@Vaclav-VESELY Probably my phone charger was giving out less than 5V and that affected my O2+ or the DS18B20. Now I'm using a Meanwell RS-15-5 adjustable power supply (http://www.meanwell.com/webapp/product/search.aspx?prod=RS-15)
B
Posts made by Bertalan Gergaly
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RE: 1-Wire Temperature Sensor - DS18B20 - on Omega2posted in Omega Talk
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RE: 1-Wire Temperature Sensor - DS18B20 - on Omega2posted in Omega Talk
OK, I got it working. I had to change the power supply from a phone charger to a 'real' power supply.
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RE: 1-Wire Temperature Sensor - DS18B20 - on Omega2posted in Omega Talk
My first thought was exactly that. So I redid the wires before posting. Same result.
I did a check just now. The data pin is not connected to the omega, just the ground and the power and I still got the weird devices:
root@omega:/sys/devices/w1_bus_master1# ls -1d ??-* 00-400000000000 00-c00000000000And I just did a retest without anything connected to the omega and I still got the weird devices:
root@omega:/sys/devices/w1_bus_master1# ls -1d ??-* 00-400000000000 00-800000000000 -
RE: 1-Wire Temperature Sensor - DS18B20 - on Omega2posted in Omega Talk
It is still not working for me. I just upgraded to the b151 firmware. I got the directory
/sys/devices/w1_bus_master1, but I got slave entries like:root@omega:/sys/devices/w1_bus_master1# ls -1d ??-* 00-100000000000 00-900000000000 00-e00000000000And it keeps changing. But I never see the correct serial number of the device.