Rain calculation

[Hserfontein]

Hi Rob,
I agree with afeno, this is an excellent project and perfectly documented :)
I would like to add my experience to your project. I did some vigorous testing on the rain calculation and found that a factor of "*25.4/1000.0" (instead of 25.0), yields a 100% accurate result compared to the Oregon base station.
The calculations should therefor read as follows:

void rain(){
rainTotal = float(((nyb(18)*100000)+(nyb(17)*10000)+(nyb(16)*1000)+(nyb(15)*100)+(nyb(14)*10)+nyb(13))*25.4/1000.0);
//Serial.println((nyb(18)*100000)+(nyb(17)*10000)+(nyb(16)*1000)+(nyb(15)*100)+(nyb(14)*10)+nyb(13),DEC);
rainRate = float(((nyb(8)*10000)+(nyb(9)*1000)+(nyb(10)*100)+(nyb(11)*10)+nyb(12))*25.4/1000.0);
//Serial.println((nyb(8)*10000)+(nyb(9)*1000)+(nyb(10)*100)+(nyb(11)*10)+nyb(12),DEC);

I am not sure, but I think it has to do with the fact that there are 25.4 mm in an inch.

Regards,
Hennie

[robwlakes]

Thanks Hennie, I am happy to add in your refinement. I am about to add in the latest version that also has the UV detector incorporated. So I will update the rainfall conversion factor at that time and give you due acknowledgement. The new version also incorporates an RGB LED that signals with a colour as each sensor is successfully logged. I don't have the circuit diagram drawn yet to accompany it so it may be a little while before the whole thing is updated. I am pleased with your interest in the project and assistance, Rob

…

On 12/02/17 20:54, Hserfontein wrote: Hi Rob, I agree with afeno, this is an excellent project and perfectly documented :) I would like to add my experience to your project. I did some vigorous testing on the rain calculation and found that a factor of "*25.4/1000.0" (instead of 25.0), yields a 100% accurate result compared to the Oregon base station. The calculations should therefor read as follows: void rain(){ rainTotal = float(((nyb(18)*100000)+(nyb(17)*10000)+(nyb(16)*1000)+(nyb(15)*100)+(nyb(14)*10)+nyb(13))*25.4/1000.0); //Serial.println((nyb(18)*100000)+(nyb(17)*10000)+(nyb(16)*1000)+(nyb(15)*100)+(nyb(14)*10)+nyb(13),DEC); rainRate = float(((nyb(8)*10000)+(nyb(9)*1000)+(nyb(10)*100)+(nyb(11)*10)+nyb(12))*25.4/1000.0); //Serial.println((nyb(8)*10000)+(nyb(9)*1000)+(nyb(10)*100)+(nyb(11)*10)+nyb(12),DEC); I am not sure, but I think it has to do with the fact that there are 25.4 mm in an inch. Regards, Hennie — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#5>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGzc5VLXiUQ-Omq6K4_8We6KqBPLxsq0ks5rbtbBgaJpZM4L-cVI>.

-- *Rob Ward* Lake Tyers Beach, 3909 Lake Tyers Beach Website <http://www.laketyersbeach.net.au> Ubuntu Mate - A great OS <https://ubuntu-mate.org/>

[Hserfontein]

Hi Rob, I plan to add a hardware real time clock and SD card interface to mine to add a time stamp and store the data on the SD card, to make it standalone. I do not want to keep a computer running 24/7 just to record my weather data. Currently I am using CoolTerm to capture and store the data from the USB interface. Looking forward to any new devlopments from your side. Kind Regards Hennie Serfontein (Snr) From: Rob Ward [mailto:[email protected]] Sent: 12 February 2017 13:58 To: robwlakes/ArduinoWeatherOS <[email protected]> Cc: Hennie Serfontein Snr <[email protected]>; Author <[email protected]> Subject: Re: [robwlakes/ArduinoWeatherOS] Rain calculation (#5) Thanks Hennie, I am happy to add in your refinement. I am about to add in the latest version that also has the UV detector incorporated. So I will update the rainfall conversion factor at that time and give you due acknowledgement. The new version also incorporates an RGB LED that signals with a colour as each sensor is successfully logged. I don't have the circuit diagram drawn yet to accompany it so it may be a little while before the whole thing is updated. I am pleased with your interest in the project and assistance, Rob

…

On 12/02/17 20:54, Hserfontein wrote: Hi Rob, I agree with afeno, this is an excellent project and perfectly documented :) I would like to add my experience to your project. I did some vigorous testing on the rain calculation and found that a factor of "*25.4/1000.0" (instead of 25.0), yields a 100% accurate result compared to the Oregon base station. The calculations should therefor read as follows: void rain(){ rainTotal = float(((nyb(18)*100000)+(nyb(17)*10000)+(nyb(16)*1000)+(nyb(15)*100)+(nyb(14)*10)+nyb(13))*25.4/1000.0); //Serial.println((nyb(18)*100000)+(nyb(17)*10000)+(nyb(16)*1000)+(nyb(15)*100)+(nyb(14)*10)+nyb(13),DEC); rainRate = float(((nyb(8)*10000)+(nyb(9)*1000)+(nyb(10)*100)+(nyb(11)*10)+nyb(12))*25.4/1000.0); //Serial.println((nyb(8)*10000)+(nyb(9)*1000)+(nyb(10)*100)+(nyb(11)*10)+nyb(12),DEC); I am not sure, but I think it has to do with the fact that there are 25.4 mm in an inch. Regards, Hennie — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#5>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGzc5VLXiUQ-Omq6K4_8We6KqBPLxsq0ks5rbtbBgaJpZM4L-cVI>.

-- *Rob Ward* Lake Tyers Beach, 3909 Lake Tyers Beach Website <http://www.laketyersbeach.net.au> Ubuntu Mate - A great OS <https://ubuntu-mate.org/> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#5 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AYhyVyHThWMBiHNoIhZKD0KMWYTNxy3eks5rbvO7gaJpZM4L-cVI>.