Inpeed e-vane?

[skyewright]

I'm hoping to link an Inspeed e-Vane into a 1-wire system for wind direction.

http://www.inspeed.com/wind_speed_direction/Vane.asp

It needs an input voltage of 5V, and provides an analogue output of 0-5V.

I suspect that the HVAC board might do the job of reading the output, with power injection providing the input but I'm no sort of expert - I've not done any real 1-wire yet, just read Weather Toys!

All suggestions about how I might achieve this welcome!

 

[ericvic]

I'm hoping to link an Inspeed e-Vane into a 1-wire system for wind direction.

http://www.inspeed.com/wind_speed_direction/Vane.asp

It needs an input voltage of 5V, and provides an analogue output of 0-5V.

I suspect that the HVAC board might do the job of reading the output, with power injection providing the input but I'm no sort of expert - I've not done any real 1-wire yet, just read Weather Toys!

All suggestions about how I might achieve this welcome!

Using the HVAC Monitor board would require a bit of modification but you could probably hook it up in place of the humidity sensor on our humidity board. If you want to try that I can put together a kit without any of the sensors but with the DS2438 chip. Just contact me at [email protected] and I can get you what the price would be without any sensors. Also if you do try it let me know how it works out.

Eric

 

[skyewright]

Using the HVAC Monitor board would require a bit of modification but you could probably hook it up in place of the humidity sensor on our humidity board. If you want to try that I can put together a kit without any of the sensors but with the DS2438 chip. Just contact me at [email protected] and I can get you what the price would be without any sensors. Also if you do try it let me know how it works out.

I'll take you up on that and I'd certainly let you know how I get on, but I need to think about the rest of my order too, so it may be a few days before you hear from me.

PS. I already have the vortex and the e-vane. They "feel" well engineered. Just using breath I can start the anemometer rotating at as little as 0.5mph (as measured by the "bicycle computer"). I also like that it has a small projected area and can sit right in line with the axis of pole thus keeping strain on the pole to a minimum - it can get very windy round here (Isle of Skye, Scotland, UK).

 

[tparvais]

Skyewright, please keep us posted, as I'm also interested by this vane.

Have you also tried their VORTEX anemometer with 1-wire interface ? Which HB module have you used ?

Thomas

 

[skyewright]

Skyewright, please keep us posted, as I'm also interested by this vane.

Will do. It may take a little while. I hope to place my order within a few days, then there will be delivery to the UK, then time to build the system...

Have you also tried their VORTEX anemometer with 1-wire interface ? Which HB module have you used ?

I don't have any 1-wire stuff yet[1]. I will be ordering a HB Dual Counter with the intention of connecting that to the Vortex. In theory at least it is then just a matter of 'talking' to the counter and doing the appropriate maths on the changing count value...


[1] Last weekend my OS WMR928 anemometer failed during some very 'interesting' weather. The unit is almost certain to be replaced under warranty but that event was the trigger to get me moving on setting up a 1-wire alternative (my thinking was already heading that way, but I'd not got further than reading "Weather Toys"...). Because it will be a while till I can have the full 1-wire in place, I decided to spend the extra few £/$ and ordered the Vortex package that comes complete with a "bicycle computer" - that way I hope to have a fallback system, albeit one that requires periodic manual reading, in place even before the 1-wire system is set up. Supply of the Inspeed gear was very quick as I used a UK supplier (Audon Electronics).
If the weather is okay at the weekend I hope to mount the Vortex on my mast, with the bicycle computer in a transparent plastic food box (e.g. 'Tupperware') at a convenient height. If I'm really fortunate I'll have the WMR928 replacement back by then too - it will be interesting to compare figures...

 

[tparvais]

....
. Supply of the Inspeed gear was very quick as I used a UK supplier (Audon Electronics).

Interesting for European people to order weather sensor to Audon ! Prices seem to be attractive.

I wonder about accuracy of Vortex products vs. AAG ?

Thomas

 

[skyewright]

Interesting for European people to order weather sensor to Audon ! Prices seem to be attractive.

It may of course be that some of their stock dates from when the £/$ exchange rate was very different...

I wonder about accuracy of Vortex products vs. AAG ?

I don't know about that, but I do know someone who has a Vortex anemometer and a Davis VP2. He finds the values that he obtains from the Vortex are "very similar to the Davis".

 

[tparvais]

Hello

I'm also lookng at Davis anemometer and rain gauge:

Anemometer + airvane Davis #7911 ==> available at very good price on http://www.provantage.com.
output: speed: on/off
speed: potentiometer 20kohm

Raingauge #7852: 0.2mm mm rain per pulse.

Should be possible to add 1-wire counter or A/D

Have you already done this ?

Thomas

 

[dpenezic]

Hello

I'm also lookng at Davis anemometer and rain gauge:

Anemometer + airvane Davis #7911 ==> available at very good price on http://www.provantage.com.
output: speed: on/off
speed: potentiometer 20kohm

Raingauge #7852: 0.2mm mm rain per pulse.

Should be possible to add 1-wire counter or A/D

Have you already done this ?

Thomas

I have Davis raingauge and that device work very god with HB dual counter board, for other device, I may only said it is possible , but you will need some more hardware work done before connect to 1-wire chip (try with some AD converter like DS2438)

Dubravko

 

[Macca]

Hi Guys,

There has been some discussion in various 1-wire forums that the 1-wire wind instrument is no longer being made by Dallas/Maxim and/or stocked by HB or AAG. Will the Inspeed device be a suitable replacement for the tradition 1-wire WX Station Wind instrument?

It would be great to get some clarification from Eric on the future direction of the 1-wire wind sensor?

I'll be watching this thread with interest to see how the Inspeed develops...

Cheers,
Andrew

Hello

I'm also lookng at Davis anemometer and rain gauge:

Anemometer + airvane Davis #7911 ==> available at very good price on http://www.provantage.com.
output: speed: on/off
speed: potentiometer 20kohm

Raingauge #7852: 0.2mm mm rain per pulse.

Should be possible to add 1-wire counter or A/D

Have you already done this ?

Thomas

I have Davis raingauge and that device work very god with HB dual counter board, for other device, I may only said it is possible , but you will need some more hardware work done before connect to 1-wire chip (try with some AD converter like DS2438)

Dubravko

 

[skyewright]

I'll be watching this thread with interest to see how the Inspeed develops...

Sorry for the delay on trying this out, I've been exceptionally busy with various unavoidable things. Last weekend I soldered a flying lead onto the board but then ran out of any further spare time (it's many years since I last held a soldering iron, so it took longer than you might imagine!). Maybe next weekend I'll be able to attach and test it on the basic 1-wire setup I prepared the previous weekend.

PS. Eric: If you ever get around to re-jigging the Temp/Humidity/Solar board layout it would be great if the 3 holes for the humidity sensor were adjusted so that they matched the pitch of a screw terminal block (I don't think they do at present), then you could offer 'terminal block in place of humidity sensor" as another variant for general purpose use of the DS2438 even for those of us who have little confidence or competence with a soldering iron!

 

[ericvic]

I'll be watching this thread with interest to see how the Inspeed develops...

Sorry for the delay on trying this out, I've been exceptionally busy with various unavoidable things. Last weekend I soldered a flying lead onto the board but then ran out of any further spare time (it's many years since I last held a soldering iron, so it took longer than you might imagine!). Maybe next weekend I'll be able to attach and test it on the basic 1-wire setup I prepared the previous weekend.

PS. Eric: If you ever get around to re-jigging the Temp/Humidity/Solar board layout it would be great if the 3 holes for the humidity sensor were adjusted so that they matched the pitch of a screw terminal block (I don't think they do at present), then you could offer 'terminal block in place of humidity sensor" as another variant for general purpose use of the DS2438 even for those of us who have little confidence or competence with a soldering iron!

If your experiment works out well then I may offer a completely new general purpose board based on the DS2438.

Eric

 

[mikeym]

I'll be watching this thread with interest to see how the Inspeed develops...

Sorry for the delay on trying this out, I've been exceptionally busy with various unavoidable things. Last weekend I soldered a flying lead onto the board but then ran out of any further spare time (it's many years since I last held a soldering iron, so it took longer than you might imagine!). Maybe next weekend I'll be able to attach and test it on the basic 1-wire setup I prepared the previous weekend.

PS. Eric: If you ever get around to re-jigging the Temp/Humidity/Solar board layout it would be great if the 3 holes for the humidity sensor were adjusted so that they matched the pitch of a screw terminal block (I don't think they do at present), then you could offer 'terminal block in place of humidity sensor" as another variant for general purpose use of the DS2438 even for those of us who have little confidence or competence with a soldering iron!

If your experiment works out well then I may offer a completely new general purpose board based on the DS2438.

Eric

Eric the board that you built for me minus the humidy and solar sensor has worked very well with the ultrasonic snow depth sensor which outputs a 0 - 5 v analog signal. The terminal block or a new general purpose board would be GREAT. Keep up the good work.

Cheers

MikeyM

 

[skyewright]

I got the board and e-Vane connected up today using the pass-through connection on the hub to have power injection available.

Using 1-Wire Viewer the DS2438's A to D tab gave values as follows:

Channel 0: 4.98
Channel 1: Varying from 0.25 to 4.52 then back to 0.25 as the vane was rotated, reading 2.46 when halfway round.
Channel 2: 0

A couple of minor observations:

1) Documentation and reality for wire colouring was inconsistent, with the documentation quoting two different schemes in different places and the real wire not matching either, but all flavours had black as ground and red as supply, so I just assumed that whatever was left must be the output and that worked.

2) The documentation states that the unit is supplied with 'NULL' output (by which I assume they mean the changeover point, since actual output
is between 5% and 95% of input and thus never zero) set to be when the vane is pointing along the bracket.

With my unit at least that was not the case - the change from 0.25 to 4.52 was with the vane at right angles to the bracket.

Not a major issue and the NULL point is adjustable anyway but just thought I'd mention it. For convenience I've now adjusted the unit so that NULL really is with the vane pointing along the bracket.

 

[HansF]

I found a IR-sensor requiring 5V 1mA which I'd like to try with my 1-Wire network. How's the status on the general purpose board with the 2438, Eric? Cheers,

Hans

I got the board and e-Vane connected up today using the pass-through connection on the hub to have power injection available.

Using 1-Wire Viewer the DS2438's A to D tab gave values as follows:

Channel 0: 4.98
Channel 1: Varying from 0.25 to 4.52 then back to 0.25 as the vane was rotated, reading 2.46 when halfway round.
Channel 2: 0

A couple of minor observations:

1) Documentation and reality for wire colouring was inconsistent, with the documentation quoting two different schemes in different places and the real wire not matching either, but all flavours had black as ground and red as supply, so I just assumed that whatever was left must be the output and that worked.

2) The documentation states that the unit is supplied with 'NULL' output (by which I assume they mean the changeover point, since actual output
is between 5% and 95% of input and thus never zero) set to be when the vane is pointing along the bracket.

With my unit at least that was not the case - the change from 0.25 to 4.52 was with the vane at right angles to the bracket.

Not a major issue and the NULL point is adjustable anyway but just thought I'd mention it. For convenience I've now adjusted the unit so that NULL really is with the vane pointing along the bracket.