owfs-developers — Developer's list for OWFS

Re: [Owfs-developers] experiences with raspberry pi

[Michael H. <ow...@th...>]

On Mon, 15 Sep 2025 10:04:39 +0200
Nico Bouthoorn via Owfs-developers
<owf...@li...> wrote:

> Chatgpt saved my day,   it seems that the usb disk was interfering
> the i2c signals on the bus by air...,     yes i use pull up's of the
> i2c bus with 2K2.  The bus has short wires of about 10cm to a
> external pcb with the ds2482 devices.
> 
> When i placed the usb disk outside the metal casing the problem was 
> gone..  The usb disk has plastic casing at one side.
> 
> Maybe usefull for someone also?

That is good info to know.  I'm getting ready to start a project with a
Pie and I will keep this info in mind.  Thanks for sharing!

-- 
Michael 

Re: [Owfs-developers] experiences with raspberry pi

[Nico B. <ni...@cu...>]

Chatgpt saved my day,   it seems that the usb disk was interfering the  
i2c signals on the bus by air...,     yes i use pull up's of the i2c bus 
with 2K2.  The bus has short wires of about 10cm to a external pcb with  
the ds2482 devices.

When i placed the usb disk outside the metal casing the problem was 
gone..  The usb disk has plastic casing at one side.

Maybe usefull for someone also?


On 9/12/25 8:28 AM, Nico Bouthoorn via Owfs-developers wrote:
>
> Hi all,
>
> I’ve just lost a couple of days troubleshooting this…
>
> I’ve been using a BeagleBone Black with a DS2482-800 for years without 
> any issues to control my greenhouse. Recently, I decided to upgrade 
> and switched to three DS2482-800s on a Raspberry Pi. At first, 
> everything seemed fine—the devices and sensors were detected. However, 
> from time to time, the DS2482-800 and the connected devices would 
> disappear.
>
> After some digging, I found the cause: I had also connected a SATA/USB 
> disk to the Raspberry Pi for storage. Somehow, the disk interferes 
> with the I²C interface. When running |i2cdetect -y -r 1|, the I²C 
> addresses occasionally disappear.
>
> Has anyone experienced something similar? It doesn’t seem to be a 
> 1-Wire issue, but rather a Raspberry Pi flaw.
>
> Thanks,
> Nico
>
> -- 
> 0623391101
>
>
> _______________________________________________
> Owfs-developers mailing list
> Owf...@li...
> https://lists.sourceforge.net/lists/listinfo/owfs-developers

-- 
0623391101

Re: [Owfs-developers] experiences with raspberry pi

[Mick S. <mi...@su...>]

Hi Nico,

I have been running a 1-wire system on a Raspberry Pi with a Sheepwalk 
Electronics RPI3 adapter for many years.  I believe the adapter uses the 
DS2482-800.

The 1-wire network lock up occasionally and needs the +5v supply to the 
adapter to be turned off and back on again.  I understood from feedback 
on this forum that it was an unavoidable 'feature' of 1-wire.  I then 
installed a second Pi which monitors the first and operates a relay to 
cut the +5v for a few seconds.  It is random but I guess every month or 
so on average.

I don't know if that helps at all....

Cheers

Mick

On 12/09/2025 07:28, Nico Bouthoorn via Owfs-developers wrote:
>
> Hi all,
>
> I’ve just lost a couple of days troubleshooting this…
>
> I’ve been using a BeagleBone Black with a DS2482-800 for years without 
> any issues to control my greenhouse. Recently, I decided to upgrade 
> and switched to three DS2482-800s on a Raspberry Pi. At first, 
> everything seemed fine—the devices and sensors were detected. However, 
> from time to time, the DS2482-800 and the connected devices would 
> disappear.
>
> After some digging, I found the cause: I had also connected a SATA/USB 
> disk to the Raspberry Pi for storage. Somehow, the disk interferes 
> with the I²C interface. When running |i2cdetect -y -r 1|, the I²C 
> addresses occasionally disappear.
>
> Has anyone experienced something similar? It doesn’t seem to be a 
> 1-Wire issue, but rather a Raspberry Pi flaw.
>
> Thanks,
> Nico
>
> -- 
> 0623391101
>
>
> _______________________________________________
> Owfs-developers mailing list
> Owf...@li...
> https://lists.sourceforge.net/lists/listinfo/owfs-developers

[Owfs-developers] experiences with raspberry pi

[Nico B. <ni...@cu...>]

Hi all,

I’ve just lost a couple of days troubleshooting this…

I’ve been using a BeagleBone Black with a DS2482-800 for years without 
any issues to control my greenhouse. Recently, I decided to upgrade and 
switched to three DS2482-800s on a Raspberry Pi. At first, everything 
seemed fine—the devices and sensors were detected. However, from time to 
time, the DS2482-800 and the connected devices would disappear.

After some digging, I found the cause: I had also connected a SATA/USB 
disk to the Raspberry Pi for storage. Somehow, the disk interferes with 
the I²C interface. When running |i2cdetect -y -r 1|, the I²C addresses 
occasionally disappear.

Has anyone experienced something similar? It doesn’t seem to be a 1-Wire 
issue, but rather a Raspberry Pi flaw.

Thanks,
Nico

-- 
0623391101

[Owfs-developers] [SPAM] Re: Local and remote from C

[Jan K. <jj...@gm...>]

Am 05.04.25 um 15:12 schrieb Michael Hughes via Owfs-developers:
> Is there a way using the C library to open both a connection to a local
> RS-232 1-Wire interface and a TCP connection(s)?
>
Do you mean owcapi? Yes.

Use both the -d and the -s option in the string that you pass to
OW_init() or OW_init_args().

Kind regards

	Jan

[Owfs-developers] Local and remote from C

[Michael H. <ow...@th...>]

Is there a way using the C library to open both a connection to a local
RS-232 1-Wire interface and a TCP connection(s)?

-- 
Michael

[Owfs-developers] Where are we on releases?

[Gregg L. <gre...@gm...>]

Hello!
We've been very quiet lately. So I am wondering of course on releases?
Such as this one: Do we have any new ones scheduled?
-----
Gregg C Levine gre...@gm...
"This signature was still fighting the timewars, Time and again."

Re: [Owfs-developers] Anyone up for porting to TCL9?

[Tomasz T. <to...@pi...>]

On Mon, Mar 03, 2025 at 03:13:18PM +0100, Jan Kandziora wrote:
> Am 27.02.25 um 08:48 schrieb Tomasz Torcz:
> > Hi,
> > 
> >    Tcl recently released version 9. Code needs some porting.
> > Tcl parts of owfs work with Tcl 8.6, but failed when Fedora moved to
> > tcl9.
> > 
> >    Is anyone able to do the porting?  I do not know this part of owfs at
> > all. Fedora package can use tcl8 compatibility packages for few years,
> > but it would be safer to get just get tcl9 compatibility.
> > 
> Tomasz,
> 
> 
> I have an interest in having that ported and I’m likely able to but I
> don’t know when I can setup a Tcl-9 development environment. As OpenSUSE
> Tumbleweed is still at Tcl-8.6 only and I would like to avoid extra
> hoops as setting up Fedora inside a container.


 Hey Jan,

  Don't worry, it's not urgent. Fedora packages are currently broken,
due to errors in tcl8-compat packages (https://bugzilla.redhat.com/show_bug.cgi?id=2346957).
In worst case, I'll disable tcl parts of owfs temporarily.

  Nevertheless, looking forward for Tcl9 to be included in Tumbleweed :)

-- 
Tomasz Torcz               There exists no separation between gods and men:
to...@pi...       one blends softly casual into the other.  — Frank Herbert

Re: [Owfs-developers] Anyone up for porting to TCL9?

[Tomasz T. <to...@pi...>]

On Thu, Feb 27, 2025 at 08:48:25AM +0100, Tomasz Torcz wrote:
>   The porting guide is linked from 

  Sorry, wrong link. Correct is https://www.tcl-lang.org/software/tcltk/9.0.html

-- 
Tomasz Torcz               RIP is irrevelant. Spoofing is futile.
to...@pi...     Your routes will be aggreggated. – Alex Yuriev

[Owfs-developers] Anyone up for porting to TCL9?

[Tomasz T. <to...@pi...>]

Hi,

  Tcl recently released version 9. Code needs some porting.
Tcl parts of owfs work with Tcl 8.6, but failed when Fedora moved to
tcl9.

  Is anyone able to do the porting?  I do not know this part of owfs at
all. Fedora package can use tcl8 compatibility packages for few years,
but it would be safer to get just get tcl9 compatibility.

  The porting guide is linked from owfs-developers owfs <owf...@li...>

-- 
Tomasz Torcz               RIP is irrevelant. Spoofing is futile.
to...@pi...     Your routes will be aggreggated. – Alex Yuriev

Re: [Owfs-developers] Adafruit has introduced an I2C to One-Wire module

[Gregg L. <gre...@gm...>]

Hello!
A hasty P.S, to my earlier posting, This is a DS2484, not one of the
other two that I was originally looking at, and indeed mentioned on
the original Dot Org pages that we are busily migrating. The next
question is one of, has anyone tried that chip out using existing
software? Debian has the 3.2p4 and the 3.2p3 releases. And of course
the Source Forge pages are lagging.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

On Fri, Jul 5, 2024 at 5:35 PM Gregg Levine <gre...@gm...> wrote:
>
> Hello!
> Adafruit has gone and done something amazing, they've introduced a
> module that connects the One-Wire bus to the I2C bus. Here,
> https://tinyurl.com/ada5976 .
>
> So far the learn pages do not show anything regarding our efforts.
> -----
> Gregg C Levine gre...@gm...
> "This signature fought the Time Wars, time and again."

Re: [Owfs-developers] Adafruit has introduced an I2C to One-Wire module

[Paul E. <re...@re...>]

<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I’ve been selling something that does exactly the same thing in the UK since 2010 :)<div><br></div><div>This is the current version:<br><div><br></div><div><div style="display: block;" class=""><a href="https://www.sheepwalkelectronics.co.uk/product_info.php?products_id=73&amp;osCsid=cgmk6frce5p0v2vtcrqv90kj27">https://www.sheepwalkelectronics.co.uk/product_info.php?products_id=73</a><br></div></div><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Paul Everett</div><div dir="ltr"><br><blockquote type="cite">On 5 Jul 2024, at 22:36, Gregg Levine &lt;gre...@gm...&gt; wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><span>Hello!</span><br><span>Adafruit has gone and done something amazing, they've introduced a</span><br><span>module that connects the One-Wire bus to the I2C bus. Here,</span><br><span>https://tinyurl.com/ada5976 .</span><br><span></span><br><span>So far the learn pages do not show anything regarding our efforts.</span><br><span>-----</span><br><span>Gregg C Levine gre...@gm...</span><br><span>"This signature fought the Time Wars, time and again."</span><br><span></span><br><span></span><br><span>_______________________________________________</span><br><span>Owfs-developers mailing list</span><br><span>Owf...@li...</span><br><span>https://lists.sourceforge.net/lists/listinfo/owfs-developers</span><br></div></blockquote></div></div></body></html>

[Owfs-developers] Adafruit has introduced an I2C to One-Wire module

[Gregg L. <gre...@gm...>]

Hello!
Adafruit has gone and done something amazing, they've introduced a
module that connects the One-Wire bus to the I2C bus. Here,
https://tinyurl.com/ada5976 .

So far the learn pages do not show anything regarding our efforts.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

[Owfs-developers] Owhttpd works on a PiZero2W

[Gregg L. <gre...@gm...>]

Hello!
I just assembled a second DS2436 pod and connected the battery pack
that the PiZero2W uses for power via Powerboost 1000C from Adafruit
for power, and the program told what the battery voltage was, and the
room temp as well.

I also for this second one included a Time-In-A-Can device, in this
case it holds a DS2415 one, it confirms the time of day as well.

Some of you are wondering why I am doing this, there are two parts of
obvious to this, the merely obvious is that I needed to confirm for
myself that it works, and the incredibly obvious was one of, I can't
recall if anyone had gotten these two or just the DS2436 part to work
with these programs and on this platform.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

[Owfs-developers] Owhttpd works on a Raspberry Pi Zero

[Gregg L. <gre...@gm...>]

Hello!
This list is too quiet so I thought I'd post my latest and greatest
project. That of installing the owfs programs on a Raspberry Pi Zero.

Currently I have a traditional serial adapter plugged into an FTDI
based serial adapter with the DE9 connector. Basically the program is
reporting the power running to a boost device from Adafruit at 3.68
(It shows 4.7 unloaded.) and the room temperature at 24C on a DS2436.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

Re: [Owfs-developers] Raspberry Pi busmaster GPIO connector

[Jan K. <jj...@gm...>]

Am 02.04.24 um 06:16 schrieb Gregg Levine:
> Hello! I've a new project taking shape at the moment. And it involves
> making use of OWFS on the Raspberry Pi, a Pi Zero Wifi WH device in
> fact. And I recalled that when I enabled the GPIO settings such as
> the Serial port there, and typically the I2C settings, I would see
> but not enable the one for One-Wire. Now the question is one of which
> GPIO one that the system selected. The website makes a reference to
> someone's work, but does not provide references.
>
The bitbanging onewire host works with GPIO4 (pin 7 on the 40-pin
connector) by default on the Raspberry Pi. Use

	dtoverlay=w1-gpio

in /boot/config.txt. You can also select a different GPIO with

	dtoverlay=w1-gpio,gpiopin=4

with 4 being the GPIO you want. (Note those are called "gpiopin" but
it's not the pin numbers on the 40-pin connector but the GPIO numbers.)

The additional option pullup=1 may be used to enable the high-side
transistor of the GPIO for a strong pullup during some operations.

Note that the Raspberry Pi is a 3.3V device, so that Onewire is going to
be a 3.3V Onewire. You have to wire a 1.5kΩ resistor to +3.3V to make it
work correctly. If you need a 5V Onewire instead, use a level shifter as
this one:

|
|        +5V ----.           ,-----+---- +3.3V
|                |           |     |
|                \         G |     \
|                /      –––––'     /
|                \    ––– – –––    \
|                |     |  ^  |     |
| 5V bus line ---+-----'  '--+-----+---- 3.3V bus line
|                      D     S
|


The transistor is a small signal N-channel enhancement mode MOSFET, e.g.
a 2N7000, BS170 or MMBF170. The +5V pullup must be around 2.7kΩ.

Kind regards

	Jan

Re: [Owfs-developers] Raspberry Pi busmaster GPIO connector

[Gregg L. <gre...@gm...>]

Hello!
I returned this to the list, because I wanted everyone else to
comment. Right now I'm busily creating my ideas. Your gadget, which I
see is for sale from a good company, is a good idea, but I'm looking
at this from the perspective of how Adafruit suggested it originally.
Also I've enabled composite video output on the one I'm using today,
and was using earlier to perfect the ideas behind composite video out
from these devices. Now that's something worth writing about,
elsewhere.

Consider this, the original company developed a part for "smart
battery packs", that's the direction I'm going in for this job.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

On Tue, Apr 2, 2024 at 8:14 AM Nico Bouthoorn <ni...@cu...> wrote:
>
> Hi,
>
> Do you have something like this? https://fstab.nl/Raspberry-Pi-zero
>
> my docs, this is working at my place.
>
> Succes,
>
> Nico
>
>
> On 4/2/24 06:16, Gregg Levine wrote:
> > Hello!
> > I've a new project taking shape at the moment. And it involves making
> > use of OWFS on the Raspberry Pi, a Pi Zero Wifi WH device in fact. And
> > I recalled that when I enabled the GPIO settings such as the Serial
> > port there, and typically the I2C settings, I would see but not enable
> > the one for One-Wire. Now the question is one of which GPIO one that
> > the system selected. The website makes a reference to someone's work,
> > but does not provide references.
> > -----
> > Gregg C Levine gre...@gm...
> > "This signature fought the Time Wars, time and again."
> >
> >
> > _______________________________________________
> > Owfs-developers mailing list
> > Owf...@li...
> > https://lists.sourceforge.net/lists/listinfo/owfs-developers
>
> --
> 0623391101
>

[Owfs-developers] Raspberry Pi busmaster GPIO connector

[Gregg L. <gre...@gm...>]

Hello!
I've a new project taking shape at the moment. And it involves making
use of OWFS on the Raspberry Pi, a Pi Zero Wifi WH device in fact. And
I recalled that when I enabled the GPIO settings such as the Serial
port there, and typically the I2C settings, I would see but not enable
the one for One-Wire. Now the question is one of which GPIO one that
the system selected. The website makes a reference to someone's work,
but does not provide references.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

[Owfs-developers] Connection to more then one server

[Michael H. <ow...@th...>]

From the C API, can you connect to more than one owserver?

-- 
Michael

[Owfs-developers] Surplus Devices

[Mick S. <mi...@su...>]

Hi People,

I have some bits that are of no further use to me and wonder if they may 
be of use to anyone else.

Qty 1 Embedded Data Systems HA7E serial to 1-wire adapter

Qty 2 DS9097U Dallas Maxim Universal 1-Wire COM Port Adapter

Qty 3 Hobby-boards 8 channel I/O Board

All believed to be in working order.  I am in the UK.  Anyone interested?

Cheers

Mick

Re: [Owfs-developers] How to find 1-wire device names?

[Chris G. <cl...@is...>]

On Sun, May 08, 2022 at 01:50:01PM +0100, Mick Sulley wrote:
> If you have ow-shell installed then owdir should show all the devices on the
> network
> 
Well I didn't have ow-shell installed but I have now, just what I
needed, thank you!

-- 
Chris Green

Re: [Owfs-developers] How to find 1-wire device names?

[Mick S. <mi...@su...>]

If you have ow-shell installed then owdir should show all the devices on 
the network

Mick

On 08/05/2022 13:11, Chris Green wrote:
> I seem to have lost a couple of 1-wire devices, they were working a
> while ago but now don't seem to be appearing.  I've tried re-running
> owfs but that has done no good.
>
> Is there some sort of debugging mode available and/or a way to list
> devices on the 1-wire bus?
>

[Owfs-developers] How to find 1-wire device names?

[Chris G. <cl...@is...>]

I seem to have lost a couple of 1-wire devices, they were working a
while ago but now don't seem to be appearing.  I've tried re-running
owfs but that has done no good.

Is there some sort of debugging mode available and/or a way to list
devices on the 1-wire bus?

-- 
Chris Green

Re: [Owfs-developers] owfs and BitBang

[Gregg L. <gre...@gm...>]

Hello!
How'd you wire yours? He's got a strange view of that device. Well
mostly as the ones I would use are all parasitic powered, which was of
course not driven by a VCC3 line someplace. And the line he chose
could be used for One-Wire communications via OWFS, as it's
documented, someplace.
-----
Gregg C Levine gre...@gm...
"This signature fought the Time Wars, time and again."

On Tue, Mar 29, 2022 at 6:38 PM Mick Sulley <mi...@su...> wrote:
>
> I have just set up a Pi zero with a temp sensor following this -
>
> https://www.circuitbasics.com/raspberry-pi-ds18b20-temperature-sensor-tutorial/
>
> It works OK but I am wondering if I can use the owfs modules with this?
> If so what do I set as the server in /etc/owfs.conf
>
> I don't see anything in the docs
>
> Thanks
>
> Mick
>
>
>
> _______________________________________________
> Owfs-developers mailing list
> Owf...@li...
> https://lists.sourceforge.net/lists/listinfo/owfs-developers

[Owfs-developers] owfs and BitBang

[Mick S. <mi...@su...>]

I have just set up a Pi zero with a temp sensor following this -

https://www.circuitbasics.com/raspberry-pi-ds18b20-temperature-sensor-tutorial/

It works OK but I am wondering if I can use the owfs modules with this?  
If so what do I set as the server in /etc/owfs.conf

I don't see anything in the docs

Thanks

Mick