/technologies/internet-of-things/b/blog/posts/old-meets-new-the-1-wire-weather-station-on-the-spark-core-part-7Its already some time ago that I wrote my previous post in this series ( Old meets new, the 1-Wire Weather Station on the SPARK Core. (part 6) ).In the meantime I did a lot of tests using the solar pannel and different types of batteries and dischargeen-USTelligent Community 12https://community.element14.com/technologies/internet-of-things/b/blog/posts/old-meets-new-the-1-wire-weather-station-on-the-spark-core-part-7Sun, 23 Jul 2023 16:17:07 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:ff0baac5-2d6a-47a9-9030-1fd5fe25d853Mustang650<p>Hi Gerrit, I know that this project was done years ago, but I just located it as I just found my Dallas 1wire Weather Station hiding in a box, without any of my original documentation. So I have the unit apart and looking at the circuit board I am trying to figure out which pins are which on the RJ11 connector. With the tab of the on the top looking into the opening side, and pin #1 is on the right, it looks like data is on pin #3 and pin #4 is ground. Also, it looks like pin #5&#39;s only function is to jumper between the pin #5 of each of the connectors as there is no other connection on them as I can see. I went through all your 7 write ups but was not able to locate the pin out for the RJ11. I do not want to fry the chips on the circuit board. Any assistance would be a great help. Oh, I decided to use a Pico W&nbsp; opposed to using the Arduino or the ESP32. I will be making the PicoW a Stand alone AP and it will also send the data to a file on a Raspberry Pi in the house. I also have the Dallas 1 wire rain gauge also to connect. I live in Florida and I hope to get the unit mounted and the hardware/software up and running FAST as we are in Hurricane season now. Thank you in advance for any assistance you can give me. Don</p><img src="https://community.element14.com/aggbug?PostID=20802&AppID=27&AppType=Weblog&ContentType=0" width="1" height="1">