Author Topic: Temperature sensor not recognized  (Read 688 times)

w5rhr

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Temperature sensor not recognized
« on: 2018-03-28, 18:42:11 »
I purchased two DS18B20 temp probes

https://www.ebay.com/itm/2pcs-DS18B20-Stainless-Steel-Waterproof-Digital-Thermal-Probe-Sensor-100cm/121952945265?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

and have tried to integrate them with my 1216H on BUSS B, since I have the rotor controller 1216L on buss A.
The probes are wired in the passive mode, VCC+ and - tied together to one connection of the 1216H and the data wire to the other.

Performing a scan results in the error message no Buss B 1 wire devices found

w5rhr

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Re: Temperature sensor not recognized
« Reply #1 on: 2018-03-29, 01:41:48 »
SO are the correct terminals those next to the Buss A connections?
I see terminals marked
Buss B
In -1
0 volts
In -2

sm2o

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Re: Temperature sensor not recognized
« Reply #2 on: 2018-03-29, 08:44:37 »
Hi

temp sensors should be connected between BUS-A and 0V or BUS-B and 0 V

But we have seen that those Chinese sensors do not have a genuine Dallas sensor and the WS will not recognize some of them.

73 de mike

w5rhr

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Re: Temperature sensor not recognized
« Reply #3 on: 2018-03-29, 22:52:12 »
that is where I tried hooking them up, so must be the import problem.
I see the webstore has them, so I will order from there.

Thank you