On Sat, 20 Apr 2019 12:37:08 +0100, Adrian Caspersz
wrote:

On 20/04/2019 12:25, David wrote:
I would like to be able to measure the ambient temperature without
carrying a bulky device.

Why? What would you want real time data on a phone as it was being
carried?


You cannot measure ambient temperature with a phone mounted device, or
indeed any transportable device unless you mount it on top of your
head, over a very well insulated "hat".

Temperature data loggers are very cheap, I bought quite a few that do
temperature and humidity from Ebay, they have better than the claimed
accuracy on temperatue and for a pound or two extra, a version with a
pt 100 and a metre of cable is available. The thing has an inbuilt
sensor and the pt 100 takes over when plugged in.

Temp/ humidity data and alarm functions set and downloaded to a PC,
historical data is retrievable using a couple of buttons and an LCD
screen. You would get around four in a shirt pocket, although unless
you really need to know your nipple temperature a hard hat with an
extedable radio aerial would be a useful mount for ambient
temperature. It would have the added advantage of informing the
general public what class of individual is likely to be lurking
underneath.

The baby monitor will only work from July to September at the moment.
There is a strong likelyhood that the useable time period will expand
considerably though.

AB