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2004-12-06 by jeronimoavelar
Hi List , I am with a request of a client to construct 20 small terminals (keypad + lcd 16x2 ) using microcontrollers conected to a central server via a low-cost wireless link (simultaneous use). What kind of multinode radio link do you suggest to use? Is there any one using zigbee that could tell something about it? Thanks in advance , Jeronimo.
2004-12-06 by James Russo
Here are some companies to check out:
RFM (RF monolithics) http://www.rfm.com/
ChipCon http://www.chipcon.com/
and LINX technologies. http://www.linxtechnologies.com/
The LINX modules are very easy to use. Most of these you will need to
design your own media access control to prevent collisions, etc.
hope this helps.
-jr
jeronimoavelar wrote:> > Hi List , > I am with a request of a client to construct 20 small terminals > (keypad + lcd 16x2 ) using microcontrollers conected to a central > server via a low-cost wireless link (simultaneous use). > What kind of multinode radio link do you suggest to use? > Is there any one using zigbee that could tell something about it? > Thanks in advance , > Jeronimo. > > > > > > *Yahoo! Groups Sponsor* > ADVERTISEMENT > click here > <http://us.ard.yahoo.com/SIG=129h8dbk7/M=298184.5639630.6699735.3001176/D=groups/S=1706554205:HM/EXP=1102443330/A=2434971/R=0/SIG=11eeoolb0/*http://www.netflix.com/Default?mqso=60185400> > > > > ------------------------------------------------------------------------ > *Yahoo! Groups Links* > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/AVR-Chat/ > > * To unsubscribe from this group, send an email to: > AVR-Chat-unsubscribe@yahoogroups.com > <mailto:AVR-Chat-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > >
2004-12-06 by jeronimoavelar
Thanks for the links , the hardware part is ok but I don´t have experience with the protocol stuff that is needed for this project . Is there any tutorial or ready-to-use code for the wireless protocol that i can use ? Jeronimo. --- In AVR-Chat@yahoogroups.com, James Russo <jr@h...> wrote: > Here are some companies to check out: > > RFM (RF monolithics) http://www.rfm.com/ > ChipCon http://www.chipcon.com/ > and LINX technologies. http://www.linxtechnologies.com/ > > The LINX modules are very easy to use. Most of these you will need to > design your own media access control to prevent collisions, etc. > > hope this helps. > > -jr > > jeronimoavelar wrote: > > > > > Hi List , > > I am with a request of a client to construct 20 small terminals > > (keypad + lcd 16x2 ) using microcontrollers conected to a central > > server via a low-cost wireless link (simultaneous use). > > What kind of multinode radio link do you suggest to use? > > Is there any one using zigbee that could tell something about it? > > Thanks in advance , > > Jeronimo. > > > > > > > > > > > > *Yahoo! Groups Sponsor* > > ADVERTISEMENT > > click here > > <http://us.ard.yahoo.com/SIG=129h8dbk7/M=298184.5639630.6699735.300117 6/D=groups/S=1706554205:HM/EXP=1102443330/A=2434971/R=0/SIG=11eeoolb0/ *http://www.netflix.com/Default?mqso=60185400> > > > > > > > > ------------------------------------------------------------------ ------ > > *Yahoo! Groups Links* > > > > * To visit your group on the web, go to: > > http://groups.yahoo.com/group/AVR-Chat/ > > > > * To unsubscribe from this group, send an email to: > > AVR-Chat-unsubscribe@yahoogroups.com > > <mailto:AVR-Chat-unsubscribe@yahoogroups.com? subject=Unsubscribe>
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2004-12-06 by Qboll
Hi, I use this one with home made Multipoint protocol for my home automation: http://www.lprs.co.uk/pdf_directory/23861049807229.pdf Nice and simple to use. Only negative is the delay of ca. 25ms between send (master) and receive (slaves). Greetings Pascal
-----Original Message-----
From: James Russo [mailto:jr@halo3.net]
Sent: maandag 6 december 2004 19:21
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] Multinode Radio Link
Here are some companies to check out:
RFM (RF monolithics) http://www.rfm.com/
ChipCon http://www.chipcon.com/
and LINX technologies. http://www.linxtechnologies.com/
The LINX modules are very easy to use. Most of these you will need to
design your own media access control to prevent collisions, etc.
hope this helps.
-jr
jeronimoavelar wrote:
>
> Hi List ,
> I am with a request of a client to construct 20 small terminals
> (keypad + lcd 16x2 ) using microcontrollers conected to a central
> server via a low-cost wireless link (simultaneous use).
> What kind of multinode radio link do you suggest to use?
> Is there any one using zigbee that could tell something about it?
> Thanks in advance ,
> Jeronimo.
>
>
>
>
>
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<http://docs.yahoo.com/info/terms/> Service.2004-12-07 by Joe Tsang
Hi,
anyone is interested in 2.4GHz analog type RF modules ?
2 types: audio-only & audio-video.
(note: Europe's #1 or #2 electronic giant will put in their new models. Asia's top-5
audio makers using in their wireless speakers).
(note: already CE approved)
audio-only module price: 1 pc = US$35 / pc 5 pc = US$30 / pc 10 pc = US$27 / pc
(100 pc, 1,000 pc price negotiable)
Spec as follows:
Audio-only modules:
2.4G Technology
Wireless 2.4GHz Audio Module Transmitter : AU-TX1020
Receiver : AU-RX1020
TECHNICAL SPECIFICATION
Parameter Specification
Transmit Frequency 2.4GHz(2400MHz) ISM band
2.4000 to 2.4835 GHz
No license required
Transmit Power 10mW
No. of simultaneous transit frequencies Up to 4 units in same area
Channel 1 2414.5 MHz
Channel 2 2434.5 MHz
Channel 3 2450.5 MHz
Channel 4 2468.5 MHz
Channel selection Slide/Rotary switch channel select
Audio modulation type FM modulation
left/right subcarriers
Range of operation 0 to 100 meters
through walls and floors
No. of audio channel Stereo (left and right)
Audio performance specification
Frequency response 50 Hz to 22KHz ��3dB
Signal to noise ratio �r48dB @ 25 meters
�r45dB @ 100 meters
Channel separation �r52dB (left to right channel isolation)
Total harmonic distortion noise ��1%
Phase response Linear phase maintains Pro-logic signal
Audio interface
Transmit left and right input Unbalance, high impedance 1Vp-p
Receive left and right output Unbalance, high impedance 1Vp-p
Muting High
Power TX
Operating voltage 5 VDC
Current (typical) 220mA
Power RX
Operating voltage 5 VDC
Current (typical) 180mA
Operating temperature 0 ~ 60�Jambient temperature
This specification is subject to change without prior notice.
Thanks !
Jo Zeng
Tel: 852-9159-8489 (HK, China)
jeronimoavelar <jeronimoavelar@yahoo.com.br> wrote:
Hi List ,
I am with a request of a client to construct 20 small terminals
(keypad + lcd 16x2 ) using microcontrollers conected to a central
server via a low-cost wireless link (simultaneous use).
What kind of multinode radio link do you suggest to use?
Is there any one using zigbee that could tell something about it?
Thanks in advance ,
Jeronimo.
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Meet the all-new My Yahoo! � Try it today!2004-12-07 by John Samperi
At 05:49 PM 6/12/04 -0800, you wrote:
> Hi, anyone is interested in 2.4GHz analog type RF modules ? &
>audio-video.
This would be ideal if some small ammount of data could also be sent
with the audio (no video required).
Regards
John Samperi
******************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495 Fax (02) 9674-8745
Email: samperi@ampertronics.com.au
Website http://www.ampertronics.com.au
* Electronic Design * Custom Products * Contract Assembly
******************************************************2004-12-07 by Joe Tsang
I am afraid that analog RF module (2.4GHz) can only transmit
analog signal.
Maybe a 2.4GHz digital RF module that could do the job of
transmitting audio signal together with data ?
I also have a pre-liminary digital RF module trsansmitting signal
at 1.5Mbps data rate.
Info as below:
<<<
Preliminary
1.5 Mbps Wireless Digital Audio Module
44.1KHZ, 16-bit, Digital Wireless Audio
General Description Key Features
�� is a Wireless Stereo Headphone Module �� 16-bit digital stereo sampling at 44.1KHz giving high
operating in the unlicensed 2.4GHz ISM radio fidelity audio
frequency (RF) band. Providing compact design �� 12 selectable co-existing channels
for wireless, cost-saving and high fidelity digital �� 2 buffer size (time latency) selections:
stereo headphone solution. (12.5ms and 100ms)
�� processes audio data sampled at 44.1KHz �� Additional 2-ways data transfer of up to 14.4Kbps
in 16-bit pulse code modulation (PCM) format providing for remote keying or control purpose
digital CD audio quality. �� Build-in audio compression and decompression
�� An improved audio compression algorithm (ADPCM) is (improved ADPCM)
applied to highly utilize the allocated transmission �� Time-division-duplex communication design bandwidth and maintain the fidelity of sound. with error correction
�� also provides 2-way data transfer for �� Point-to-point wireless transmission
remote keying or control purpose at speed of �� Low operating and standby current
14.4 Kbps. �� Plug and play module design.
Application: ideal for all audio entertainment units such as headphones, home theatre systems, outdoor, speakers, and public address systems.
Technical Specification
Master:
�� Audio transmission method: Digital sampled at 44.1 KHz in 16-bit pulse code modulation (PCM).
�� Transmitter frequency: Unlicensed 2.4GHz ISM RF band.
�� Transmitted data rate: 1.5 Mbps
�� Signal-to-noise ratio: 95dB
�� Channel separation: 100dB
�� Harmonic distortion: -90dB
�� Error correction: 1/2 rate FEC
�� Transmitter output power: 1mW
�� Transmitter operating range: max.200 ft. line of sight, max. 50 ft. through walls and ceiling
Slave:
�� Type: dynamic, closed
�� Operating time: max. 15 hours with two AA batteries
�� Frequency response: 10 Hz to 24 KHz
2.4G Technology
Wireless Digital Audio Module
Analog-In Digital-Out Master set
Digital-In Analog-Out Slave
Terms and Conditions :
Sample charges : USD80.00/set with demo-kit
Other qty: 10 set = US$60/set 100 set = US$50 / set
(more qty price negotiable)
<<<
Thanks !
Jo Zeng
John Samperi <samperi@ampertronics.com.au> wrote:
At 05:49 PM 6/12/04 -0800, you wrote:
> Hi, anyone is interested in 2.4GHz analog type RF modules ? &
>audio-video.
This would be ideal if some small ammount of data could also be sent
with the audio (no video required).
Regards
John Samperi
******************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495 Fax (02) 9674-8745
Email: samperi@ampertronics.com.au
Website http://www.ampertronics.com.au
* Electronic Design * Custom Products * Contract Assembly
******************************************************
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Yahoo! Mail - Find what you need with new enhanced search. Learn more.2004-12-23 by Phillip Vogel
This used to work, but since I upgraded winavr and changed to mega128
(used to be mega162), my interrupt vector table is empty, like this:
00000000 <__vectors>:
0: 0c 94 6e 01 jmp 0x2dc
4: 0c 94 8b 01 jmp 0x316
8: 0c 94 8b 01 jmp 0x316
c: 0c 94 8b 01 jmp 0x316
10: 0c 94 8b 01 jmp 0x316
14: 0c 94 8b 01 jmp 0x316
18: 0c 94 8b 01 jmp 0x316
1c: 0c 94 8b 01 jmp 0x316
20: 0c 94 8b 01 jmp 0x316
24: 0c 94 8b 01 jmp 0x316
28: 0c 94 8b 01 jmp 0x316
2c: 0c 94 8b 01 jmp 0x316
30: 0c 94 8b 01 jmp 0x316
34: 0c 94 8b 01 jmp 0x316
38: 0c 94 8b 01 jmp 0x316
3c: 0c 94 8b 01 jmp 0x316
40: 0c 94 8b 01 jmp 0x316
44: 0c 94 8b 01 jmp 0x316
48: 0c 94 8b 01 jmp 0x316
4c: 0c 94 8b 01 jmp 0x316
50: 0c 94 8b 01 jmp 0x316
54: 0c 94 8b 01 jmp 0x316
58: 0c 94 8b 01 jmp 0x316
5c: 0c 94 8b 01 jmp 0x316
60: 0c 94 8b 01 jmp 0x316
64: 0c 94 8b 01 jmp 0x316
68: 0c 94 8b 01 jmp 0x316
6c: 0c 94 8b 01 jmp 0x316
70: 0c 94 8b 01 jmp 0x316
74: 0c 94 8b 01 jmp 0x316
78: 0c 94 8b 01 jmp 0x316
7c: 0c 94 8b 01 jmp 0x316
80: 0c 94 8b 01 jmp 0x316
84: 0c 94 8b 01 jmp 0x316
88: 0c 94 8b 01 jmp 0x316
Snips from my source file:
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/signal.h>
/* Interrupt handlers */
SIGNAL(SIG_USART0_RECV)
{
...code here...
}
SIGNAL(SIG_USART0_DATA)
{
...code here...
}
Like I said, this all worked last week with an older version of winavr
and a mega162. The code compiles with no errors or warnings. What am I
missing here?
Thanks,
Phil2004-12-24 by Brian Dean
On Thu, Dec 23, 2004 at 03:40:20PM -0500, Phillip Vogel wrote: > This used to work, but since I upgraded winavr and changed to mega128 > (used to be mega162), my interrupt vector table is empty, like this: > SIGNAL(SIG_USART0_RECV) > SIGNAL(SIG_USART0_DATA) Change 'USART0' to 'UART0' and you should be good. -Brian -- Brian Dean BDMICRO - ATmega128 Based MAVRIC Controllers http://www.bdmicro.com/
2004-12-24 by Hamid reza Kabiri
Hello How I can program mega64? Thanks for help me.
2004-12-24 by Phillip Vogel
Thanks - I got that yesterday afternoon on the avr-gcc list. This seems like an inconsistency in the header files that should be fixed. Or, perhaps it's something that should be addressed by the preprocessor - giving warnings on undefined macros (though I have no idea how to implement that). Thanks again. Phillip
> -----Original Message----- > From: Brian Dean [mailto:bsd@bdmicro.com] > Sent: Friday, December 24, 2004 12:01 AM > To: AVR-Chat@yahoogroups.com > Subject: Re: [AVR-Chat] Where did my interrupt vectors go? > > > > > On Thu, Dec 23, 2004 at 03:40:20PM -0500, Phillip Vogel wrote: > > > This used to work, but since I upgraded winavr and changed > to mega128 > > (used to be mega162), my interrupt vector table is empty, like this: > > > SIGNAL(SIG_USART0_RECV) > > > SIGNAL(SIG_USART0_DATA) > > Change 'USART0' to 'UART0' and you should be good. > > -Brian > -- > Brian Dean > BDMICRO - ATmega128 Based MAVRIC Controllers http://www.bdmicro.com/ > > > ------------------------ Yahoo! Groups Sponsor > --------------------~--> > Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. > Now with Pop-Up Blocker. Get it for free! > http://us.click.yahoo.com/L5YrjA/eSIIAA/yQL> SAA/dN_tlB/TM > > > -------------------------------------------------------------- > ------~-> > > > Yahoo! Groups Links > > > > > > > > >
2004-12-24 by Brian Dean
On Fri, Dec 24, 2004 at 07:25:07AM -0500, Phillip Vogel wrote: > Thanks - I got that yesterday afternoon on the avr-gcc list. This seems > like an inconsistency in the header files that should be fixed. Actually, the GCC header files merely follow the nomenclature in the datasheets. The datasheet for the ATmega162 calls the interrupt vector 'USART0', while the datasheet for the ATmega128 calls it 'UART0'. If there is inconsistancy, it is in the datasheets. -Brian -- Brian Dean BDMICRO - ATmega128 Based MAVRIC Controllers http://www.bdmicro.com/
2004-12-25 by Phillip Vogel
> -----Original Message----- > From: Brian Dean [mailto:bsd@bdmicro.com] > Sent: Friday, December 24, 2004 11:00 AM > To: AVR-Chat@yahoogroups.com > Subject: Re: [AVR-Chat] Where did my interrupt vectors go? > > > > On Fri, Dec 24, 2004 at 07:25:07AM -0500, Phillip Vogel wrote: > > > Thanks - I got that yesterday afternoon on the avr-gcc list. This > > seems like an inconsistency in the header files that should > be fixed. > > Actually, the GCC header files merely follow the nomenclature > in the datasheets. The datasheet for the ATmega162 calls the > interrupt vector 'USART0', while the datasheet for the > ATmega128 calls it 'UART0'. If there is inconsistancy, it is > in the datasheets. Or not... The datasheet I'm looking at for the 128 ,ATmega128 (2467M-AVR-11/04), refers to "USART" 136 times (including "Dual Programmable Serial USARTs" in the features on the first page, and "UART" 7 times, two of which are in the section "AVR USART vs. AVR UART Compatibility - The USART is fully compatible with the AVR UART regarding..." Did this change recently? This is my first job with a a mega128 (I like it). Phillip www.VisualConductor.com
2004-12-25 by Brian Dean
On Fri, Dec 24, 2004 at 08:12:46PM -0500, Phillip Vogel wrote: > Or not... > > The datasheet I'm looking at for the 128 ,ATmega128 (2467M-AVR-11/04), > refers to "USART" 136 times (including "Dual Programmable Serial USARTs" > in the features on the first page, and "UART" 7 times, two of which are > in the section "AVR USART vs. AVR UART Compatibility - The USART is > fully compatible with the AVR UART regarding..." Doh! Indeed you are correct. My bad. My eyes must have deceived me earlier - I specifically went to the interrupt vector table, page 56 to check. Somehow I went away with "UART" but it clearly says "USART". (Mental note - schedule eye exam.) I agree that the header files appear to be inconsistant. Strangly, the only parts that are referred to as "USART" are the ATmega169 and the ATmega162. Looks like all the other parts use "UART." > Did this change recently? This is my first job with a a mega128 (I > like it). No change - as I mentioned, I read the datasheet incorrectly. Sorry about that. And to agree with you, the mega128 is indeed quite nice - I like it alot :-) (See sig). -Brian -- Brian Dean BDMICRO - ATmega128 Based MAVRIC Controllers http://www.bdmicro.com/
2005-01-23 by Franco
Hi!! I buy a Zire 21 from Palm, this device have a realy big procesor but the palm developers forgets about us. Don't have Serial Port!! only a USB and a IRDA port. Now IRDA port isn't connected to the serial device of the palm and emulate the IRDA protocol in a software layer like win and others?? The problem is to with the terminals, i download one to the zire, but this loop when i open the port, i hpo is becose this soft can give to me the table of ready devices to use. Any Idea? other sotware terminal to download to this?? Some who give me the option to set the ports?¿ I hope if i open the com is asingned to the IRDA leds, i'm right?¿ Best Regards Frank __________________________________________________ Correo Yahoo! Espacio para todos tus mensajes, antivirus y antispam ¡gratis! ¡Abrí tu cuenta ya! - http://correo.yahoo.com.ar