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Javelin not responding — Parallax Forums

Javelin not responding

steve_bsteve_b Posts: 1,563
edited 2005-02-23 18:32 in General Discussion
Hi Guys,

well, I'm not sure what happened....but the weekend, I came in and went back to work setting up my Javelin with Friday's setup and no response!
I pass the loopback but no Echo or Status.
The regulator works fine (4.97Vdc out) but the only pin on the Javelin itself that has voltage is the Vin pin which is sitting at about 15Vdc (wall wart voltage; rated at 12V but not a big enough load).

I emailed support....but as I'm ancy at the moment I thought I'd drop a quick line on here to see what, if anything, people might suggest!



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·

Steve
http://members.rogers.com/steve.brady
"Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."

Comments

  • dandreaedandreae Posts: 1,375
    edited 2005-01-31 21:34
    Hello Steve,

    Are you able to test it on another computer?· Have you been able to program it before?· Is it getting really hot?

    Dave


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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com

    ·
  • steve_bsteve_b Posts: 1,563
    edited 2005-01-31 22:07
    I didn't try any other computers no.· But I can certainly program my bs2 with the same power supply and data cable.

    The only pin I could measure a voltage on was Vin....I thought this was supposed to be the output of the regulator (~5V).

    I popped the Javelin into my BOE and it failed.· I didn't want to try the BS2 in the other board as I didn't want to toast to stamps in one day!

    I was programming it all last week and certainly couldn't tell if anything was overly hot!

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    ·

    Steve
    http://members.rogers.com/steve.brady
    "Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
  • dandreaedandreae Posts: 1,375
    edited 2005-01-31 22:13
    Are you able to identify the Javelin Stamp in the IDE?

    Dave

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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com

    ·
  • steve_bsteve_b Posts: 1,563
    edited 2005-01-31 22:34
    The loopback comes up ok...but Echo and Status fail.· Keeps coming up saying timeout on serial check.

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    ·

    Steve
    http://members.rogers.com/steve.brady
    "Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
  • dandreaedandreae Posts: 1,375
    edited 2005-01-31 22:40
    Let us have you send that in so we can test it.· Please contact our sales department at 1-888-997-8267 and ask for an RMA #.· Make sure that you refer them to myself Dave Andreae.

    Thanks,

    Dave

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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com

    ·
  • steve_bsteve_b Posts: 1,563
    edited 2005-01-31 22:42
    Thanks Dave....just to note I sent an email in off the Tech support page...(just in case there's too many people investing time on this!).



    Thanks

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    ·

    Steve
    http://members.rogers.com/steve.brady
    "Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
  • dandreaedandreae Posts: 1,375
    edited 2005-01-31 22:44
    Steve,

    When did you send the message and to what addresss?

    Dave

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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com

    ·
  • steve_bsteve_b Posts: 1,563
    edited 2005-01-31 23:07
    I sent the email about....noon-ish EST.

    I sent it from my work account...so I'm not sure where it went.· But it was the button off of the Support page on the website.

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    ·

    Steve
    http://members.rogers.com/steve.brady
    "Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
  • dandreaedandreae Posts: 1,375
    edited 2005-01-31 23:09
    Check to see if it was support@parallax.com?

    Dave





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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com

    ·
  • steve_bsteve_b Posts: 1,563
    edited 2005-02-01 14:44
    Hi Dave,

    My original email was to the support@parallax.com email.

    I came in to work this morning and saw a reply from one of your techs.· He gave me some voltage test points to try.

    Here's my reply:
    me via email said...
    ....here are the measurements I got from your points. (not sure about the 2nd pin1....was that a typo?). In reference to ground (Vss), Javelin Pin 1 was 0V; Javelin pin 24 is the voltage from the wall wart (I always thought this was supposed to be 5Vdc....guess not); Javelin pin 22/21 are 0V.

    Is the Vin pin to the onboard regulator (onboard the Javelin)? If nothing is coming out the other pins then the Regulator is pooched!? Now, I don't measure anything on the Javelins pin21 (Vdd) but I do measure ~5V on the strip to the top of the breadboard (X3)! These are two different Vdd's? Looking at the schematic would say all the Vdd's are interconnected. A continuity check certainly looks that way, but C1 seems to push my reading offscale(charging the cap).

    With the stamp not connected, I measure +5V at the regulator output (3rd leg of LM2950) and +5V at X3-Vdd; but only 1.3V at X1-Vdd and pin21 on the Javelin socket. I realize these are unloaded readings....but I would have assumed a higher reading for an unloaded circuit (I know...assumptions are bad!).

    So, my question is....who supplies Vdd? If it comes from the regulator and powers the Stamp, then my issue could be the regulator OR the caps. But I did pop the Javelin in to my BOE and it failed there too! I didn't put my BS2 in to my Javelin board though....

    Anyhow....shall I send it back in?

    Thanks

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    ·

    Steve
    http://members.rogers.com/steve.brady
    "Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
  • dandreaedandreae Posts: 1,375
    edited 2005-02-01 17:28
    Please contact our sales department at 1-888-997-8267·and ask for an RMA#.· This will allow us to test it.

    Dave



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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com

    ·
  • DavLDavL Posts: 2
    edited 2005-02-19 17:22
    I'm having a similar problem, however my setup is different.

    I'm using 9volt battery, Board of Education(usb), Javelin Stamp

    I have been able to code the javelin stamp before
    The Javelin has not gotten hot either.


    But now when I check the identify, I am receiving····· Yes on Loopback, Echo·······and a·NO on Got Status


    I have tried two computers, and one laptop, I even bought new 9 volt batteries.

    The only code I programmed is a
    Hello world
    Range Finder
    Accellerometer

    Last thing that was done is my friend disconnected the usb from the laptop to connect a jumpdrive to back up the code, but when we connected the USB back on the laptop, thats when it started giving us a NO on Got Status

    Any idea what I might be forgetting??


    ·
  • steve_bsteve_b Posts: 1,563
    edited 2005-02-20 20:01
    did you use the updated drivers (from Parallax) on the 2nd PC.

    The echo/loopback is a function of the rs232 pump transistors on the stamp that electrically connect back to the rx line on your pc...so you get this echo effect.

    Does the USB cable power the USB BOE?!...LMNOP! [noparse];)[/noparse]

    do you only have the one javelin?· I'd say try another stampin the socket.· I know the javelin stamp works in the bs2 BOE type board...but I don't know that the bs2 stamp will work in the javelin demo board.

    Break out the schematic and measure voltages on the javelin pins.....

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    ·

    Steve
    http://members.rogers.com/steve.brady
    "Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
  • DavLDavL Posts: 2
    edited 2005-02-23 11:31
    My friend and I·installed the Javelin Stamp on the BOE(usb) and powered it using the 9 volt battery.

    The first computer used is the Laptop, from the beginning, we got a·YES on Loopback, echo, and got status...

    First program we·ran was a simple hello world, it worked, and oh yea!!!!!!!!!!!! we were on a role

    Second program was the range finder, it worked,·and hells yea!!!!!!!!!!!!!!! too easy

    Third program was the accelerometer, it worked,·and yeup thats right who's da man!!!!!!!!!!!

    My friend disconnected the usb cable from his laptop so he can attach·a·jumpdrive to save the code, after saving,·he reconnected the usb cable to only find that this time Loopback, and echo is showing a YES, and got status is a big fat NO..··and duuuuuuuude!!!!!!!!!! not kewl.·

    The second computer, I cant say which version of driver it had but on my computer at home I have the latest and I still got the same Yes(Loopback,·Echo)·and NO(gotstatus)

    We reinstalled the BS2 on the same BOE(usb) and yes it powers and reads ok.· We will be programming the BS2 untill we hear further about the Javelin issue.

    Post Edited (DavL) : 2/23/2005 11:34:52 AM GMT
  • allanlane5allanlane5 Posts: 3,815
    edited 2005-02-23 18:32
    Hmm, you hot-plugged the USB with the Javelin attached. This should not cause any problems. I know the javelin is much more 'chatty' on the serial line than the BS2 is -- again, I would not think this could cause the problem you see.

    The PC is supposed to re-load the FTDI USB Driver when it detects you've connected a 'new' device to the USB port. This should reset the FTDI USB hardware that talks to your Javelin, no problem. When you try to re-program the Javelin, it should reset the javelin, so any Javelin confusion would be corrected at that point.

    Your PC's Serial driver could conceivably be confused by your pulling the USB cable, depending on what was going on. Did you shutdown the IDE? Or at least close any debug sessions?

    This shouldn't happen, so I'm grasping at straws here...

    OH, and the way Vin and Vdd work:· Vin is the INPUT to the on-chip regulator.· It can be 5.5 to 16 volts DC.· Vdd is the +5 volt pin.· If you supply Vin, Vdd can OUTPUT current (though not much current).· If you DON'T supply Vin, you CAN supply Vdd with +5 to drive the chip.

    Don't mix these up.· If you supply Vdd with more than 5.5 volts, you'll destroy the BS2 or Javelin.

    Now, on the BOE, these issues should already be taken care of, as it has an on-board regulator (2940-5) which supplies the +5 volts to Vdd.

    *** Rereading your post, I see your friend attached a 'jump-drive' to the USB port, and saved to it.· Did he first save to a 'local' drive from the IDE, shut down the IDE, then copy to the jump-drive?· Or did he just pull the USB cable, plug in the Jump-Drive, and save from the IDE?

    If the second, I don't know where the IDE is now looking for its files.· It could be looking at the (now non-connected) jump-drive.· That could be part of your problem.· I would ALWAYS save the files to a local drive, then COPY them to the jump drive, AFTER exiting the IDE.


    Post Edited (allanlane5) : 2/23/2005 6:42:02 PM GMT
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