) discussion and help
Subject: Re: [Owfs-developers] Hobby Boards Humidity Sensor Question
On Sat, Mar 10, 2012 at 6:04 PM, Pedro Côrte-Real wrote:
> 2012/2/28 Eric Vickery :
> I guess I'll have to add some temp sensors to the daisy chain port of
> each of these, or should I worry about
On Sat, Mar 10, 2012 at 6:04 PM, Pedro Côrte-Real wrote:
> 2012/2/28 Eric Vickery :
> I guess I'll have to add some temp sensors to the daisy chain port of
> each of these, or should I worry about those getting hot from the
> board as well?
I just tried this and it seems the 18S20 on the board ag
2012/2/28 Eric Vickery :
> It is the voltage regulator heating up the board, it usually stays at a
> consistent amount so you can
> subtract the "offset" and get the correct temperature. Also the DS2438 has
> self heating issues so I
> would not use the temperature from the DS2438.
>We offer the
Thanks Eric
On 28/02/12 00:11, Eric Vickery wrote:
> It is the voltage regulator heating up the board, it usually stays at
> a consistent amount so you can subtract the "offset" and get the
> correct temperature. Also the DS2438 has self heating issues so I
> would not use the temperature from
It is the voltage regulator heating up the board, it usually stays at a
consistent amount so you can
subtract the "offset" and get the correct temperature. Also the DS2438 has self
heating issues so I
would not use the temperature from the DS2438. We offer the combined board but
we recommend u
Yes good points, desk lamp is not an issue but I guess it could be a
voltage reg issue. I have also just discovered that my wiring does not
supply +5 to the sensors, which I thought it did. Need to review that
and test again, but that's a job for tomorrow, it's getting late now!
Mick
On 27/0
Dnia 27.02.2012 o 23:58 Mick Sulley Mick Sulley
napisał(a):
> The 4 DS18S20's read 18.3125, 18.625, 18.675 and 18.125, so all within
> half a degree.
I was wondering if this error is persistent? If I put all my sensors in one
place take readings and calculate each sensor's deviation from aver
I have a test setup with 4 DS18S20 temperature sensors and a Hobby
Boards Humidity sensor with built in temperature sensor. They are all
currently on the desk within a couple of inches of one another so should
all read the same temperature.
Two questions
The 4 DS18S20's read 18.3125, 18.625,
