Mwall If I were to get a cheap one wire sensor could I solder it into an old accurite transmitter?
Thanks On Fri, Apr 6, 2018, 10:04 AM mwall <[email protected]> wrote: > > > On Friday, April 6, 2018 at 9:38:09 AM UTC-4, shane turner wrote: >> >> Hello all >> >> I have an accurite that is currently set up on a dock sending data to >> greyscale receiver in the house.It then goes into pi via weewx and then to >> the web. >> >> I would like to add saltwater temp. Could I hack up an old accurite >> system that had been broken in storm as I would only need temp, no wind >> ect..? .. Then solder in a sensor and drop it off my dock and have it send >> data to a second accurite receiver. At this point would I need a second >> piece or can I run 2 usbs on 1 pi with weewx then out to wunderground ect? >> > > if you put two usb acurite consoles on a pi, you will not be able to tell > the difference between them. there is no serial number in the acurite usb > info, so no chance of writing a udev rule. you would have to probe each > console for data, then distinguish based on the actual temperature/wind > values. > > you might be better off buying a acurite bridge (aka smarthub). they are > discontinued now but should be available for about $40. an acurite access > could work too, but that would be a waste of money imho ($120). the bridge > reports the sensor's serial number, so you could use a single bridge to get > data from two or more 5-in-1 or tower sensors. > > or you could just get an SDR dongle ($20) and grab the data directly from > the sensor cluster. > > > >> Additionally what is a good sensor that won't attract barnacles? >> > > pretty much anything you put in saltwater will end up with stuff growing > on it. freshwater too, but different critters :) > > we use one-wire temperature sensors for this - they cost about $1 each, > potted in a stainless can. search for DS18B20 on amazone or ebay. then > you will need a 1-wire interface such as a usb-to-1-wire adapter. to > collect data, use the weewx-onewire extension as a service or as a driver. > > that is how we measure water temperature here: > > http://sailing.mit.edu/weather/ > > no barnacles, but it is briney with lots of slime and algae. you can > paint the sensor with a hard or ablative bottom paint. that should not > affect the temperature readings much. > > m > > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
