As suggested in an earlier thread, i changed my setup from a tree, to a bus. To make it myself easier, i bought a 9bus board from pridopia (1 DS2482-100 and a DS2482-800) I am not using the DS2482-100, but the first 5 channels from the DS2482-800. All the sensors are connectes as a bus Everything works fine, but when i connect my longest temperature sensor (ds18b20) as the only sensor on a channel i get "spikes" in the reading from the longer wires (on other channels). When i connect it as the last one on another bus, that whole bus disappears. (this sensor uses only 4/5 as go and not the additional 3*6 as return, so it has to be last)
The UTP is approximately 45m long, cat 5e. I am using wire nr 1/2 for gnd/+5V and 4/5 for 1wire/gnd (hobbyboard pinout). The sensor worked without problems on the tree setup (with a diy usb master), nothing else has changed. The other pairs of the UTP are in use for a distance sensor HC-SR04(measuring water level with an arduino) When checking the wires i noticed that the resistance between 5V and 1wire gnd for this cable was differt to the others: here its approx. 285kOhm. anyone an idea how to solve this? ------------------------------------------------------------------------------ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
