On 22-12-2013 21:19, Bas de Bruijn wrote: >> One of the problems with the TI ADC implementation is that it's slow >> to >> update. >> First you always seem to get an old (queued?) value. So throw away >> the first >> couple of readings after changing the input! >> >> Furthermore I suggest that you use J8 (the one close to the reset >> button) for the >> extruder reading as this channel seems to have the least >> crosstalk/disturbance >> caused by the touch-screen interface. > so, result after 5 times potmeter on J8, J7 and J6 jumpers: > linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` > 1196 > 3497 > 3003 > > switched the potmeter to J7, J8 and J6 jumpers: > linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` > 1159 > 0 > 979 > > now potmeter on J6, J7 and J8 jumpers > linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` > 1142 > 0 > 886
Ik kan kop noch staart ontdekken aan je resultaten, something's completely wrong! Your description also puzzles me: Potmeter on J6 is clear. But "J7 and J8 jumpers"? Do you mean you've short circuit jumpers on the J7 and J8 inputs? What's the value of the potmeter? It's another variable, I would use one (short circuit) jumper and try that on the three different locations? Makes it easier to draw conclusions (I hope). If the results from that test are okay, you can try the potmeter. If that doesn't resolve anything I suggest you return to Angstrom for further tests. You might have to update (flash) the BeagleBone if the software is old (and the bone-bebopr-brdg overlay is not included with the kernel). -- Bas > > > ------------------------------------------------------------------------------ > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application performance > affects their revenue. With AppDynamics, you get 100% visibility into your > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
