From: Chris E. <roo...@gm...> - 2006-11-07 22:53:52
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Curioser and curioser... I thought that before I tried what you said I would remove the tweener board and see if somehow that was causing part of the problem. My normal setup is robotstix -> tweener -> gumstix -> wifistix. I plug 5v into the tweener and everything works. When I remove the tweener now, nothing will boot. The blue led on the robostix doesn't even flash (although all the green leds are lit) and the wifistix never comes online. I have tried: 5v into the wifistix 5v into the robostix 4v into the wifistix and 5v into the robostix Removing the wifistix and connecting 5v into the robostix causes the robostix to immediately go into reset. If I remove the robostix, the wifistix does come online. Is it possible my robostix is all kinds of defective? On 11/7/06, Dave Hylands <dhy...@gm...> wrote: > > Hi Chris, > > > Next thing to try is to take the SCL pin on the UARTS connector (pin > > 16) and verify that there is no connection with ground (using a > > multimeter). If it's not shorted to ground then you can try connecting > > it to pin 14, which is +5. Press the space bar while the i2c-test > > program is running. DO you see any change? > > Just a note - don't leave things connected this way for very long > (i.e. try to do the test quickly). Watch the blue led for strange > behaviour. I'm concerned that if you happen to short out +5 and ground > something bad could happen. The regulator should just overheat and go > into shutdown if shorted (which is why it's important to do the > continuity test first). > > If you do happen to short Gnd and +5, the robostix would immediately > stop working (which is why watching the Blue LED is important - it > would go out). > > -- > Dave Hylands > Vancouver, BC, Canada > http://www.DaveHylands.com/ > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job > easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |