[neonixie-l] Re: Counterfeit RTC modules
Greg, you really ought to inform Maxim. They may want the part. Terry On Thursday, February 4, 2016 at 9:04:45 AM UTC-6, gregebert wrote: > Lesson learned: You get what you pay for. > > I bought a $2 US realtime clock module on Ebay, imported from China, and > the DS3231 chip appears to be counterfeit because it was not keeping > accurate time. I was suspicious about the price, considering I paid almost > $8 US just for the DS3231 from a reputable supplier. Over a few days, it > lost about 1 hour of time. > > After replacing the chip with a genuine Maxim DS3231, it's running > correctly. > > A quick web-search found there are several others who have experienced > this. > > Despite having to replace the RTC chip, the module itself is still worth > the price because it included a rechargeable Li-ion coin battery and a > serial EEPROM (no time yet to see if that's working correctly...) > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6a4e61ed-a823-42d8-828e-bddd5815b5a0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Counterfeit RTC modules
I don't understand why chinese bother to counterfeit LM2596s, but they do all the same. In fact 99% of the dc buck converters you find on amazon and ebay are counterfeits. -Dan On Thu, 4 Feb 2016, David Forbes wrote: Sorry, but I do not understand this race to the bottom, that produces products that look like products that work. Why not just buy a working chip for the price of a working chip, and save yourself the hassle and disillusionment that comes with a part whose price is clearly too low to be a working product? The odds of the rest of the module working properly are not too high. You might spend hours dealing with the fallout of saving ten dollars. On 2/4/16 8:04 AM, gregebert wrote: Lesson learned: You get what you pay for. I bought a $2 US realtime clock module on Ebay, imported from China, and the DS3231 chip appears to be counterfeit because it was not keeping accurate time. I was suspicious about the price, considering I paid almost $8 US just for the DS3231 from a reputable supplier. Over a few days, it lost about 1 hour of time. After replacing the chip with a genuine Maxim DS3231, it's running correctly. A quick web-search found there are several others who have experienced this. Despite having to replace the RTC chip, the module itself is still worth the price because it included a rechargeable Li-ion coin battery and a serial EEPROM (no time yet to see if that's working correctly...) -- David Forbes, Tucson AZ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/56B3F03C.6090903%40dakotacom.net. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Counterfeit RTC modules
Sorry, but I do not understand this race to the bottom, that produces products that look like products that work. Why not just buy a working chip for the price of a working chip, and save yourself the hassle and disillusionment that comes with a part whose price is clearly too low to be a working product? The odds of the rest of the module working properly are not too high. You might spend hours dealing with the fallout of saving ten dollars. On 2/4/16 8:04 AM, gregebert wrote: Lesson learned: You get what you pay for. I bought a $2 US realtime clock module on Ebay, imported from China, and the DS3231 chip appears to be counterfeit because it was not keeping accurate time. I was suspicious about the price, considering I paid almost $8 US just for the DS3231 from a reputable supplier. Over a few days, it lost about 1 hour of time. After replacing the chip with a genuine Maxim DS3231, it's running correctly. A quick web-search found there are several others who have experienced this. Despite having to replace the RTC chip, the module itself is still worth the price because it included a rechargeable Li-ion coin battery and a serial EEPROM (no time yet to see if that's working correctly...) -- David Forbes, Tucson AZ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/56B3F03C.6090903%40dakotacom.net. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Counterfeit RTC modules
Lesson learned: You get what you pay for. I bought a $2 US realtime clock module on Ebay, imported from China, and the DS3231 chip appears to be counterfeit because it was not keeping accurate time. I was suspicious about the price, considering I paid almost $8 US just for the DS3231 from a reputable supplier. Over a few days, it lost about 1 hour of time. After replacing the chip with a genuine Maxim DS3231, it's running correctly. A quick web-search found there are several others who have experienced this. Despite having to replace the RTC chip, the module itself is still worth the price because it included a rechargeable Li-ion coin battery and a serial EEPROM (no time yet to see if that's working correctly...) -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/80b61558-a3f8-4938-b16a-30c9bdadd04c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Counterfeit RTC modules
Another possibility is that these were scrapped/rejected units that escaped destruction at Maxim, and ended-up being sold, obviously illegally, and wound-up in products. It does seem odd to me that someone would go to the bother, not to mention the expense, of copying an inexpensive part and selling it. -- You wouldn't believe the hassles I had to go thru to get an 8-inch 'souvenir' wafer of a chip I worked-on that was never taken into production. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/71c0c466-530a-4c6b-8fbe-2eb634415cc2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
