Re: [Owfs-developers] SOLVED: Crazy temperature readings

On 11/06/2013 04:01 PM, Roberto Spadim wrote: > maybe you have wrong impedance on the wire and the sensor is ok, try to > equalize the impedance of this sensor wire Don't think that is the issue. I have two of these DS1825s on the same bus literally 2 feet apart and the other sensor is working g

[Owfs-developers] SOLVED: Crazy temperature readings

On 11/05/2013 03:16 PM, Jeff Siddall wrote: > On 11/05/2013 01:45 PM, Roberto Spadim wrote: >> check the checksum statistics and check if you have short circuits bad >> checksums and others problems > > Everything is zero in the BUS and CRC statistics except for: &

Re: [Owfs-developers] Crazy temperature readings

On 11/05/2013 01:45 PM, Roberto Spadim wrote: > check the checksum statistics and check if you have short circuits bad > checksums and others problems Everything is zero in the BUS and CRC statistics except for: /statistics/errors/BUS_readin_data_errors: 65 /statistics/errors/CRC8_errors: 16 /sta

[Owfs-developers] Crazy temperature readings

Somewhat related to the "diagnosing disappearing devices" thread, I have also noted that sometimes my temperature readings go crazy. Example from a temperature log: 2013-11-05 04:31:10 ,Basement Fridge Thermometer, 7.125 2013-11-05 04:32:10 ,Basement Fridge Thermometer, 7.0625 2013-1

Re: [Owfs-developers] Diagnosing disappearing devices

On 11/02/2013 10:10 AM, Guy COLIN wrote: > Hi Colin, > > sounds like hardware problem. > Does the USB us master disapear also? i.e. no more 81.xx in the devices > listing. Or only the temp sensors disapear? I have been having this same issue intermittently. Mine sometimes come back on its ow

Re: [Owfs-developers] Does the MAX31820PAR work with owfs?

On 10/17/2013 11:03 AM, Roberto Spadim wrote: > reading datasheet yes, check: > > * Software Compatible with the DS1822-PAR and DS18B20-PAR Aha, thanks for that, and sorry for the double post. Jeff -- October Webinars

[Owfs-developers] Does the MAX31820PAR work with owfs?

I just ordered a couple, wondering if anyone has experience with them. I previously tried the MAX31826 and that was flaky but that could have been an electrical problem and nothing to do with owfs. Thanks, Jeff -- Octo

[Owfs-developers] Does the MAX31820PAR work with owfs?

I have a couple on order, wondering if anyone has any experience with these. Thanks, Jeff -- October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MP

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/14/2012 09:32 PM, Paul Alfille wrote: > Are you using the MAX31826 in parasitic mode? Vdd has to grounded in > that case according to the datasheet. Perhaps that's the problem? > > On Sat, Jul 14, 2012 at 9:29 PM, Paul Alfille > wrote: > > Tell me about the

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/14/2012 09:57 AM, Paul Alfille wrote: > The support for the MAX31826 is complete, except I've run into a snag: > > The MAX31826 has 12-bit resolution and 128byte of memory > The DS1825 has 9-12 bit resolution and temperature alarm limits and no > memory > > Both have family code 3B and both h

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/14/2012 05:06 PM, Paul Alfille wrote: > Writing to the configuration register (or scratchpad 1 in general) is > not supported -- at least in the datasheet. Really? The DS1825 datasheet says: "Byte 4 of the scratchpad memory is the configuration register, as shown in Figure 8. The configur

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/14/2012 06:06 PM, Paul Alfille wrote: > Actually, looking closely at the datasheets, it looks like bit 7 of the > configuration register is "1" in the MAX31826 and "0" in the DS1825. Interesting. In the datasheet I grabbed bit 7 simply shows "-". The DS1825 shows it as "0" though and also

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/14/2012 09:57 AM, Paul Alfille wrote: > The support for the MAX31826 is complete, except I've run into a snag: Thanks for the fast work on this! > The MAX31826 has 12-bit resolution and 128byte of memory > The DS1825 has 9-12 bit resolution and temperature alarm limits and no > memory > > B

[Owfs-developers] Best wiring method when not using UTP

I realize this is more of a hardware rather than owfs question but it is directly related to owfs functionality so here goes: I have a bunch of existing 4-wire untwisted telephone station cable I want to use for 1-wire. It is all home run (star) wired currently which is not ideal for a 1-wire

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/11/2012 04:00 PM, Gregg Levine wrote: > Hello! > Give it time Jeff. Most of the work of adding new sensors is the work > of the founder behind the project. The rest will be undertaken by all > of us. I forgot to mention, I am really only interested in the temperature capabilities of the MAX

Re: [Owfs-developers] Any plans to support the MAX31826?

On 07/11/2012 04:00 PM, Gregg Levine wrote: > Hello! > Give it time Jeff. Most of the work of adding new sensors is the work > of the founder behind the project. The rest will be undertaken by all > of us. Got it, thanks. I'll stick that chip back on the shelf for now. > How did you apply it? Th

[Owfs-developers] Any plans to support the MAX31826?

I bought one of these to test since they are the cheapest 1-wire temperature sensor available. Unfortunately nothing shows up in owfs when it is connected to the bus so I guess they are not supported in owfs-fs-2.7p28-1 I am running. Any plans to add support for this? http://www.maxim-ic.com/