wireless lan components

Started by eeh in comp.arch.embedded14 years ago 3 replies

Hi, I would like to make an embedded wireless lan. But I cannot find the necessary components. Who can introduce me some components which can...

Hi, I would like to make an embedded wireless lan. But I cannot find the necessary components. Who can introduce me some components which can be bought? Thanks!


[OT] -- Wireless Access Points with Signal Strength Indication?

Started by Tim Wescott in comp.arch.embedded12 years ago 10 replies

I recently replaced my wireless router with another of the same make and model (Linksys WRT54G). In spite of the fact that it's 'the same', it...

I recently replaced my wireless router with another of the same make and model (Linksys WRT54G). In spite of the fact that it's 'the same', it seems to put out less power than the last one. The current one works fine in the house, but I run my business out of a detached garage, and the access point out there can't quite see the router. I've solved this problem before with clever anten...


Coding Wireless protocols for embedded systems

Started by ashu in comp.arch.embedded11 years ago 2 replies

Hello All: Can some one point me to a good book or material on the internet, for coding wireless protocols on embedded systems. What are...

Hello All: Can some one point me to a good book or material on the internet, for coding wireless protocols on embedded systems. What are guidelines, standard techniques, and general pitfalls etc. regs ashu


Wireless network signal strength...

Started by Roberto Hawkowski in comp.arch.embedded16 years ago 1 reply

How to read programetically (say in a C++ program) the signal strength of a wireless network adaptor card ?

How to read programetically (say in a C++ program) the signal strength of a wireless network adaptor card ?


Start Frame Delimiter

Started by ashu in comp.arch.embedded10 years ago 1 reply

Hi All, I would like to understand the real importance of "start frame delimitor" in a wireless protocol. Especially why do we need a...

Hi All, I would like to understand the real importance of "start frame delimitor" in a wireless protocol. Especially why do we need a fixed pattern like SFD when we already do some pattern matching to detect the beginning of frame in wireless? Why do some protocols have a SFD and some dont ? Is it jsut purely a matter of choice ? regs ashu


Large Wireless networks?

Started by Vladimir Vassilevsky in comp.arch.embedded12 years ago 14 replies

The task is to create a large (up to 10k nodes) ad-hoc wireless network covering the area of several sq. km, so there is a need for many...

The task is to create a large (up to 10k nodes) ad-hoc wireless network covering the area of several sq. km, so there is a need for many retransmission hops. The nodes are not moving; however the network should be able to reconfigure itself once a node is added or deleted. The communication in the network is always initiated by a single dedicated master. The master needs to collect...


Acceptance criteria for a wireless network?

Started by ElderUberGeek in comp.arch.embedded13 years ago 3 replies

Hi. I am having a wireless network developed. The implementation provides for API's to send and receive data from many nodes talking to a PC...

Hi. I am having a wireless network developed. The implementation provides for API's to send and receive data from many nodes talking to a PC over a "master" node (i.e. we are responsible for the application protocol and the contractor is responsible for the PHY/MAC/NWK layers). The deliverables are hardware "nodes" and a software component that runs on the PC and gives the application acces...


Selection of an appropriate wireless network topology

Started by Anonymous in comp.arch.embedded11 years ago 4 replies

Dear Sirs, I'm considering now my final year project on electronics eng. The project is a wireless indoor network of inexpensive low-power...

Dear Sirs, I'm considering now my final year project on electronics eng. The project is a wireless indoor network of inexpensive low-power devices, that have to communicate with a main unit, connected to PC. Following is the description of this network: 1) The number of network devices is big, say 1000-2000 2) There is no a need that the devices talk one to each other. The only necesarry ...


Wireless trigger

Started by Anonymous in comp.arch.embedded15 years ago 4 replies

We are designing a wireless trigger system for our acquisition devices. The purpose of the trigger system is to remotely start two...

We are designing a wireless trigger system for our acquisition devices. The purpose of the trigger system is to remotely start two independent systems at the same time. We are envisioning the operatior starting the two system with a "keyfob" or similar device. The latency from when the button is pressed to the systems are triggered should be less than 1s. The time difference between the tr...


AVR & RFM70 based digital wireless guitar system

Started by wzab in comp.arch.embedded9 years ago

Hi, During last weeks I've asked here a few questions regarding the wireless guitar system I was working on. Now the initial version of...

Hi, During last weeks I've asked here a few questions regarding the wireless guitar system I was working on. Now the initial version of website describing my system is available at: http://www.ise.pw.edu.pl/~wzab/wireless_guitar_system The design is FREE. Most parts are public domain, some are licensed under GPL and/or Creative Commons license. This is still a prototype version, built...


Wireless connection between mini robots

Started by Izhak in comp.arch.embedded15 years ago 6 replies

This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C4F973.26ECB9A0 Content-Type:...

This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C4F973.26ECB9A0 Content-Type: text/plain; charset="windows-1255" Content-Transfer-Encoding: quoted-printable Hi all As a student project/research adventure we are planning to build = several small robots that will be coordinated by a main brain via = wireless connection. At this point we seek a suitable m...


Small SBC help needed

Started by Anonymous in comp.arch.embedded15 years ago 5 replies

I need to develop a product and a feel that a SBC is the best for what i need to do. I need the SBC to be powerful enough to run...

I need to develop a product and a feel that a SBC is the best for what i need to do. I need the SBC to be powerful enough to run full-screen video (at 600 x 800) but also cheap. My system requirements are stereo audio outputs, CF Card/PCMCIA (for wireless networking, or similar connection for wireless networking), 2 serial ports, and LVDS outputs for video. What SBC would be best for me? Than...


Feasibility of the VERY low power wireless network?

Started by Vladimir Vassilevsky in comp.arch.embedded9 years ago 27 replies

There is a network of ~100 wireless sensors, communicating to a single host. All sensors are located within ~50..100m from the host in the...

There is a network of ~100 wireless sensors, communicating to a single host. All sensors are located within ~50..100m from the host in the typical urban environment. Ideally, it would be desirable to poll each sensor at least 10 times/sec. When polling the sensors, we have to get just several bits of the status information from each sensor. Problem: as sensors are battery powered, the...


looking for details on data format for Radio Shack wireless thermometer

Started by Mark in comp.arch.embedded15 years ago 1 reply

Hi, I am hoping to convert a RS wireless thermometer (model 63-1030 ) into a thermostat, by interpreting the received data and processing it...

Hi, I am hoping to convert a RS wireless thermometer (model 63-1030 ) into a thermostat, by interpreting the received data and processing it in a separate micro. Has anyone got any details on the protocol or code they could share? I found a bit of information in this article : www.tinaja.com/glib/muse151.pdf but I'm hoping someone may have some info on how to scale the data and c...


Wireless USB Discussion Group

Started by ratemonotonic in comp.arch.embedded13 years ago 2 replies

Hello Group , This is my first post on this group so I am really excited. I am working on Wireless USB and have some knowledge of its inner...

Hello Group , This is my first post on this group so I am really excited. I am working on Wireless USB and have some knowledge of its inner workings. But of course as with any new technology I have some Grey areas from time to time. Thus I would like to start this discussion group so I can share my knowledge with all ppl involved with WiUSB. So my first question is..... Has any one got ...


'Real time' Wireless communication (Fencing scoring)

Started by Jon S. in comp.arch.embedded16 years ago 13 replies

Hi All, I started taking fencing lessen a few months ago.I also learned also about the 'wired' kind of scoring system they use in...

Hi All, I started taking fencing lessen a few months ago.I also learned also about the 'wired' kind of scoring system they use in fencing: A switch is mounted on the wapons tip and is wired through the uniform to a cable that unrolls from the wall. Lights indicate wich switch is pressed first. My first reaction was offcoarse: why don't we do this wireless ? Ofter some searches a learn...


Wireless/powerline comms, short distance, 100 nodes

Started by Stef in comp.arch.embedded14 years ago 7 replies

Hello NG, In a machine we currently use up to 100 nodes (most installations use under 64 though) on a CAN bus. These nodes are moving along...

Hello NG, In a machine we currently use up to 100 nodes (most installations use under 64 though) on a CAN bus. These nodes are moving along rails and are connected with wire loops. For ease of installation (and node replacement) and cleaning up the wire tangle, we are investigating a wireless or power line system. The 24V DC power can be supplied with sliding contacts but due to space rest...


Wireless sensor network at 868MHz

Started by fasf in comp.arch.embedded10 years ago 3 replies

Hi, I want to realize a wireless sensor network at 868MHz: this network should be used in open ambient, so long range (and low power)...

Hi, I want to realize a wireless sensor network at 868MHz: this network should be used in open ambient, so long range (and low power) is important for me. What do you think is the better solution? About protocol: i thougth ZigBee, but i haven't found interesting solution at this range (I may be mistaken)...A standard implementation is the best solution, but non strictly necessary....For me a...


ESP8266 based digital wireless system for electric guitar

Started by Anonymous in comp.arch.embedded5 years ago 1 reply

Hi, Some time ago I have published the wireless system for electric guitar based on ATmega microcontrollers, RFM70 radio modules and CS5343 ADC:...

Hi, Some time ago I have published the wireless system for electric guitar based on ATmega microcontrollers, RFM70 radio modules and CS5343 ADC: http://wzab.cba.pl/STARE/wireless_guitar_system/index.html It seems to me, that ESP8266 may be used instead of ATmega88 and RFM70 in the transmitter, eliminating also the need of dedicated receiver (as the sound and control data will be tr


Solution for long range wireless link on ISM band?

Started by ElderUberGeek in comp.arch.embedded14 years ago 7 replies

I am looking for a solution for connecting equipment over a wireless link with a range of 2-3 Km. Should be on ISM band. Any good...

I am looking for a solution for connecting equipment over a wireless link with a range of 2-3 Km. Should be on ISM band. Any good ideas? Thanks