On Fri, 17 May 2019 at 09:16, nihar Modi <niharmodi...@gmail.com> wrote: > > Hey, thanks for the reply. But meanwhile I got in new trouble. Owdir command > sometime shows all the sensors but as I add a new one it randomly shows two > or three sensors only. I am trying continuously for two days and same problem > persists. I am using 7-8 ds18b20 with ds2482-800 and powering it through R pi > 3b 3.3 volts. I am using external 4.7K pull up.
What are you pulling up to, and why? Colin Please tell a solution. Thanks in advance. > > On Thu 16 May, 2019, 17:36 Jan Kandziora, <j...@gmx.de> wrote: >> >> Am 16.05.19 um 11:33 schrieb modi: >> > Hi >> > I am using owfs for first time. I have to take temperature from 10 dsb1820 >> > through ds2482-800 via r pi 3. I have followed instructions from >> > http://www.sheepwalkelectronics.co.uk/RPI2_software.php . >> > >> > It is giving correct values until I connect 5 sensors on one bus. As soon >> > as >> > I connect 6th one it gives 85 as output. I have tried 3 on one bus and 3 on >> > other but same 85 output. I have tried 1.5K instead of 4.7K, no difference. >> > I can only use 3.3 volts for ds2482-800 as it is a part of larger system. >> > >> 85°C is the power-on value. If you get a steady 85°C readout, it means >> your sensors power-cycle during the conversion. >> >> You don't have to put pullups to the DS2482-800's 1W pins, it does so >> internally. It also uses its strong pullup feature automatically. >> >> Check your power supply. >> >> Kind regards >> >> Jan >> >> >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers > > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
