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by thebenchmark
Mon Apr 15, 2019 5:23 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 network issues after 2 months stable
Replies: 5
Views: 671

Re: DS18B20 network issues after 2 months stable

Thanks for the good answers! I removed the ring topology and spilt the network in 2 parts. This didn't seem to be the root cause and I was able to identify that a temperature sensor in a solarpanel had a cable that had melt a bit. I guess when temperatures rose it would short. So much for chinese te...
by thebenchmark
Tue Apr 09, 2019 9:36 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 network issues after 2 months stable
Replies: 5
Views: 671

DS18B20 network issues after 2 months stable

Hello everyone Firstly sorry for yet another 1 wire network troubleshoot topic. I've read a book worth of them but I'm under the impression that none of the information there helps my case. Situation: I'm building a solar water heater that can dump its excess water into my pool. Therefore I need 10 ...
by thebenchmark
Sun Mar 19, 2017 9:33 pm
Forum: Automation, sensing and robotics
Topic: Sensing 12v input using GPIO
Replies: 12
Views: 4479

Re: Sensing 12v input using GPIO

Okay thanks for the correction, so this should be it?
schema 12v sensing.PNG
schema 12v sensing.PNG (10.29 KiB) Viewed 4297 times
by thebenchmark
Sun Mar 19, 2017 5:39 pm
Forum: Automation, sensing and robotics
Topic: Sensing 12v input using GPIO
Replies: 12
Views: 4479

Re: Sensing 12v input using GPIO

Thanks for your reply :)

So this should be correct?
schama 12v sensing.PNG
schama 12v sensing.PNG (9.74 KiB) Viewed 4420 times
by thebenchmark
Sun Mar 19, 2017 3:47 am
Forum: Automation, sensing and robotics
Topic: Sensing 12v input using GPIO
Replies: 12
Views: 4479

Sensing 12v input using GPIO

Hello guys I'm doing quite a large project in which I'm planning to control a spa from the raspberry PI. I've got most of the things figured out but i'm stuck at the following problem. I've got 4 12vdc lines that I need to sense whether they are powered or not and read this into the pi by gpio. I've...

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