From: Dave H. <dhy...@gm...> - 2005-11-16 13:40:43
|
Hi, I see SparkFun has a new one: <http://www.sparkfun.com/shop/index.php?shop=3D1&cat=3D1&itemid=3D503&> Te interesting thing is that it will work with Vcc of 3.3v or Vcc of 5 v (and it's small) -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |
From: Brian G. <br...@in...> - 2005-11-16 15:41:40
|
This is the one I use: http://www.pololu.com/products/pololu/0126/ It works in with 3-5.5v range. A little more expensive, but it also breaks out all kinds of lines: DCD In "Data carrier detect"=20 RX In Asynchronous serial data receive=20 TX Out Asynchronous serial data transmit (idle high)=20 DTR Out "Data terminal ready" control output (often used with DSR)=20 GND Power Ground=20 DSR In "Data set ready" control input (often used with DTR)=20 RTS Out "Ready to send" control output (often used with CTS)=20 CTS In "Clear to send" control input (often used with RTS)=20 RI In "Ring indicator" control input=20 VCC Power Logic supply voltage (3 =96 5.5 V, externally supplied)=20 INV Out Serial port detection pin, high if serial port connected=20 TX Out Asynchronous serial data transmit, inverted (idle low) Brian Gregory -----Original Message----- From: gum...@li... [mailto:gum...@li...] On Behalf Of Dave = Hylands Sent: Wednesday, November 16, 2005 8:40 AM To: gum...@li... Subject: [Gumstix-users] RS-232 voltage shifters Hi, I see SparkFun has a new one: <http://www.sparkfun.com/shop/index.php?shop=3D1&cat=3D1&itemid=3D503&> Te interesting thing is that it will work with Vcc of 3.3v or Vcc of 5 v (and it's small) -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today Register for a JBoss Training Course. Free Certification Exam for All Training Attendees Through End of 2005. For more info visit: http://ads.osdn.com/?ad_idv28&alloc_id=16845&op=CCk _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Craig H. <cr...@gu...> - 2005-11-16 19:23:33
|
On Nov 16, 2005, at 5:40 AM, Dave Hylands wrote: > Hi, > > I see SparkFun has a new one: > <http://www.sparkfun.com/shop/index.php?shop=1&cat=1&itemid=503&> > > Te interesting thing is that it will work with Vcc of 3.3v or Vcc of 5 > v (and it's small) Now all we need is for them to have the pins laid out as GND-Tx-Vcc- Rx, then it'll stack nicely onto a breakout-gs or robostix (the hole spacing looks OK, but I guess it might need some adjustment too)! C |
From: Dave H. <dhy...@gm...> - 2005-11-16 19:40:38
|
Hi Craig, > Now all we need is for them to have the pins laid out as GND-Tx-Vcc- > Rx, then it'll stack nicely onto a breakout-gs or robostix (the hole > spacing looks OK, but I guess it might need some adjustment too)! Actually, the hole spacing is probably 0.1" which would work for the robostix, but not for the breakout-gs. If you're using a cable to join them, then it doesn't really matter. The breakout-gs is also broken because the Vcc isn't 3.3v :( -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |
From: Craig H. <cr...@gu...> - 2005-11-16 19:51:00
|
On Nov 16, 2005, at 11:40 AM, Dave Hylands wrote: > Hi Craig, > >> Now all we need is for them to have the pins laid out as GND-Tx-Vcc- >> Rx, then it'll stack nicely onto a breakout-gs or robostix (the hole >> spacing looks OK, but I guess it might need some adjustment too)! > > Actually, the hole spacing is probably 0.1" which would work for the > robostix, but not for the breakout-gs. If you're using a cable to join > them, then it doesn't really matter. > > The breakout-gs is also broken because the Vcc isn't 3.3v :( Is that still the case? I thought Gordon fixed that now. C |
From: Brian G. <br...@in...> - 2005-11-16 19:56:44
|
The breakout board that I have seems to supply 3.3v on the STUART using the wall wart 5v supply. ?? Brian Gregory -----Original Message----- From: gum...@li... [mailto:gum...@li...] On Behalf Of Craig Hughes Sent: Wednesday, November 16, 2005 2:51 PM To: gum...@li... Subject: Re: [Gumstix-users] RS-232 voltage shifters On Nov 16, 2005, at 11:40 AM, Dave Hylands wrote: > Hi Craig, > >> Now all we need is for them to have the pins laid out as GND-Tx-Vcc- >> Rx, then it'll stack nicely onto a breakout-gs or robostix (the hole >> spacing looks OK, but I guess it might need some adjustment too)! > > Actually, the hole spacing is probably 0.1" which would work for the > robostix, but not for the breakout-gs. If you're using a cable to join > them, then it doesn't really matter. > > The breakout-gs is also broken because the Vcc isn't 3.3v :( Is that still the case? I thought Gordon fixed that now. C ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today Register for a JBoss Training Course. Free Certification Exam for All Training Attendees Through End of 2005. For more info visit: http://ads.osdn.com/?ad_id=7628&alloc_id=16845&op=click _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Dave H. <dhy...@gm...> - 2005-11-16 20:37:17
|
Hi Brian, > The breakout board that I have seems to supply 3.3v on the STUART using t= he > wall wart 5v supply. ?? What revision of the board do you have? (there should be a revision/date/time stamp on the board). -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |
From: Brian G. <br...@in...> - 2005-11-16 20:50:05
|
I thought it was marked 277. (Although I don't have it in front of me right now) It has the swapped STUART and I2C labels. Brian Gregory |
From: Dave H. <dhy...@gm...> - 2005-11-16 22:34:01
|
On 11/16/05, Brian Gregory <br...@in...> wrote: > I thought it was marked 277. (Although I don't have it in front of me rig= ht > now) It has the swapped STUART and I2C labels. Hmmm. I'm pretty sure that my board has the Vcc line connected to the power jack. Maybe I got an early one and they fixed it and used the same revision number? The TxD and RxD lines are at 3.3v. I'll double check when I get home. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |
From: Craig H. <cr...@gu...> - 2005-11-16 22:45:55
|
On Nov 16, 2005, at 2:33 PM, Dave Hylands wrote: > On 11/16/05, Brian Gregory <br...@in...> wrote: >> I thought it was marked 277. (Although I don't have it in front of >> me right >> now) It has the swapped STUART and I2C labels. > > Hmmm. I'm pretty sure that my board has the Vcc line connected to the > power jack. Maybe I got an early one and they fixed it and used the > same revision number? > > The TxD and RxD lines are at 3.3v. > > I'll double check when I get home. If it's a new revision, it should definitely have a different revision number on it, unless Gordon really messed up... C |
From: Gordon K. <go...@gu...> - 2005-11-16 22:59:03
|
Craig Hughes wrote: > On Nov 16, 2005, at 2:33 PM, Dave Hylands wrote: > >> On 11/16/05, Brian Gregory <br...@in...> wrote: >>> I thought it was marked 277. (Although I don't have it in front of >>> me right >>> now) It has the swapped STUART and I2C labels. >> >> Hmmm. I'm pretty sure that my board has the Vcc line connected to the >> power jack. Maybe I got an early one and they fixed it and used the >> same revision number? >> >> The TxD and RxD lines are at 3.3v. >> >> I'll double check when I get home. > > If it's a new revision, it should definitely have a different revision > number on it, unless Gordon really messed up... > > C > > > > ------------------------------------------------------- > This SF.Net email is sponsored by the JBoss Inc. Get Certified Today > Register for a JBoss Training Course. Free Certification Exam > for All Training Attendees Through End of 2005. For more info visit: > http://ads.osdn.com/?ad_id=7628&alloc_id=16845&op=click > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Gordon K. <go...@gu...> - 2005-11-16 23:02:09
|
There were several boards which went out with a MIC5219-ADJ (leading to a Vcc = V_BATT - ) instead of using a MIC5219-3.3 There was no distinguishing version number but I thought we had posted something pointing it out at the time. Gordon > On Nov 16, 2005, at 2:33 PM, Dave Hylands wrote: > >> On 11/16/05, Brian Gregory <br...@in...> wrote: >>> I thought it was marked 277. (Although I don't have it in front of >>> me right >>> now) It has the swapped STUART and I2C labels. >> >> Hmmm. I'm pretty sure that my board has the Vcc line connected to the >> power jack. Maybe I got an early one and they fixed it and used the >> same revision number? >> >> The TxD and RxD lines are at 3.3v. >> >> I'll double check when I get home. > > If it's a new revision, it should definitely have a different revision > number on it, unless Gordon really messed up... > > C > > > > ------------------------------------------------------- > This SF.Net email is sponsored by the JBoss Inc. Get Certified Today > Register for a JBoss Training Course. Free Certification Exam > for All Training Attendees Through End of 2005. For more info visit: > http://ads.osdn.com/?ad_id=7628&alloc_id=16845&op=click > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Dave H. <dhy...@gm...> - 2005-11-17 04:09:26
|
Hi Gordon, On 11/16/05, Gordon Kruberg <go...@gu...> wrote: > There were several boards which went out with a MIC5219-ADJ (leading to > a Vcc =3D V_BATT - ) instead of using a MIC5219-3.3 > There was no distinguishing version number but I thought we had posted > something pointing it out at the time. Things make sense now. I checked my breakout-gs boards, and they have 5219BMM parts, which are the adjustable regulators. I searched the archives and couldn't find any mention of the 5219 in conjunction with the breakout-gs (there was some discussion around the robostix). So is pin 4 on the MIC5219 a no-connect? If so, I can stick a couple of resistors on and get it to give me the correct 3.3v out. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |
From: Gordon K. <go...@gu...> - 2005-11-17 05:45:54
|
Pin4 "BYP" is unconnected ono the breakout GS, so yes you could. Gordon >Hi Gordon, > >On 11/16/05, Gordon Kruberg <go...@gu...> wrote: > > >>There were several boards which went out with a MIC5219-ADJ (leading to >>a Vcc = V_BATT - ) instead of using a MIC5219-3.3 >>There was no distinguishing version number but I thought we had posted >>something pointing it out at the time. >> >> > >Things make sense now. I checked my breakout-gs boards, and they have >5219BMM parts, which are the adjustable regulators. I searched the >archives and couldn't find any mention of the 5219 in conjunction with >the breakout-gs (there was some discussion around the robostix). > >So is pin 4 on the MIC5219 a no-connect? If so, I can stick a couple >of resistors on and get it to give me the correct 3.3v out. > >-- >Dave Hylands >Vancouver, BC, Canada >http://www.DaveHylands.com/ > > >------------------------------------------------------- >This SF.Net email is sponsored by the JBoss Inc. Get Certified Today >Register for a JBoss Training Course. Free Certification Exam >for All Training Attendees Through End of 2005. For more info visit: >http://ads.osdn.com/?ad_idv28&alloc_id845&op=click >_______________________________________________ >gumstix-users mailing list >gum...@li... >https://lists.sourceforge.net/lists/listinfo/gumstix-users > > |
From: Dave H. <dhy...@gm...> - 2005-11-16 20:24:55
|
Hi Craig, > > The breakout-gs is also broken because the Vcc isn't 3.3v :( > > Is that still the case? I thought Gordon fixed that now. Could be. I have one of the original breakout-gs boards (Rev 277 I think) -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |