Forums

microcontroller over wireless network

Started by Spinaker October 11, 2007
Hi,

I am looking for a 802.11 b/g wireless module to connect a micro
controller (atmel mega64) to the network and perform operations using
tcp/ip. I found some so far but I am not sure if they are the proper ones.
Could you please advice me on any specific products?

any constructive post would be more than welcome
Thanks in advance
Spinaker 




On Oct 12, 7:57 am, "Spinaker" <Tharre...@hotmail.com> wrote:
> Hi, > > I am looking for a 802.11 b/g wireless module to connect a micro > controller (atmel mega64) to the network and perform operations using > tcp/ip. I found some so far but I am not sure if they are the proper ones. > Could you please advice me on any specific products? > > any constructive post would be more than welcome > Thanks in advance > Spinaker
I have worked with linx RF modules for LOS communications. But, that was different from 802.11 wireless modules. I think linx technology has some modules for your query. Linx Technology - 802.11bg - AusLinx AL-95002A Wireless LAN PCMCIA Prism2/2.5/3 Karthik Balaguru
Thank you for the fast reply. that would do the job, indeed but I cannot
use a card. I was thinking about a wireless module. I found something in
lantronix. what do you think about it?
http://www.lantronix.com/device-networking/embedded-device-servers/matchport.html

Thank you

>On Oct 12, 7:57 am, "Spinaker" <Tharre...@hotmail.com> wrote: >> Hi, >> >> I am looking for a 802.11 b/g wireless module to connect a micro >> controller (atmel mega64) to the network and perform operations using >> tcp/ip. I found some so far but I am not sure if they are the proper
ones.
>> Could you please advice me on any specific products? >> >> any constructive post would be more than welcome >> Thanks in advance >> Spinaker > >I have worked with linx RF modules for LOS communications. But, that >was different from 802.11 wireless modules. > >I think linx technology has some modules for your query. > >Linx Technology - 802.11bg - AusLinx AL-95002A Wireless LAN PCMCIA >Prism2/2.5/3 > >Karthik Balaguru > >
On Oct 12, 3:11 pm, "Spinaker" <Tharre...@hotmail.com> wrote:
> Thank you for the fast reply. that would do the job, indeed but I cannot > use a card. I was thinking about a wireless module. I found something in > lantronix. what do you think about it?http://www.lantronix.com/device-net=
working/embedded-device-servers/ma...
> > Thank you > >
You cannot use a card. Then, i think you cannot go with linx. MatchPort=99 b/g - Embedded Wireless Device Server -> Looks great. Extremely affordable embedded 802.11 b/g wireless networking Wired Ethernet-to-wireless bridging Common platform form factor for a family of wired and wireless modules Bulletproof security with IEEE 802.11i-PSK,WPA-PSK, TKIP and optional 256-bit AES end-to-end encryption Full TCP/IP stack,web server and Windows deployment software Two serial channels; up to 921 Kbps data rate FCC Class B, UL and EN EMC and safety-compliant Compact: 45mm x 45mm with 40-pin 2 mm header Has nice features :):) . But i have not used this . Wireless Specifications Wireless Standards IEEE 802.11b; 802.11g Frequency Range 2.412 - 2.484 GHz Output Power 14dBm +2.0 dBm/-1.5 dBm (does not include antenna gain) Maximum Receive Sensitivity -91dBm @ 1Mbps Data Rates With Automatic Fallback 54Mbps - 1Mbps Range Up to 328 feet indoors Modulation Techniques OFDM, DSSS, CCK, DQPSK, DBPSK, 64 QAM, 16 QAM Serial Interface Two Serial Ports Interface CMOS (Asynchronous) 3.3V-level signals, rate is software selectable (300 bps to 921,000 bps) Serial Line Formats 7 or 8 data bits, 1-2 Stop bits Parity odd, even, none Modem Control DTR, DCD Flow Control XON/XOFF (software), CTS/RTS (hardware), none Network Interface Interface Wireless 802.11b, 802.11g Protocols Supported ARP, UDP, TCP, Telnet, ICMP, SNMP, DHCP, BOOTP, Auto IP, HTTP, SMTP, TFTP Management Internal web server SNMP (read only) Serial login Telnet login DeviceInstaller software Security IEEE 802.11i - PSK with AES-CCMP Encryption WPA - PSK TKIP Encryption 64/128-bit WEP Internal Web Server Serves web pages Storage capacity: 1.2 MB Architecture CPU, Memory Lantronix DSTni-EX x86 CPU, on-chip 256 KB zero wait static SRAM, 2,048 KB Flash, 16 KB Boot ROM, 8 GPIO Firmware Upgradeable via TFTP and serial port Power Consumption Average Power Consumption Data Transfer 740 mW (Low cpu); active 250 mW (Low cpu); inactive Peak Supply Current 360 mA DataTransfer Environmental Operating range,WLAN -40=B0 to +70=B0C (-40=B0 to 158=B0F) Storage range -40=B0 to +85=B0C (-40=B0 to 185=B0F) Packaging Dimensions 44.4 x 44.4 x 10.4 mm (1.75 x 1.75 x .41 in) Weight 14g Material Plastic shell, 260=B0C tolerant Included Software Web manager, Windows=AE-based DeviceInstaller configuration software and Com Port Redirector. Looks great :):) . I have not tried/used this. This is the first time i am hearing about this. But, it is up to you to decide the best one. Maybe, someone who has tried/used this for their projects in this group/internet can guide you regarding this. Karthik Balaguru
On Oct 12, 6:11 am, "Spinaker" <Tharre...@hotmail.com> wrote:
> Thank you for the fast reply. that would do the job, indeed but I cannot > use a card. I was thinking about a wireless module. I found something in > lantronix. what do you think about it?http://www.lantronix.com/device-networking/embedded-device-servers/ma... > > Thank you > > > > > > >On Oct 12, 7:57 am, "Spinaker" <Tharre...@hotmail.com> wrote: > >> Hi, > > >> I am looking for a 802.11 b/g wireless module to connect a micro > >> controller (atmel mega64) to the network and perform operations using > >> tcp/ip. I found some so far but I am not sure if they are the proper > ones. > >> Could you please advice me on any specific products? > > >> any constructive post would be more than welcome > >> Thanks in advance > >> Spinaker > > >I have worked with linx RF modules for LOS communications. But, that > >was different from 802.11 wireless modules. > > >I think linx technology has some modules for your query. > > >Linx Technology - 802.11bg - AusLinx AL-95002A Wireless LAN PCMCIA > >Prism2/2.5/3 > > >Karthik Balaguru- Hide quoted text - > > - Show quoted text -
I haved used the Lantronix WiPort in a previous project. It works great and only takes about 10 minutes to set up for a basic serial to 802.11 converter. Lantronix also has great documentation and application notes for this device so it should be a breeze to connect it to your system. Keith http://www.doubleblackdesign.com
>> - Show quoted text - > >I haved used the Lantronix WiPort in a previous project. It works >great and only takes about 10 minutes to set up for a basic serial to >802.11 converter. Lantronix also has great documentation and >application notes for this device so it should be a breeze to connect >it to your system. > >Keith >http://www.doubleblackdesign.com > >
thats nice to hear. they have a contest running and they offer the test kit with one wireless module just for 99$ http://www.lantronix.com/info/wirelesscontest/index.html I think that I ll take place to save some money. thank you both for your help
> >>> - Show quoted text - >> >>I haved used the Lantronix WiPort in a previous project. It works >>great and only takes about 10 minutes to set up for a basic serial to >>802.11 converter. Lantronix also has great documentation and >>application notes for this device so it should be a breeze to connect >>it to your system. >> >>Keith >>http://www.doubleblackdesign.com >> >> > >thats nice to hear. they have a contest running and they offer the test >kit with one wireless module just for 99$ >http://www.lantronix.com/info/wirelesscontest/index.html >I think that I ll take place to save some money. > >thank you both for your help > > >
Guys do you know how the tcp/ip conversion works? I mean that I am suposed to send tcp/ip packets and lantronix should convert them, after that the microcontroller connected to it should translate that into a command for the motors that I want to control. thank you
On Oct 21, 2:34 pm, "Spinaker" <Tharre...@hotmail.com> wrote:
> >>> - Show quoted text - > > >>I haved used the Lantronix WiPort in a previous project. It works > >>great and only takes about 10 minutes to set up for a basic serial to > >>802.11 converter. Lantronix also has great documentation and > >>application notes for this device so it should be a breeze to connect > >>it to your system. > > >>Keith > >>http://www.doubleblackdesign.com > > >thats nice to hear. they have a contest running and they offer the test > >kit with one wireless module just for 99$ > >http://www.lantronix.com/info/wirelesscontest/index.html > >I think that I ll take place to save some money. > > >thank you both for your help > > Guys do you know how the tcp/ip conversion works? > I mean that I am suposed to send tcp/ip packets and lantronix should > convert them, after that the microcontroller connected to it should > translate that into a command for the motors that I want to control. > > thank you- Hide quoted text - > > - Show quoted text -
You will need to define a serial protocol within your microcontroller so that you interface your PC system (or whatever is on the other side of the wireless network) to your motors via the lantronix box. For instance you can setup the value 0x01 to mean "start motor" and 0x02 to mean "stop motor". You can then pass this value via the wireless network which will then get translated to a serial data stream (which you can define) within the Lantronix module. Your microcontroller will then need to read this serial data stream and look for either of these defined values so that it may act on them accordingly. In other words, the Lantronix device is just a transparent converter within your system. You are still responsible for developing a messaging scheme (i.e. protocol) between your two devices. Keith http://www.doubleblackdesign.com
thank you