I must have it wired wrong.
Really odd that yesterday evening it worked and I got valid ocean
temperature values.
Back to checking wiring.
Thanks,
Peter
On Tue, Mar 1, 2016 at 1:59 PM, Eric Vickery <eric...@hobby-boards.com>
wrote:
> 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> 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) 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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