer
301
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RFID vs. Bluetooth vs. Wifi beacon [closed]
I want to build a small device (beacon) that can send its location (inside of a building) and can receive signals in order to output information on an LED screen. The beacon should communicate with a ...
- 129
2
votes
1
answer
437
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A 40MHz oscillator in usb wifi adapter
I disassembled a usb wifi adapter. I was surprised to see a 40MHz oscillator, when wifi works at 2.4GHz. How the output of the oscillator is scaled to the required frequency?
- 275
2
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1
answer
138
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Why is Li-Fi faster than regular wifi?
I was wondering, basicly every radio-transsmission works with electromagnetic waves which travels at the same speed whether I modulate the information with a low frequency or high frequency such as ...
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1
vote
2
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395
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High frequency TIG welding and Bluetooth or WIFI frequency
I need to work on a project where multiple objects need to exchange trough wireless protocol and they are near to High frequency TIG welding machine.
All objects works by pair (one emitter and one ...
- 143
1
vote
1
answer
143
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Interference between direct signal and reflected signal
A laptop's antenna receives signals from a Wi-Fi router in two ways:
signal falling directly on the antenna from the router, say 1 m away
signal coming from same router but bouncing off the ...
- 275
1
vote
2
answers
2k
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Why channel 1, 6 and 11 are best for Wifi communication 802.11n?
In 802.11n 2.4Ghz, the spectrum is varied from 2400Mhz to 2500Mhz and consists of 13 (or 14) channels, each channel having 20Mhz band width.
When I search google for best channel, all websites say 1,...
- 13
1
vote
0
answers
168
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Mesh Wifi Router Network for a Small Village
I was wondering if its possible to create mesh network of WiFi for relatively large area? I am talking about the size of small village (~20km2). The idea is to use centralized connectivity with enough ...
- 83
1
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0
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253
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Multiple sensor data to WiFi visualized on React Native app: Guidance [closed]
Objective: I want to connect multiple sensors to an item of equipment and visualize the data real-time on an iPad.
Mock of Desired Output:
Question: I need advice on the best methods to use to ...
- 111
0
votes
1
answer
31
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In Elevator Phone Connectivity Reuirements ASME 2019 is WIFI bridging Acceptable?
What is acceptable connectivity for an Elevator Phone system. As analog systems are going by the way side, Cellular is one option, however is it acceptable to use point to point WIFI bridging to ...
- 105
0
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0
answers
14
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Stuck on 5Ghz WiFi antenna and reach problem
I am trying to use outdoor antenna for my indoors modem. I used an stick antenna for first slot with 3 meters cord and 3 meters extension. I used omnidirectional antenna for second slot with same cord ...
0
votes
0
answers
627
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Can one connect Starlink router with the Mesh via ethernet cable?
I know that with the Starlink ethernet adapter one can connect to the router or mesh with the ethernet cable.
My question is: is it possible to connect Starlink router with the Starlink mesh via ...
- 101
0
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0
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37
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Can I use WiFi to receive video/audio sign and mobile data to connect to the internet at the same time?
I have a question about an IoT device. Can I connect my IoT device to a mobile phone using WIFI and then connect the mobile phone with the internet through 4G mobile data? My IoT device will send ...
- 1
-1
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1
answer
581
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What emits more radiation, cell network or wifi?
I've researched in the Internet but can't find any conclusive answer.
When will your phone emit more radiation, downloading 1 Mb of data from a cell network (3G, 4G) or downloading the same amount of ...
- 99