HTTP is not the only protocol. FTP, UDP etc. are fine for robotics. WiFi hotspots are available in large cities for free. I want to create a mini device that can monitor human vitals and link to a hospital. Also, I want to do it for the sheer aggrivation of it. Also, these devices are free from USB enumeration issues. If the project is a failure, I still learned valuable knowledge and experience.
It appears that you can solder to the connector. I have not powered it, but I now have 6 pigtails soldered on to the connector (pins 1 thru 6).
I took a piece of 22 gauge stranded wire (it had 7 strands) and attached one strand to each of the surface mount legs of the connector. It took several tries. The connections to the surface mount pins are rather delicate and can move, so to keep them sound and prevent them from shorting, I mixed up a small amount of epoxy and covered the joints.
A circuit board would be better, but this was an interesting challenge. I did find a SchmartBoard
Mouser Part #: 872-202-0007-01
Manufacturer Part #: 202-0007-01
Manufacturer: SchmartBoard
Description: SO/SOP Packages SO .5mm putch
at Mouser that I think would work, but it is rather large. I might get one my next order and see if it would work out better. Has anyone tried a SchmartBoard? Do they work?
Attached is a picture (thru a magnifying glass) of the result. I should be able to tie those pigtail wires to a row of headers, then add more epoxy to protect the pigtails. This is a major hardware Kludge, but it should allow me to test. (I hope).
Post Edited (Chuck Rice) : 2/26/2009 1:07:50 PM GMT
This way, Chuck and I have two different attack angles. One way or another, this project will succeed!.
I am on my own now, eh? [noparse]:)[/noparse]
That module looks to be much easier to interface to hardware wise. It will be interesting to see what can be done with it. Maybe we can mask the differences with a wrapper object so that the propeller user can use either with common API calls.
A few months ago, I successfully integrated the Roving Networks RN-111b and ConnectBlue OWSPA311g wifi modules to the Propeller. They are both similar and fairly straightforward serial interfaces. I integrated a SC16IS760 over SPI to the propeller to provide a UART capable of 1.3mbit serial and both modules will handle this rate. However, their actual network speeds are quite limited. Offhand, I can remember the Roving Networks module to be something around 48kbytes/sec over TCP and I think I remember the ConnectBlue module to be slightly faster. My employer owns the code I wrote, but I should be able to answer questions regarding them.
There are some other interesting modules out there that I would like to try. G2 Microsystems just got FCC approval for their G2M5477 module and it promises to have a much higher throughput than the other two, including an SPI interface. I hope to have one in my hands soon.
I want this to be an open source research project. I have no intention of leaving you on your own, Let's pool our experience and code to create a solution that solves for the hardware-specific case, and a driver that solves a more generalized case. Ultimately, this can be more useful to the forum members, especially if it is well-documented and provides a base to further expand upon. Everyone has talents and technical abilities that can, if well-documented and structured, can be a fun basis for everyone to contribute.
I have dozens of SchmartBoards. They are extremely easy to solder, as they have a patented process for hand-solder flow that virtually precludes bridging and need for solder wick. Been using them for the tiniest pitch lead spacing and it works every time.
James Michael Huselton said...
I have dozens of SchmartBoards. They are extremely easy to solder, as they have a patented process for hand-solder flow that virtually precludes bridging and need for solder wick. Been using them for the tiniest pitch lead spacing and it works every time.
I dropped by ACE Electronics in Houston today and they had the SchmartBoards. I soldered the second connector I had onto the SchmartBoard. It LOOKS a lot better, but it was still pretty difficult to solder. 0.5 mm is pretty small. It is easy to get a solder bridge or a cold joint on one of the 30 pins when they are this small, no matter what you do. Were you using the EZ version or the original version. I got the non-EZ SchmartBoard. That may be why I got some bridges. I am going thru the pins one by one with my OhmMeter and have found a couple of shorts so far. I picked at the pins with an Exacto blade to find pins that did not get soldered. Too bad I do not have an X-Ray! [noparse]:)[/noparse]
Not to throw another iron in the fire because it looks like you are pursuing some good products already, but did you consider this module from Wiznet? www.wiznet.co.kr/en/pro02.php?&page=1&num=180 I have used the wired W5100 and I am working on a project to use the W5300 and I liked those products, so maybe the wi-fi solution is also good. Your thoughts?
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Timothy D. Swieter, E.I. www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope www.tdswieter.com
The reason we didn't try the WIZnet module was because it does not have FCC modular approval. You should be able to use it for hobby work, but not in any commercial product without paying for your own FCC compliance testing.
Thanks for pointing that out. I didn't realize the lack of FCC. I just talked with the Wiznet team at a show yesterday and had I realized this I would have inquired.
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Timothy D. Swieter, E.I. www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope www.tdswieter.com
Yes. The module is sitting on my bench. Had another stroke scare, but it resolved itself.
But my progress has been slow, due to my health. I was clinically dead, but i'm feeling much better now.
I wish there were a cheaper option out there... I was looking around again today... The WiFly GSX RN-131C looks pretty reasonable.
I see it for $49 and the documentation seems to make sense to me...
Comments
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JMH
I've tested with WiFi serial port emulators on mobile devices and it's not pretty.
Jim-
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Signature space for rent, only $1.
Send cash and signature to CannibalRobotics.
This is another solution a belatedly ran across www.sparkfun.com/commerce/product_info.php?products_id=8869
No fancy surface-mount tomfoolery to wank about. Totally self-contained solution.
Chuck, I live in Austin - taxes are no fun but cheap, fast delivery is.
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JMH
Post Edited (James Michael Huselton) : 2/26/2009 3:55:11 AM GMT
I took a piece of 22 gauge stranded wire (it had 7 strands) and attached one strand to each of the surface mount legs of the connector. It took several tries. The connections to the surface mount pins are rather delicate and can move, so to keep them sound and prevent them from shorting, I mixed up a small amount of epoxy and covered the joints.
A circuit board would be better, but this was an interesting challenge. I did find a SchmartBoard
at Mouser that I think would work, but it is rather large. I might get one my next order and see if it would work out better. Has anyone tried a SchmartBoard? Do they work?
Attached is a picture (thru a magnifying glass) of the result. I should be able to tie those pigtail wires to a row of headers, then add more epoxy to protect the pigtails. This is a major hardware Kludge, but it should allow me to test. (I hope).
Post Edited (Chuck Rice) : 2/26/2009 1:07:50 PM GMT
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--Steve
This way, Chuck and I have two different attack angles. One way or another, this project will succeed!.
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JMH
I am on my own now, eh? [noparse]:)[/noparse]
That module looks to be much easier to interface to hardware wise. It will be interesting to see what can be done with it. Maybe we can mask the differences with a wrapper object so that the propeller user can use either with common API calls.
There are some other interesting modules out there that I would like to try. G2 Microsystems just got FCC approval for their G2M5477 module and it promises to have a much higher throughput than the other two, including an SPI interface. I hope to have one in my hands soon.
-Craig
I want this to be an open source research project. I have no intention of leaving you on your own, Let's pool our experience and code to create a solution that solves for the hardware-specific case, and a driver that solves a more generalized case. Ultimately, this can be more useful to the forum members, especially if it is well-documented and provides a base to further expand upon. Everyone has talents and technical abilities that can, if well-documented and structured, can be a fun basis for everyone to contribute.
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JMH
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JMH
As I said above, the more the merrier! You can't just eat one
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JMH
I dropped by ACE Electronics in Houston today and they had the SchmartBoards. I soldered the second connector I had onto the SchmartBoard. It LOOKS a lot better, but it was still pretty difficult to solder. 0.5 mm is pretty small. It is easy to get a solder bridge or a cold joint on one of the 30 pins when they are this small, no matter what you do. Were you using the EZ version or the original version. I got the non-EZ SchmartBoard. That may be why I got some bridges. I am going thru the pins one by one with my OhmMeter and have found a couple of shorts so far. I picked at the pins with an Exacto blade to find pins that did not get soldered. Too bad I do not have an X-Ray! [noparse]:)[/noparse]
I hope to be ready for a smoke-test soon.
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JMH
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Timothy D. Swieter, E.I.
www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope
www.tdswieter.com
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JMH
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Timothy D. Swieter, E.I.
www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope
www.tdswieter.com
A bit off-topic. I purchased some of your warm white Lumen lighting strips. What is the current draw per strip at 12v?
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JMH
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--Steve
Propalyzer: Propeller PC Logic Analyzer
http://forums.parallax.com/showthread.php?p=788230
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JMH
Post Edited (James Michael Huselton) : 3/21/2009 4:30:34 AM GMT
---
Have you in fact got any cheese here at all?
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If you always do what you always did, you always get what you always got.
But my progress has been slow, due to my health. I was clinically dead, but i'm feeling much better now.
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JMH
I see it for $49 and the documentation seems to make sense to me...
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My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
I have the exact same module sitting on my bench!
Where, praytell, do you se it for less then $50.00?
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JMH
http://www.rovingnetworks.com/pricing.php
Or here:
http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=43979
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My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm