Anyone got any guidance on how to log temp data from a DS18B20 using a Logomatic (v2)?
I found this:
http://www.siwawi.arubi.uni-kl.de/avr_p … /#lpc_temp
but really don’t know if it’s possible to get it to work with the logomatic.
maybe try
pretty busy forum.
After all that trouble with my analogue sensors I am thinking about the same…
yes you can - i did it and it works pretty well - i used the analog inputs re-configured to digital and modified some sample programs to bit bang the to the ds18B20 - though i used the exclusively parasitic power model and set the output high rather than using an external pull-up
stefans:
yes you can - i did it and it works pretty well - i used the analog inputs re-configured to digital and modified some sample programs to bit bang the to the ds18B20 - though i used the exclusively parasitic power model and set the output high rather than using an external pull-up
Hello - Would you mind sharing your code?
Thx
yes, would be nice to know, the firmware.
Plus, how to modify it so it logs every minute or so, want to log room temperatures foe a few days, so I don’t want to have millions of readings…
If you just need to do temperature logging, you might consider an [iButton DS1921G temp logger instead of the Logomatic with a temp sensor. You’d need [the whole $60 kit to get started, but you’d be done.
Of course, I would much prefer that you get the DS18B20 to work with the logomatic and then post your code. ;-)](SK-TC1-R - Thermochron Starter Kit, DS1921K equivalent)](Mixed-signal and digital signal processing ICs | Analog Devices)
perhaps a reading in 30 minutes is more than enough unless you are trying to control the temperature with this device. In such cases, a log may not be needed.Steffen595:
yes, would be nice to know, the firmware.Plus, how to modify it so it logs every minute or so, want to log room temperatures foe a few days, so I don’t want to have millions of readings…
10 to 15 minutes would be ok, its merely a few sensors all over the place in my application. Want to see how room, roof and subfloor temps are doing during a day.
By now I get 1 reading per minute in ADC mode, make it slower is to tricky for my humble knowledge.
Have 6 sensors, that would mean 6 iButtons. Plus I would crawl around the house every so often to collect the buttons and read them, better have it wired up and go to a central point and hook up the USB cable every now and then.