Hi, Ferrite beads aid with removing VHF-SHF feedback and/or uncontrolled oscillation mainly. I cannot see why they would be of use on a (500khz?) I2C bus. At that frequency they would have minimal effect.
On Thu, Nov 24, 2011 at 9:44 PM, Benjamin Deering <ben_deer...@swissmail.org > wrote: > > With the i2c devices removed, I get TTFF of around 1 minute in shr-core. > It sounds like putting ferrite beads on SDA and SCL might help reduce EMI, > so I will try that when I get a chance. > > Ben > > > On 11/23/2011 05:06 PM, dmatthews.org wrote: > >> On Tue, 22 Nov 2011 21:20:16 -0500 >> Benjamin Deering<ben_deering@swissmail.**org <ben_deer...@swissmail.org>> >> wrote: >> >> Hi Ben >> >> Not sure this is relevent to you, but I now have the fastest GPS fix I've >> ever had on the freerunner. >> >> QTMoko v35 and I put this in /etc/default/gpsd:- >> >> START_DAEMON="true" >> GPSD_OPTIONS="" >> DEVICES="/dev/ttySAC1" >> USBAUTO="false" >> GPSD_SOCKET="/var/run/gpsd.**sock" >> >> Before doing this it was pretty poor - worse than earlier versions of >> qtmoko and much worse than every SHR I've tried. On a reasonably clear day >> I now reliably get a fix in under a minute, sometimes within a few seconds. >> >> The only other varying factor (doubtful relevence) is that I got pissed >> with QTMoko and to a lesser extent SHR foobarring the SD card, so I'm now >> running from the card instead of NAND and everything is pretty good >> > > > ______________________________**_________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/**mailman/listinfo/community<http://lists.openmoko.org/mailman/listinfo/community> >
_______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community