Definitely sounds like the 1-Wire bus is getting shorted out.
> On Mar 1, 2016, at 3:56 PM, Peter Hollenbeck <pwhb...@gmail.com> wrote:
>
> I must have something else wrong. When I connect the DS18B20 without a
> resistor the MS-TV disappears.
>
> Odd that it worked last night - with a 5K resistor.
> I do not know electronics.
>
> Thanks,
> Peter
>
> On Tue, Mar 1, 2016 at 1:48 PM, Johan Ström <jo...@stromnet.se
> <mailto:jo...@stromnet.se>> wrote:
>
>
> On 01/03/16 22:38, Peter Hollenbeck wrote:
> > Raspberry Pi Ethernet to LinkUSB
> > Ethernet from LinkUSB to MS-TV
> > Ethernet from MS-TV to DS18B20
> >
> > Ethernet connections to DS18B20:
> > DS18B20 +5V red connected to RJ45 pin 2
> > DS18B20 ground blue to RJ45 pin 6
> > DS18B20 data yellow to RJ45 pin 4
> That looks weird, according to my LinkUSB PDF pin 6 is Auxiliary. Try
> pin 1,3 or 5 which is GND.
>
> There should be no need for a pull-up resistor on a LinkUSB, ever. It
> would probably just confuse the active pull-up which the LinkUSB is
> equipped with.
> The doc you referred to (https://www.adafruit.com/products/381
> <https://www.adafruit.com/products/381>) seems to
> assume a direct connection between a Rasberry Pi GPIO pin, and the
> device. That makes a non-optimal, but working, 1-wire master. You have a
> proper one (the LinkUSB).
>
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