Great.
I'll order a couple of DS2483 devices.
Thanks,
Peter
On Mon, Jun 13, 2016 at 9:58 AM, Peter Hollenbeck <pwhb...@gmail.com> wrote:
> Thanks for the very useful answers. I will order the Sheepwalk board but
> in the meantime will try the "cheap&dirty solution". To do so I need help.
> Let me put it in perspective. I'm a 79 year old former mainframe computer
> programmer but know next to zero electronics.
>
> " ... connecting it (and a 1k pullup to 3.3V) to GPIO4 is sufficient."
>
> The waterproof DS18B20 has three leads:
> +5V (red)
> Ground (yellow)
> Data (blue)
>
> Do I wire:
> GPIO pin 1 (3.3V) to red
> GPIO pin 6 (Gnd) to yellow
> GPIO pin 7 (GPIO4) to blue
> ??
>
> Thanks. You will be rewarded for helping an old geezer.
> Peter
> Stuart Island, B.C.
>
>
> On Mon, Jun 13, 2016 at 2:43 AM, Jan Kandziora <j...@gmx.de> wrote:
>
>> Am 13.06.2016 um 04:11 schrieb Peter Hollenbeck:
>> > This article:
>> > https://www.packtpub.com/books/content/raspberry-pi-and-1-wire
>> > suggests using a 1-Wire DS2482-100 bridge from AB Electronics to
>> connect to
>> > a DS18B20.
>> >
>> This board is an overly complex design. The DS2483 onewire host chip
>> will work on a 3.3V I²C bus and gives you a 5V onewire at the same time.
>> External circuit: two resistors.
>>
>> If you only want to connect a single DS18B20, the cheap&dirty solution
>> of connecting it (and a 1k pullup to 3.3V) to GPIO4 is sufficient.
>>
>> Kind regards
>>
>> Jan
>>
>>
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