EnviroDIY | Nikeaulas | Activity https://www.envirodiy.org/members/nikeaulas/activity/ Activity feed for Nikeaulas. Wed, 15 Apr 2026 23:57:29 -0400 https://buddypress.org/?v= en-US 30 hourly 2 d8a2470c738cdd73a1f18b775cdce344 Nikeaulas replied to the topic Campbell Scientific CS-215 SDI-12 communication issues w/ Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/campbell-scientific-cs-215-sdi-12-communication-issues-w-mayfly/#post-14548 Tue, 01 Sep 2020 09:07:51 -0400 I can confirm Sara’s idea to wait before the marking and not during seems to be more reliable, I had an issue where (rarely) the sensors did not answer to a measurement request, this seems to fixed this.

It is hard to be 100% sure about this since it doesn’t happen often but it seems to be better this way, and since it is also SDI-12 spec…[Read more]

]]> 1e4a0895c433ab2e23540b330e61bc33 Nikeaulas replied to the topic Campbell Scientific CS-215 SDI-12 communication issues w/ Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/campbell-scientific-cs-215-sdi-12-communication-issues-w-mayfly/#post-14358 Wed, 22 Jul 2020 13:38:54 -0400 I did not try to add it while at at “break level”. That is true, I missed this in the spec.

I’m guessing most (if not all) SDI-12 sensors wake up on a rising edge then start their timers from their. I think it will work all the same while respecting the SDI-12 spec.

I’ve actually got a few sensors now. As soon as I’ve got the hardware to drive…[Read more]

]]> 4c82156ca7a6f17d5c4c5101bf887a66 Nikeaulas replied to the topic Campbell Scientific CS-215 SDI-12 communication issues w/ Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/campbell-scientific-cs-215-sdi-12-communication-issues-w-mayfly/#post-14337 Thu, 16 Jul 2020 08:14:17 -0400 I left it at the “marking” level. Here is your typical CS215 SDI-12 frame with said modification to the lib. I think this is an ADDR request (I decoded it but can’t find my notes anymore).

 

 

]]> 204a77179c54c360ffbb08f7e356e28c Nikeaulas replied to the topic Campbell Scientific CS-215 SDI-12 communication issues w/ Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/campbell-scientific-cs-215-sdi-12-communication-issues-w-mayfly/#post-14103 Tue, 28 Apr 2020 09:16:48 -0400 Hi,

As it seems the Enviro lib still have the same problem with the CS215, I think I actually found a fix, so i wanted to share it with you guys.

I’ve updated the Arduino thread linked in the first post. But I’ll put the same explanation here:

The Enviro lib does not fully respect the SDI-12 protocol. There is one important timing aspect which…[Read more]

]]> 448376af5f787cee088db1f9cf5acab2 Nikeaulas became a registered member https://www.envirodiy.org/activity/p/5178/ Tue, 28 Apr 2020 09:13:08 -0400 0