Author Topic: Convert WH31 to WH32  (Read 7038 times)

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Offline davidefa

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Convert WH31 to WH32
« on: December 31, 2021, 06:27:21 AM »
If you want to convert a WH31 to a WH32 you can do the following:
1) set dip switch 1,2,3 to OFF ( don't know if it is needed, but safer as wh32 does not have a channel selector )
2) remove solder blob J8 ( it is located on the left of the board, near the black wire )

P.S.
You can still use dip switch 4 to set °C or °F

P.P.S.
According to ecowitt naming:
- WH31 is the multichannel T/H sensor
- WH32 is the main outdoor T/H sensor

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« Last Edit: November 30, 2022, 03:55:19 PM by davidefa »

Offline BoDuke

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Re: Convert WH31 to WH32
« Reply #1 on: December 31, 2021, 10:08:17 AM »
Thank you for sharing!  Information like this is always great to see.  Unfortunately I personally have no need to do this (at least yet) but always wondered if something like that was possible.  Someday I'd like to see about modifying a WH51 soil moisture sensor to sense position either by resistance or capacitance.
« Last Edit: January 02, 2022, 12:07:01 PM by BoDuke »

Offline zoomx

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Re: Convert WH31 to WH32
« Reply #2 on: December 31, 2021, 10:40:14 AM »
Great, you discovered to do it without desoldering the dip switch group!

Offline WA4OPQ

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Re: Convert WH31 to WH32
« Reply #3 on: January 01, 2022, 09:14:38 PM »
This will make a guy over on the Facebook Ambient group happy.
He needed a WH32 and I had to tell him that Ambient stopped selling them.

Offline davidefa

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Re: Convert WH31 to WH32
« Reply #4 on: January 01, 2022, 09:34:38 PM »
Forgot to add a small advice:
- after removing the 6 screws, it is better desoldering one of the wires to the battery holder ( not to risk melting the enclosure poking around with the hot tip )

Offline zoomx

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Re: Convert WH31 to WH32
« Reply #5 on: January 02, 2022, 06:00:04 AM »
I didn't find any WH32 on Aliexpress too

Edit:
I successful converted one WH31 at 433MHz that I have.
« Last Edit: January 02, 2022, 11:42:55 AM by zoomx »

Offline davidefa

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Re: Convert WH31 to WH32
« Reply #6 on: January 02, 2022, 12:31:44 PM »
$1 tank you ; - )

Offline Dador

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Re: Convert WH31 to WH32
« Reply #7 on: September 14, 2022, 04:45:30 PM »
Thanks a lot for this tip =D>

Now I have WH32 without spending any money  \:D/

Offline looney2ns

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Re: Convert WH31 to WH32
« Reply #8 on: November 26, 2022, 10:32:26 AM »
So the current Ambient Weather WH31E board layout is somewhat different from the older Wh31B.
There is still a J8, but by default there isn't a solder bridge on it.
Anyone find a way to convert the newer WH31E over to the WH32?




Offline davidefa

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Re: Convert WH31 to WH32
« Reply #9 on: November 26, 2022, 11:33:13 AM »
Could you post a photo ( possibly high resolution ) of the board?

Offline looney2ns

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Re: Convert WH31 to WH32
« Reply #10 on: November 26, 2022, 02:31:00 PM »
Certainly. Thanks.

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Offline zoomx

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Re: Convert WH31 to WH32
« Reply #11 on: November 28, 2022, 11:19:10 AM »
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J8 should be the one indicated by the red arrow

Edit: WH31 should not have any DCF77 antenna, maybe it is another sensor?
« Last Edit: November 28, 2022, 02:51:06 PM by zoomx »

Offline Rover1822

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Re: Convert WH31 to WH32
« Reply #12 on: November 28, 2022, 11:26:23 AM »
Did anyone trace out the board to make sure J8 does the same thing?
Ambient:
  WS-2000
  PM 2.5(2)
  WH31B(2)
  WH40E
  WH31P
EcoWitt:
  GW1100
  GW1000(4)
  WH31(2)
  WH57
  WH51(12),
  WH40
  WH5360B
  WN34S
  WittBoy WS90 + GW2000
  WS90 (other one) + GW1100
Personal Sites: Weather Cam

Offline aaronwt

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Re: Convert WH31 to WH32
« Reply #13 on: November 28, 2022, 02:16:07 PM »
Are the Ambient weather ones different from Ecowitt? Because Amazon has had the WH31 and WH32 sensors on sale for $12.79 and $13.59 the last few days. I just picked up eight more of the WH31 sensors for my GW1100. Which takes me to twenty-four of the WH31 sensors. (I also have two GW1000 base stations)
« Last Edit: November 28, 2022, 02:17:49 PM by aaronwt »
Ecowitt GW1000 x2
Ecowitt GW1100 x1
Ecowitt WH32 x3
Ecowitt WH31 x24
Ecowitt WH41 x2
Ecowitt WH45 x3
Ecowitt WH55 x2

Offline Gyvate

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Re: Convert WH31 to WH32
« Reply #14 on: November 28, 2022, 03:27:02 PM »
Are the Ambient weather ones different from Ecowitt? Because Amazon has had the WH31 and WH32 sensors on sale for $12.79 and $13.59 the last few days. I just picked up eight more of the WH31 sensors for my GW1100. Which takes me to twenty-four of the WH31 sensors. (I also have two GW1000 base stations)
at the hardware level they are identical - the Ambient sensor firmware transmits a flag which makes them recognizable as Ambient sensors for an Ambient console.
Ecowitt consoles ignore this information => Ecowitt 915 MHz consoles can also read (and process and display !) Ambient sensors whereas Ambient consoles refuse to display readings from Ecowitt clone sensors.
WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
Ecowitt WS90(2)1.3.5/1.4.0, WS80(2)1.2.5, WS68, WS69, WH40, WH31, WH31-EP, WN30, WN34L, WN35, WH32, WH32-EP, WH32B, WH57 [Lightning], WH41 [PM2.5], WH51, WH45, WH55
MeteobridgePro(2)[test,prod] 5.8 Mar 01 2024, 15185 - Blake-Larsen Sun Recorder - RPi4/weewx 4.8.0/4.10.2/CumulusMX 3283/Meteobridge RPi4B-2GB(3169)
Barani Meteoshield Pro, MetSpec Rad02 - Ecowitt 5763,34418;WU ISAARB3(WH4000SE),ISAARB22(HP2553), http://meshka.eu

Offline rosshenning

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Re: Convert WH31 to WH32
« Reply #15 on: November 30, 2022, 03:38:30 PM »
The WH32B has the older board in it, like the one in the original post.  I assume there must be something that could be done to this board to convert it to a WH32E?  Does anyone have a photo of the whole board they could share?  There's some other jumpers on the board, like J5 an d J6 that could possibly be what needs to be set.

Offline davidefa

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Re: Convert WH31 to WH32
« Reply #16 on: November 30, 2022, 04:11:19 PM »
Do you want to convert:
- a wh32b main indoor T/H/P sensor
- to a wh31e multichannel T/H sensor?

P.S.
I have both sensors so I can check

Offline Gyvate

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Re: Convert WH31 to WH32
« Reply #17 on: November 30, 2022, 04:16:50 PM »
The WH32B has the older board in it, like the one in the original post.  I assume there must be something that could be done to this board to convert it to a WH32E?  Does anyone have a photo of the whole board they could share?  There's some other jumpers on the board, like J5 an d J6 that could possibly be what needs to be set.
it looks as if you are mixing up names - or have started talking about something else ...
A WH32B (Ecowitt naming) is a 3-in-1 T/RH/P sensor and afaik we have no knowledge of whether and how it might be converted into a WH32 (Ecowitt notation).
I know that the letters A, B at the end of sensor names usually depict the transmission frequency - so an Ecowitt WH32 would be WH32A for 868 MHz, WH32B for 915 MHz etc. - but it's never really used that way.
An Ecowitt WH32B would then be a WH32BA or WH32BB etc.

We are talking here about an Ambient WH31E = Ecowitt WH31 (A, B, C for RF frequencies) to be converted into an Ambient WH32E = Ecowitt WH32 (outdoor).
And - there are versions of an Ecowitt (and Ambient) WH31 sensor which have a DCF77 functionality "on board" - because certain consoles need that to set their clocks.
In normal use with the Ambient Ecowitt clone stations this has no meaning - they are behaving the same way.
WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
Ecowitt WS90(2)1.3.5/1.4.0, WS80(2)1.2.5, WS68, WS69, WH40, WH31, WH31-EP, WN30, WN34L, WN35, WH32, WH32-EP, WH32B, WH57 [Lightning], WH41 [PM2.5], WH51, WH45, WH55
MeteobridgePro(2)[test,prod] 5.8 Mar 01 2024, 15185 - Blake-Larsen Sun Recorder - RPi4/weewx 4.8.0/4.10.2/CumulusMX 3283/Meteobridge RPi4B-2GB(3169)
Barani Meteoshield Pro, MetSpec Rad02 - Ecowitt 5763,34418;WU ISAARB3(WH4000SE),ISAARB22(HP2553), http://meshka.eu

Offline rosshenning

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Re: Convert WH31 to WH32
« Reply #18 on: November 30, 2022, 04:38:08 PM »
Do you want to convert:
- a wh32b main indoor T/H/P sensor
- to a wh31e multichannel T/H sensor?

P.S.
I have both sensors so I can check

I want to convert anything I can find that will work, into a WH32E (which I believe is an outdoor T/H sensor correct?)

The WH32B has the older board in it, like the one in the original post.  I assume there must be something that could be done to this board to convert it to a WH32E?  Does anyone have a photo of the whole board they could share?  There's some other jumpers on the board, like J5 an d J6 that could possibly be what needs to be set.
it looks as if you are mixing up names - or have started talking about something else ...
A WH32B (Ecowitt naming) is a 3-in-1 T/RH/P sensor and afaik we have no knowledge of whether and how it might be converted into a WH32 (Ecowitt notation).
I know that the letters A, B at the end of sensor names usually depict the transmission frequency - so an Ecowitt WH32 would be WH32A for 868 MHz, WH32B for 915 MHz etc. - but it's never really used that way.
An Ecowitt WH32B would then be a WH32BA or WH32BB etc.

We are talking here about an Ambient WH31E = Ecowitt WH31 (A, B, C for RF frequencies) to be converted into an Ambient WH32E = Ecowitt WH32 (outdoor).
And - there are versions of an Ecowitt (and Ambient) WH31 sensor which have a DCF77 functionality "on board" - because certain consoles need that to set their clocks.
In normal use with the Ambient Ecowitt clone stations this has no meaning - they are behaving the same way.

The Unit I have is a WH32B and it came in my Ambient weather kit as the Indoor T/H/P sensor.  After reading the other posts in this thread, I realized that they use the same board for all of their sensors and simply change jumpers, or so it would seem.  The new WH31E has a different board as was pointed out, so out of curiosity, I opened up my WH32B.  I found that it had the exact same board as the original poster shared a photo of.  In fact, I tried soldering different points together and found that it behaved exactly as you would expect from his post.  When I placed a blob of solder on J8, it was recognized as a 31H on channel 3.  I can only imagine that there must be some way to change something in this unit to have it recognized as the Outdoor version of the same thing so that I can override the T/H sensors from my kit and place my wind sensor up high on my roof and have my T/H sensors down in a better location. 

Hopefully that all makes sense?   

If I could buy a WH32E, I would.
« Last Edit: November 30, 2022, 04:45:20 PM by rosshenning »

Offline alanb

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Re: Convert WH31 to WH32
« Reply #19 on: December 01, 2022, 12:01:31 AM »
I love my Ambient WS-2000 and would like to stick with ambientweather.net, but it is sad that Ambient is unwilling to support their loyal customers by carrying necessary replacement/repair/add-on parts like the WH32E. If (or more likely when?) something breaks in my WS-2000, I will probably switch to Ecowitt because of that issue.
Alan - Ambient WS-2000, WH31E x5, WH31L, Ecowitt WN32(WH32E)
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Offline zoomx

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Re: Convert WH31 to WH32
« Reply #20 on: December 01, 2022, 02:06:39 AM »
I believe that WH32 and WH31 used with GW1000 or other connected consoles doesn't have the DFC77 receiver and maybe there is a JP that is used to indicate if there is a receiver or not.
I found a WH32 image

taken from here
and a review on Amazon here
https://www.amazon.com/ECOWITT-Ecowitt-Thermometer-and-Humidity/dp/B07JLRJRLM?th=1
where there is shown the jumpers used by an Ambient sensor, the reviewer claim that using these pads convert a non Ambient sensor in un Ambient one.

Offline Gyvate

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Re: Convert WH31 to WH32
« Reply #21 on: December 01, 2022, 04:45:13 AM »
So that's another approach - convert an Ecowitt WH31 into an Ambient WH31E ...
which will be accepted by an Ambient WS.2000/WS-5000 console
now we know, at least for WH31 and WH32 sensors, how the Ambient firmware lock is detected from

one would still need to verify if this also works with a Ecowitt WH32 outdoor (to convert it into an Ambient WH32E)
as the review is from an Ecowitt WH31

here comes the amazon.com review @zoomx refers to
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« Last Edit: December 01, 2022, 04:48:25 AM by Gyvate »
WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
Ecowitt WS90(2)1.3.5/1.4.0, WS80(2)1.2.5, WS68, WS69, WH40, WH31, WH31-EP, WN30, WN34L, WN35, WH32, WH32-EP, WH32B, WH57 [Lightning], WH41 [PM2.5], WH51, WH45, WH55
MeteobridgePro(2)[test,prod] 5.8 Mar 01 2024, 15185 - Blake-Larsen Sun Recorder - RPi4/weewx 4.8.0/4.10.2/CumulusMX 3283/Meteobridge RPi4B-2GB(3169)
Barani Meteoshield Pro, MetSpec Rad02 - Ecowitt 5763,34418;WU ISAARB3(WH4000SE),ISAARB22(HP2553), http://meshka.eu

Offline Gyvate

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Re: Convert WH31 to WH32
« Reply #22 on: December 01, 2022, 05:24:04 AM »
I believe that WH32 and WH31 used with GW1000 or other connected consoles doesn't have the DFC77 receiver and maybe there is a JP that is used
There are definitely WH31 which have a DCF77 receiver inbuilt - see our WiKi (strangely some are named WH32F-3 for the 3-sensor edition, or just another reseller name like DNT000005, which are an 8-channel DCF77 edition)
And I have one (WH32F-3 with DCF77) myself - use it as spare only.
With a GW1x00 they behave just like normal WH31 sensors
I don't think that a WH32 has originally DCF77 capabilties - but after a conversion from a WH31 DCF77 model it would have.

The WH32F-3 DCF77 sensors are used e.g. with WH2800, they have 3 selectable channels which correspond to the WH31 channels  1, 2, 7.
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« Last Edit: December 01, 2022, 05:32:01 AM by Gyvate »
WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
Ecowitt WS90(2)1.3.5/1.4.0, WS80(2)1.2.5, WS68, WS69, WH40, WH31, WH31-EP, WN30, WN34L, WN35, WH32, WH32-EP, WH32B, WH57 [Lightning], WH41 [PM2.5], WH51, WH45, WH55
MeteobridgePro(2)[test,prod] 5.8 Mar 01 2024, 15185 - Blake-Larsen Sun Recorder - RPi4/weewx 4.8.0/4.10.2/CumulusMX 3283/Meteobridge RPi4B-2GB(3169)
Barani Meteoshield Pro, MetSpec Rad02 - Ecowitt 5763,34418;WU ISAARB3(WH4000SE),ISAARB22(HP2553), http://meshka.eu

Offline zoomx

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Re: Convert WH31 to WH32
« Reply #23 on: December 01, 2022, 05:48:15 AM »
You are right and I have these 3 channel sensor too! I forgot it! It is seen as WH31.
I wrote about it here
https://www.wxforum.net/index.php?topic=40733.0

Maybe one day we will able to know the pads meaning.

Offline kheller2

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Re: Convert WH31 to WH32
« Reply #24 on: December 01, 2022, 02:51:51 PM »
I have a variety of Ambient and Ecowitt WH31/WH32 devices.  Ugh.. sure make me open them all up... :)
Ambient Consoles: WS-2000, WS-1900, WS-1200, WS-2902C, WS-3000-X3, WS-0900-IP(observerIP), WS-1001-WIFI
Ambient Arrays: WH65B
Ambient Sensors: WH31E(3), WH31B(2), WH32B, WH31SM(2), WH31PGW, AQIN, WH31LA(3)
Ambient Spares: WH24B(2), WH25B.
Ecowitt: HP2551BU, GW1000B(dead), GW1100B(2), GW2000B
Ecowitt Sensors: WH51, WN34BL, WN34(2), WH31, WH41, WH40