[werk_ag]

Yes, I'll upload some pics tomorrow, it's time for bed.

I know you are 10 hours ahead of me.
I wish you a good sleeping night.

From that link, tomorrow I'm try the capacitor trick.

The capacitor trick did not work in any Arduino Nano that I have tested. But who knows it works in yours...

[meteoestarreja]

This is from Playground.arduino.cc, it works!

DisablingAutoResetOnSerialConnection

So you have found need for disabling the auto reset? So that the arduino does not reset when establishing a connection. Here are some solutions.

Note: This does NOT apply to the new Arduino Leonardo that uses USB and serial differently. The Leonardo does not auto-reset, however, it is difficult to make Leonardo reset even if desired. See the bottom of this page for Leonardo-specific issues with reset.

The simple way that doesn't require any permanent modifying of your hardware or software configuration changes:

Stick a 120 ohm resistor in the headers between 5v and reset (you can find these on the isp connector too). 120 is hard to find so just combine resistors. Don't go below 110 ohms or above 124 ohms, and don't do this with an isp programmer attached. You can just pull out the resistor when you want auto-reset back.

From that link, tomorrow I'm try the capacitor trick.

Thanks for your replies Werk_AG!
I'll report back with my findings tomorrow after work

Hi guys,
I tried this on my unit and the procedure with the resistor worked.
Since I didn't had an 120R, I couple 3 to obtain that value and even being a little outside of "range" (127R) it worked.
Best regards

[uncle_bob]

It must be related to my PC or driver then. I'll try it on my server some time this weekend.

[meteoestarreja]

It must be related to my PC or driver then. I'll try it on my server some time this weekend.

Hi Bob,
personally I don't think that the problem is related to any driver concern. With the computer is a possibility if the supplied voltage from usb port is lower than 5V. It may be the case that the resistor have a greater value than the required to that particular voltage.
I don't know if that's the case, just a thought.

[uncle_bob]

Hi Werk_Ag and meteoestarreja,
I resolved the issue by inserting the 1uF electro cap as in the 1st example of the picture linked to earlier..

[werk_ag]

It's good to know that there is at least one more solution.
Did not know this one, with capacitor and resistor. The one I tested and did not work, was only with the capacitor.

Tonight I will try this solution.

Did you ever try replacing the 120R resistor, by one of around 112R?

[uncle_bob]

Did you ever try replacing the 120R resistor, by one of around 112R?

Umm, no I didn't sorry. But swapping resistor value was next on my list to try.

[uncle_bob]

Here's a comparison of of the two stations. Pretty good I reckon

[werk_ag]

Hi, uncle_bob

So far we have talked a lot of hardware and software, but now we get to the main point of all this: Measuring atmospheric data

I am very happy with these pictures and once again a big thank you for the dedication and time expended to get these comparative graphics.
As with any weather station, the accuracy of the data depends mainly on the quality of the measuring instruments used. From my experience, the DHT22 is pretty good in temperature measurement, a little less in moisture.

If you have more comparative data, I would like to see them.

The lines on the graph are quite soft which indicates to me that the transmission system is also working well.

[uncle_bob]

I am very happy with these pictures and once again a big thank you for the dedication and time expended to get these comparative graphics.

You're most welcome Werk_AG. Really it's me that should be doing the thanking for making this project available to me and everyone else.

If you have more comparative data, I would like to see them.

Sure, I'll post up more later.

The lines on the graph are quite soft which indicates to me that the transmission system is also working well.

It, to me, looks like the WeatherDuino is doing a better job without spikes.

In other good news, the supplier of my WS3081 is sending out some new cups for my anemometer, free of charge so I will soon start sending wind data again!