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Also, why DS18B20? There are cheaper ...
Quote from: blueskull on March 12, 2018, 02:08:47 amAlso, why DS18B20? There are cheaper ...I didn't buy the TOS part, it's a wired probe in a stainless steel housing. I need it waterproof (actually yogurt proof). So there are a bit less options for me, and at $6.50 or so it doesn't matter too much. I also buy parts commercially from Digikey so I have never issues with minimum orders.In the meantime I found this blog with a test procedure, will try it later today:https://blog.peku33.net/aliexpress-ebay-china-market-fake-ds18b20-sensors/
Also, why DS18B20? There are cheaper MAX31820 and MAX31820PAR out there which are virtually identical to DS18B20 and DS18B20PAR.
Last night I did the multimeter diode test and compare the DS18B20 probe with some TOS DS18B20 that I got a few weeks ago from Digikey. In that test the probe behaves the same as the lose Digikey parts. So the probe might be using an authentic DS18B20.