Questions tagged [wifi]
Questions on the implementation of Wi-Fi (802.11) hardware. Note shopping questions are off-topic.
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What is the best antenna and cable for my project?
I am building radio controlled small submarine which includes 1 ESP32 CAM Module inside with external antenna. I would have a remote controller on my hands which also contains some microcontroller ...
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Are these antennas interchangeable?
The small rectangular antenna in the left hand side of the case came with the device (Lilygo-T-RelayS3).
The larger one outside the case came from a different device (Old Particle Photon).
I was ...
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Correct connection of a Wi-Fi board having both printed antennas and U.FL sockets
An RF part of a dual antenna Wi-Fi module from Aliexpress.
We can see coax sockets connected in parallel to printed antennas. Two external antennas and corresponding pigtails are part of the package.
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ESP32: Does PCB without copper affect the keep-out zone of the antenna?
Espressif recommends in their PCB Layout Design that the antenna is placed outside of the board, either top right or bottom right. Interestingly a placement to the top left or bottom left is not ...
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Wifi LED Smart Bulb
I'm trying to use my smart wifi bulb ESP8266 as a wireless controller for RGB LED. Currently it's a 9 W bulb works from 220 V AC.
My question is, if I disassemble the ESP8266 board from it and use it ...
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Which signals (Wi-Fi, mobile phone, and GPS) can reliably be blocked by aluminum foil?
There seems to be conflicting information regarding which signals can be effectively blocked by wrapping the device in aluminum foil.
With effectively blocked I mean block the signal as such that the ...
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ESP32 PCB Review [closed]
I am currently designing a PCB to be manufactured. This version is my attempt at a working prototype. I am new to PCB design but am open to accepting any help I can get!
My part is meant to function ...
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Trying to make a WiFi Range Extender using Skyworks
I'm trying to design a WiFi range extender that can help increase the range of RF signals from an Intel M.2 8265NGW module. Similar to how these amplifiers from sunhans and others do. I initially ...
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WiFi connectivity ceases on ESP32 when MAX3232 is powered on the same board
Since my issue could be lying anywhere, I will explain my design details a bit.
I have a 4-layer PCB. The stackup is Top-GND-PWR-Bottom.
...
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ESP32 shielding inside an inverter
I am thinking about using an ESP32 as a secondary controller for a 12 V DC to 220 V AC inverter to monitor and control overload, low battery, using relays to switch AC output, etc. The inverter will ...
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Intercepting I/O on this simple vibration alarm / glass break alarm
I got these vibration alarms, but they're far too sensitive to leave as is.
I want to use HomeAssistant or something to get a notification and decide whether to trigger the alarm, and maybe do some ...
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Why does my ESP32 suffer from wifi stuttering when is next to wifi USB dongle?
I have an ESP32 connected to Wi-Fi 2.4GHz. It is positioned next to my PC's Wi-Fi USB dongle, which is connected to the same network at 5GHz. When the PC is on (the USB dongle is active), my ESP32 ...
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Max operating temperature for PCB/Chip antennas
I'm looking for an antenna (PCB or chip), which I'd like to install in an environment that can exceed 110°C.
Here are my questions :
Should I trust the temperature ranges given for antennas? The ...
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Most efficiently adapting IPEX-MHF1 (Wifi-Card) to IPEX-MHF4 (Antenna)?
We have a lot trouble with the windows driver our Intel Wi-Fi 6E AX211 Wifi-cards. It randomly looses connection and it's a general problem, that a lot of users ...
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Shielding WiFi signal
I have a device with WiFi connectivity. I want to shield this device from the outside, so no one can connect with the device, no matter how near he stands to it.
My device has a small antenna which ...
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