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Author Topic: 1 wire UV Sensor  (Read 15995 times)

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Offline mikeym

  • Posts: 1,066
  • Thornhurst, Pa USA
    • MikeyMs Thornhurst,PA Weather
Re: 1 wire UV Sensor
« Reply #15 on: May 20, 2008, 08:29:59 PM »
Hi Mick

I for one would be interested in the 1-wire interface to the Oregon UV sensors. Your work has been great. Reminds me of my tinkerings about 40 or more years ago. Keep up the good work.

Cheers

 :D

MikeyM
http://mikeymsweather.com/

Another VERY Happy WD user
Jetway Dual Core Atom D525 1.8 GHZ  2.0 GB RAM
Davis Vantage Pro wireless w/ Davis solar sensor
Laser Snow Depth Sensor LR4/Fluke 414D working in WD thanks to Brian

Offline MichaelPT

  • Posts: 629
  • Staffordshire Nr Leek
    • Weather-Above
Re: 1 wire UV Sensor
« Reply #16 on: May 24, 2008, 11:08:04 PM »
Hi
Hi everybody

I've worked out how to connect the UV sensor to the 1 wire network
as soon as I finished my lightning radar project, I will start testing   sometime next month
mick :)

Offline StokesValleyWeather

  • Posts: 59
  • Stokes Valley, Lower Hutt, New Zealand
    • Stokes Valley Weather
Re: 1 wire UV Sensor
« Reply #17 on: June 01, 2008, 07:42:41 AM »
Hi all,

I am certainly keen on building some sort of 1-Wire UV Sensor from scratch. Am considering purchasing a Oregon UVR 138 as a first step with the possibly converting that to a 1-wire if someone could give me a Circuit Diagram of one.

The other thing I was considering was using (as Mike above) a 1-wire battery monitor DS2438Z and either using the VSense+ input or the VAD depending on the output of UV sensor and the Opamp circuit. Anyone got any preliminary designs that would consider sharing?

I did find the following UV sensor and circuits which is a starting point. http://www.kyosemi.co.jp/product/data/en/KPDU34PS1.html

As I have only basic Electronics knowledge, would anyone consider collaborating with me on this? The only issue I see then would be calibrating it accurately.

Colin, I would be keen to talk to you on the phone to see what you have.

Thanks.

Cheers
Derek C
SV Weather, LH, NZ
Regards
Derek
Stokes Valley Weather,
Lower Hutt, New Zealand.

Offline MichaelPT

  • Posts: 629
  • Staffordshire Nr Leek
    • Weather-Above
Re: 1 wire UV Sensor
« Reply #18 on: June 03, 2008, 10:10:58 PM »
Hi everybody

I am currently working on a instruction sheet how to convert the UV sensor for the Oregon weather station
so people can have a go themselves or find somebody to do for them

I will also add a page with my suggestions for the 1 wire UV sensor

I will also suggest how to calibrate the unit in whether display 

I'm hoping to have all the photographs and instructions completed by the end of this month

mick :)

Offline JohnnyBoy

  • Posts: 373
  • Copthorne, West Sussex, UK
    • John's Library
Re: 1 wire UV Sensor
« Reply #19 on: June 04, 2008, 05:36:21 PM »
Hello Mick,

That sounds good, will be watching.

John


Offline MichaelPT

  • Posts: 629
  • Staffordshire Nr Leek
    • Weather-Above
Re: 1 wire UV Sensor
« Reply #20 on: June 05, 2008, 12:06:02 PM »
Hi everybody

I have now completed, some instructions on converting the UV on my webpage for the Oregon weather station
I have also put a link with some information on my idea
to use this with the 1 wire system

mick :)


Offline mikeym

  • Posts: 1,066
  • Thornhurst, Pa USA
    • MikeyMs Thornhurst,PA Weather
Re: 1 wire UV Sensor
« Reply #21 on: June 05, 2008, 12:35:07 PM »
Hi Mick

Looks like the only sensor available in the USA us the UVR 128. Can I assume the only difference is the wireless freq ??
Thanks for the work on this project.

Cheers

 :D

MikeyM
http://mikeymsweather.com/

Another VERY Happy WD user
Jetway Dual Core Atom D525 1.8 GHZ  2.0 GB RAM
Davis Vantage Pro wireless w/ Davis solar sensor
Laser Snow Depth Sensor LR4/Fluke 414D working in WD thanks to Brian

Offline MichaelPT

  • Posts: 629
  • Staffordshire Nr Leek
    • Weather-Above
Re: 1 wire UV Sensor
« Reply #22 on: June 05, 2008, 01:07:57 PM »
Hi

Yes it will be only the frequency the idea is to replace the transmitter
using your extra temperature sensor, or hobby board moisture sensor seems the best bet
to interface with the 1 wire system

mick




Hi Mick

Looks like the only sensor available in the USA us the UVR 128. Can I assume the only difference is the wireless freq ??
Thanks for the work on this project.

Cheers

 :D

MikeyM

Offline mikeym

  • Posts: 1,066
  • Thornhurst, Pa USA
    • MikeyMs Thornhurst,PA Weather
Re: 1 wire UV Sensor
« Reply #23 on: June 05, 2008, 11:55:46 PM »
Thanks Mick

 :D

MikeyM
http://mikeymsweather.com/

Another VERY Happy WD user
Jetway Dual Core Atom D525 1.8 GHZ  2.0 GB RAM
Davis Vantage Pro wireless w/ Davis solar sensor
Laser Snow Depth Sensor LR4/Fluke 414D working in WD thanks to Brian

Offline StokesValleyWeather

  • Posts: 59
  • Stokes Valley, Lower Hutt, New Zealand
    • Stokes Valley Weather
Re: 1 wire UV Sensor
« Reply #24 on: June 06, 2008, 08:33:48 AM »
Hi  MichaelPT,

Can you post the link to your to you info re the 1-wire Solar. Thanks

Regard
Derek Chapman
Stokes Valley Weather
Lower Hutt, NZ.
Regards
Derek
Stokes Valley Weather,
Lower Hutt, New Zealand.

Offline MichaelPT

  • Posts: 629
  • Staffordshire Nr Leek
    • Weather-Above
Re: 1 wire UV Sensor
« Reply #25 on: June 09, 2008, 05:16:16 PM »
Hi

http://www.weather-above.com/uv1%20mod%20introductions.html


Hi  MichaelPT,

Can you post the link to your to you info re the 1-wire Solar. Thanks

Regard
Derek Chapman
Stokes Valley Weather
Lower Hutt, NZ.


Offline skyewright

  • Posts: 2,004
  • Isle of Skye, Scotland
    • 24 Elgol
Re: 1 wire UV Sensor
« Reply #26 on: August 30, 2008, 02:10:31 PM »
I have now completed, some instructions on converting the UV on my webpage for the Oregon weather station
A question about the instructions, if I may...

In the text below Fig 3 you write
Quote
I recommend using a screened cableit is important to measure out exactly 27 inches

I'm intrigued to know the significance of the 27 inches.

PS. I just got brave (reckless?) and took the back off a THGR928N (the only awkward bit is that the top pair of battery connectors are attached to the front so, once you have the screws out, you may need to apply a little pressure on those too to ease the case apart). Once apart you can see that the RH and T sensors (right at the bottom of the case) are well off the PCB (right at the top of the case) and connected to the PCB by thin wires. Mmmmm, I wonder that gives scope for a single 'extra' sensor to be the basis for two mods (thus making the most of the limited channels), and if the same arrangement exists in the other 'extra sensors', particularly the OS-THGR810, if that gives scope for 'moded' sensors on the WMR100 & 200 (for which there is not yet a 'probe on a wire' extra sensor)...

PPS. The reassembled THGR928N is working fine.  :)
Regards
David

Offline mikeym

  • Posts: 1,066
  • Thornhurst, Pa USA
    • MikeyMs Thornhurst,PA Weather
Re: 1 wire UV Sensor
« Reply #27 on: August 30, 2008, 08:38:16 PM »
btw I found out the UVR128 is completely different internally than the UVR138. I took it apart, but haven't had time to see if I can found the output of the sensor circuit to interface to the 1-wire network. If I make any progress I'll post the results.

Cheers

 :D

MikeyM
http://mikeymsweather.com/

Another VERY Happy WD user
Jetway Dual Core Atom D525 1.8 GHZ  2.0 GB RAM
Davis Vantage Pro wireless w/ Davis solar sensor
Laser Snow Depth Sensor LR4/Fluke 414D working in WD thanks to Brian

Offline MichaelPT

  • Posts: 629
  • Staffordshire Nr Leek
    • Weather-Above
Re: 1 wire UV Sensor
« Reply #28 on: August 30, 2008, 09:02:18 PM »
Hi

To bring the UV1 in a acceptable range for calibration you need to place a resistor and the cable length gives a very small resistance
which works out really well   and this gave me a standardised measurement
You can use any temperature sensor all you need to do is locate like you have done the thermistor and carefully remove the thermistor  and connect
a screen cable to this then follow the instructions about the UV conversion, 


UVR128 is my second choice for the modification have not got round to it yet,
is any chance you could take some close-up pictures of the circuit board and circuitry

mick :)






A question about the instructions, if I may...

In the text below Fig 3 you write
I'm intrigued to know the significance of the 27 inches.

PS. I just got brave (reckless?) and took the back off a THGR928N (the only awkward bit is that the top pair of battery connectors are attached to the front so, once you have the screws out, you may need to apply a little pressure on those too to ease the case apart). Once apart you can see that the RH and T sensors (right at the bottom of the case) are well off the PCB (right at the top of the case) and connected to the PCB by thin wires. Mmmmm, I wonder that gives scope for a single 'extra' sensor to be the basis for two mods (thus making the most of the limited channels), and if the same arrangement exists in the other 'extra sensors', particularly the OS-THGR810, if that gives scope for 'moded' sensors on the WMR100 & 200 (for which there is not yet a 'probe on a wire' extra sensor)...

PPS. The reassembled THGR928N is working fine.  :)

Offline mikeym

  • Posts: 1,066
  • Thornhurst, Pa USA
    • MikeyMs Thornhurst,PA Weather
Re: 1 wire UV Sensor
« Reply #29 on: August 31, 2008, 12:50:31 AM »
Hi MIck

I'll try to get some pics of the UVR128 for you tomorrow as it's getting late here tonight.

Cheers

 :D

MikeyM
http://mikeymsweather.com/

Another VERY Happy WD user
Jetway Dual Core Atom D525 1.8 GHZ  2.0 GB RAM
Davis Vantage Pro wireless w/ Davis solar sensor
Laser Snow Depth Sensor LR4/Fluke 414D working in WD thanks to Brian