How about putting the pictures of the TB on a site with overlays saying what it is, so we know to stay away from the seller with many names
On Sun, Jun 26, 2016 at 5:38 PM, skipp Isaham via time-nuts <[email protected]> wrote: > >> From: Mark Sims <[email protected]> >> Subject: [time-nuts] Trimble / Symmetricom UCCM mini-GPSDO boards > >> For those of you that have one of these... good-ish news. I have Lady >> Heather working with >> them (well, at least the Trimble works, the Symmetricoms have not arrived >> yet and there are >> a couple of known differences in their commands). I'll get the code out >> there when I have a >> chance to test it with the Symmetricoms. They seem to fairly nice little >> units. Not as tweakable >> / versatile as a Z3801A, etc but quite usable. > > A Trimble Thunderbolt with Lady Heather initiated my interest in small > micro-controller GPSDO status > display boards, such as the one sold by (Chris ZL1CVD) on Ebay. I purchased > and built the status board > and am very happy with the results. However, as a course project, a friend > and I rewrote a lot of the code to > include power savings (interrupts) and a few other extras. > > "ZL1CVD TSIP GPSDO Thunderbolt Nortel Display (PCB Only)" > Ebay Item number: 111864779325 > > Chris's web site for his TSIP board > > https://sites.google.com/site/zl1cvd/tsip > > Anyway, just an offer to freely share the firmware we developed to hopefully > enhance Chris's board. > >> For those that are thinking about buying one, be aware that there are some >> pretty skeezy / clueless >> / dishonest sellers out there. People have received units with various >> parts that have been physically >> damaged or ripped off the boards. Apparently one or more of the Chinese >> scrappers was less than >> gentle removing them from whatever it was that they came out of. EEVBLOG >> has a long thread that >> mentions the Chinese Standard GPSDO Damage Infliction. A couple of devices >> (an inductor, a >> couple of caps, and some connectors) seem to be the most prone to be >> damaged... most damage >> was easily repaired. My Trimble came from a seller with a high reported >> coefficient of skeezyness, >> but was in perfect condition. Oh, and they run on 6V 2A startup, .8A >> warmed up. > > I purchased a received dead Thunderbolt from a China based seller, who > stalled answer replies over weeks > and then expired the regular Ebay return policy... Eventually with no return > shipping verification signature > process at their receiving end of the trip, said returned Thunderbolt was of > course never credited being "lost > in transit". > > I then received the return credit only because I paid that purchase with my > credit card through Paypal. > Of course, in three weeks the same seller using a different Ebay name put the > exact same returned > defective Thunderbolt back up for auction... I had clearly identifiable > pictures of the defective unit I received... > I reported it to Ebay (wasn't easy) and eventually the auction was taken > down. The seller however, remains > active with current auctions... > > Credit where it's due... > A number of friends and myself have purchased Thunderbolts from the > Australian Ebay Seller > electro_wrench and every one has been received fast and worked very well. > > Back to the ZL1CVD GPSDO status PC board kits/parts... > > If you have/use one of Chris's GPSDO display status boards or even something > similar you developed, you > are welcome to try our revised firmware/code (Free of course). Nothing > rocket science special but there are > some novel approaches taken to achieve notable power savings. Developed using > WinAVR and AVR Dude > (both software packages are available on the web... and free). > > > cheers, > > skipp > skipp025 at yahoo dot com > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
