Hello, I'm a very satisfied user of owfs for temperature measurements. Yet, I would need now to read voltages and DC currents (1-15A range). For the later I got a DS2438 and a Devicecraft hall-effect sensor. The resulting ~1A@12V sensitivity would be satisfactory for me.
So, I have attached the DS2438, and the hall sensor to it. I have checked and the sensor delivers the expected 0.01V offset when 0.5A flows. I have got also the folder for the 26.x device shown in my Ubuntu 10.04 machine when owfs is executed. Now I'm totally lost as a noob. I expected this would be simple like for the temp sensors, just to read files via "cat". But this seems to be more tricky, and after a lot of searching I still did not find any step-by-step guide how to get VAD measurements. I would appreciate any information directing me to the desired result. I'm very excited if this will work out. Many thanks, lapa PS: Just for the sake of record: for measuring 12V DC currents I used a dismantled car fuse, and a DS18S20 pushed onto the "hot wire" part so far. In a rather permanent temperature environment this showed an around 0.5A resolution. Of course the offsets have a delay and a heat up-cool & down curve, but the integral fits and the offsets can be calibrated if necessary. Now I would try the real thing. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
