Questions on the implementation of Wi-Fi (802.11) hardware. Note shopping questions are off-topic.
-2
votes
0answers
54 views
ARM board for DIY GPS [closed]
I have been experimenting with a u-blox 7 module hooked up to my laptop via USB. Now I want to try using it to build a DIY GPS receiver. But I am not sure which ARM board to go with.
Basic specs I am ...
1
vote
0answers
40 views
Arduino Uno/Freeduino Serial Monitor reports that the connected WiFi Shield isn't present [closed]
I have connected my Uno (freeduino USB 1.1) to a wifi shield but when I run a program for network scanning, the serial monitor prints:
WiFi shield not present
The code is here: ...
0
votes
0answers
42 views
Embedded project using Mux and Demux for antenna
In our current embedded project we are implementing a GPS ,GSM and Wifi Module. To connect these modules to external antenna board,separate SMA cables are used.As our design requires each of the ...
5
votes
1answer
64 views
Can I reprogram my Arduino via a wifi shield?
My Arduino is hooked up to some lights over my aquarium and I can control them from a web browser on my LAN. I wonder if I can modify the program on the Arduino without having to plug it into a ...
1
vote
2answers
71 views
Embedded system with SMA connectors
I am developing an embedded system that performs GPS and Wifi operation with separate modules for each and two SMA connectors to connect the respective antennas. Once it is being installed, is there a ...
-5
votes
2answers
81 views
What is the range of a 2dB usb wifi dongle? [closed]
For a home robotics project I need to connect my laptop to my robot's Raspberry Pi using wifi. For this to work I want to buy a simple usb wifi adapter to plug into my Raspi. I will need a range of ...
0
votes
2answers
65 views
OOC coding in Wireless Radio Mesh Network
Can anyone explain me whether OOC (i.e. optical orthogonal coding) works in radio frequency? Or only for optical/laser technology?
5
votes
1answer
121 views
Can anyone locate specs on this wifi module?
This little module was liberated from a Canon wifi enabled printer that decided not to work anymore. It appears to bear the label "Product Number: K30306" at the upper left, which naturally was the ...
1
vote
0answers
65 views
Does there exist an IP camera that has a wireless AP? [closed]
I'm trying to perform a crude mans reverse camera system in an old car, and I was wondering if there is such a device as an IP camera, that has a built in wifi access point? Not a wifi IP camera, that ...
0
votes
1answer
102 views
Problem connecting UART Wifi Module to PC
As refereed to my old question ( Connect UART WiFi module to PC ) which has been solved that days, I have a UART Wifi module ( this one ) and unfortunately I have problem again ! The point is, this ...
0
votes
3answers
112 views
A device that wirelessly, securely posts to a server in response to door opening: off the shelf or custom-make?
I am looking for an off the shelf component for a project I am currently working on. Due to the nature of the project I cannot go into much detail about the project itself, only give a high level ...
0
votes
2answers
147 views
I2C temp sensor and an Arduino wifi shield not working together
I am using an arduino wifi shield and a TMP102 with an arduino uno rev2.
With boards older than rev3 you have to add a jumper from the 3.3V to the IOREF pin for the wifi shield, see here: ...
1
vote
1answer
78 views
WiFi antenna 1T1R mode
I have a question related to 802.11n wi-fi antenna. What actually do we mean by 1T1R mode for Wi-Fi?
As per wiki, the same channel is used for Tx & Rx:
http://en.wikipedia.org/wiki/MIMO
...
0
votes
1answer
93 views
Monitoring distance between two moving objects
For a new product, I'd like some help in understanding what technology would be best for creating a wireless connection between two moving devices and having them constantly monitor the distance ...
3
votes
2answers
264 views
Cheap wifi for embedded projects
I am looking to combine a cheap wifi baseband/mac chipset with a STM32 F1 or F2 MCU to run the IP stack.
I have to use the cheap USB wifi dongles or use SDIO/SPI interface and port the drivers.
I ...
1
vote
2answers
213 views
How does TI CC3000 wifi smart config work?
The ti cc3000 wifi chip has a special smart config mode, this is to allow the initial configuration of the wifi access details.
The cc3000 wiki page gives some details on how the process works,
The ...
0
votes
0answers
70 views
Is there a wifi phy chip?
Is there a wifi phy only chip ?
In Ethernet there are phy only chip like a LAN8710A or DP83848J etc.
I know there are several wifi module product in the world. But I want phy only, for study of ...
2
votes
3answers
76 views
Connecting a simple device with my secured home wifi
I am planning on building a simple device, which retrieves information over wifi. The device shall be as cheap and simple as possible, so it won't have a keyboard or a display.
My question is: What ...
-5
votes
1answer
67 views
HELP Please WIFI I just need a question
Basically I am trying to make a Wifi Receiving Boost of Some sort but Lack the knowledge on some things.
This is a couple ideas I've had....
Strip the wire down on a usb cord and connect the ...
2
votes
1answer
180 views
WiFi antenna's shield
Newbie question:
I've an Android TV stick (Rikomagic MK802 III) and I'm having wifi signal problems. I've opened the device, and this is what I've found:
Both the wire and the shield are connected ...
5
votes
3answers
151 views
Method to configure an Embedded CPU for WiFi network w/o a physical user interface
Let's say you have a device you built that uses something like an Arduino with a Wifi shield. The intent of this device is to connect to your wifi network, and then connect to the internet and do ...
0
votes
1answer
313 views
Boosting wifi antenna with aluminum foil: ideal placement/size?
On more than one occasion I have successfully (and significantly) improved the wifi signal a desktop computer was getting simply by taking a flat sheet of aluminum foil and curving it into a ...
0
votes
1answer
103 views
low consumption wifi board [closed]
Our company is interested in composing an electronic device with the following requirements.
Can connect to the internet through wifi so we can interact with it through a web service.
Battery ...
0
votes
1answer
94 views
Could an aluminum housing and passive cooling interfere with SoC's functioning?
I took the board out of a broken tablet. The SoC on the board gets hot pretty quickly. I thought about fixing the board to an aluminum plate, so that it touches the SoC and disctributes its heat, and ...
1
vote
0answers
153 views
PIC32 read feedback from UART
I'm using a PIC32MX795F512H to set up a Roving RN-131 wifi module using UART.
I can communicate with the device but I want some feedback whether my commands are processed or not.
I basically need to ...
-5
votes
1answer
139 views
Building an embedded system [closed]
I want to build an embedded system with USB and Wifi. I am going to use USB to load configuration and code. Wifi will be used to communicate with other similar systems. I would also like to program at ...
2
votes
2answers
156 views
FCC labeling rules - repackaged tablet
I am considering taking a commercial available, FCC certified tablet (with 802.11 b/g/n) and packaging it in a plastic "clamshell" with an additional battery to prolong run time for a specialized ...
1
vote
1answer
173 views
Running Microwave Oven interupts Wifi connection. Should I worry about it? [closed]
Every time I turn on microwave oven, Wifi connection to my computer is disconnected. When the oven's done, Wifi recovers. This means the microwave somehow floats in my home when it's running. Should I ...
-2
votes
1answer
172 views
Programmable power outlets? [closed]
I've attempted to find programmable power outlets to replace the in wall ones. My goal is to replace all in the house and program them like a programmable thermostat. Ex: kids room tv enabled Saturday ...
2
votes
1answer
178 views
Adding WiFi to OSLess embedded device
I'm looking for some advice as to the best way to achieve wireless
video streaming from an OSLess embedded system we are building.
I have never done any work with WiFi before so all the help I can ...
1
vote
2answers
87 views
Using a WiFi antenna for UMTS
I'm thinking of increasing my 3G USB modem's signal reception using an antenna. I know a UMTS(2.1 GHz) antenna is recommended.
I need to know whether a WiFi (2.4 GHz) antenna will do the job (as I ...
3
votes
2answers
279 views
Does Wifi signal strength affect link speed?
If Windows says my signal strength is poor, is my bit-rate lower than if Windows says the signal strength is excellent? I have poor signal strength and I have:
1) raised my access point to clear ...
0
votes
0answers
101 views
wifi expansion tx rx issue
I am currently upgrading the wifi system in a large manor, I have upgraded the router to a dlink 2100ap with a 1W signal amp to a 10dbi antenna, the dlink 2100ap only uses one antenna so the tx and rx ...
0
votes
1answer
117 views
wifi antenna issue signal amp 10 dbi antenna
I am running a dlink 2100ap with a (30dBm) 1W signal amp to a 10 dbi antenna. I am having issues picking up the signal on my laptop, could it be possible that the amp is making the antenna broadcast ...
3
votes
1answer
132 views
AC Current Sensor to detect treadmill usage
I would like to build an AC current sensor to detect if my treadmill is being used (the treadmill would plug into my device, which is plugged into the wall). I would then like my device to tell me ...
4
votes
1answer
334 views
How does a wifi antenna work in full-metal laptops?
As far as I understand, metallic covers of devices like MacBook Air should shield the interior from electromagnetic waves rather effectively.
Even if a wifi antenna is right behind the screen, the ...
-4
votes
1answer
106 views
Options for connecting device to the internet [closed]
So I am not sure if these types of questions are allowed here but I am just looking for some general advice to get started ond a hardware project I want to work on.
A simplified version of what I ...
0
votes
4answers
281 views
Embedded web server recommendations
I have some sensor hardware that outputs serial data and want to make it into an internet appliance.
Essentially, RS232 -to- Wifi, embedded on a web server. Like routers are designed. So that I can ...
1
vote
1answer
43 views
WiFi shield not present error
I just bought the Arduino Wifi Shield. I've followed the setup instructions and uploaded their code but I get the error: "WiFi shield not present". No LEDS are ON on the Shield . I use the Arduino Uno ...
0
votes
3answers
3k views
Transmitting a video stream through a microcontroller's wifi
I'm working a a project that currently works well but this year we want to expand it by collecting data from it, independent of its current functions. We have set up an iPad App to control an Arduino ...
0
votes
2answers
119 views
Future-proofing home network cabling in a building with poor WiFi performance [closed]
I have a very frustrating home WiFi network.
The building in which I live is very (over 300 years) old and was long-ago extended on one side so that the (15"-thick) formerly-external wall is now ...
0
votes
1answer
106 views
Wireless bridge for embedded ethernet switch [closed]
I'm building a robot which has an embedded 8 port ethernet switch on it (using a KS8997 controller IC). The reason for that is, that some components like the motor controllers are controlled via ...
-1
votes
1answer
115 views
Wifi device with directional antenna and programmable power [closed]
I need to set up a cheap device for an experiment that sends Wifi signal in a single direction but also allows me to set the power level on the Wifi signal.
I've tried to find a solution and looked ...
3
votes
2answers
225 views
Adding Wifi+ Micro-controller to a device in an economical but production-able way
Is it possible to reliably and economically add Wifi+ Micro-controller(for very simple logic and GPIO) to a non-moving device? I see some wifi soc in the market too. are these a viable options? I am ...
0
votes
2answers
159 views
Two Wi-Fi adapters on a single chip
Are there any single chip solutions combining two Wi-Fi interfaces into a single chip?
I want to build a device which creates two Wi-Fi networks: the first is for the communication with a PC, and ...
6
votes
0answers
262 views
Which WiFi Module? [closed]
We've been battling for a while with the MRF24WB0 wireless (802.11 b/g) module by microchip to finish up a project, and we are now realizing that getting it to work with most routers, and using all ...
0
votes
1answer
166 views
Bluetooth or Wi-Fi or other protocol signal detector
What's the best way to have a Bluetooth/Wi-FI/other kind of protocol signal detector?
What I'm looking it's something like this:
New Bluetooth signal detected Wakes up MCU (e.g. by interrupt pin)
...
3
votes
1answer
70 views
How do remote access devices work without a cellular connection or internet
This is a sample of one such device i am talking about, i seen a wireless "external hard drive" like electronic at best buy that you can access movies from it without wifi and i have been constantly ...
7
votes
1answer
987 views
Suggestions for 1-5 km range wireless communication?
I am developing a VOIP application. Most clients use a wired Ethernet connection, but some of the clients need to have a wireless connection. Currently the core board is using:
Cortex-A8 (TI AM3359)
...
2
votes
3answers
897 views
Sending data from RN-171 in adhoc mode
First, I'd like to note that I'm a software engineer by profession and haven't had anything but trivial experience in interfacing with hardware.
With that said, I'm looking at getting a prototype ...
