John – EnviroDIY

John replied to the topic Hyrdos 21 Gen2 – Can't Change Address in the forum Environmental Sensors 1 years, 6 months ago

Thanks, Shannon.

I did double check the things you mentioned. And as I said, this whole setup just worked when I did it with different gen 2 Hydros sensors in January. Still not having any luck.

Are there other things to try?

John started the topic Hyrdos 21 Gen2 – Can't Change Address in the forum Environmental Sensors 1 years, 6 months ago

I have some new METER Hydros 21 (gen 2) sensors and I want to hook them up to my Mayfly to calibrate them against some known standards before I deploy them. The problem is that the b_address_change sketch (https://envirodiy.github.io/Arduino-SDI-12/b_address_change_8ino-example.html#xample_b_page) can’t seem to determine what address the sensor…[Read more]

John replied to the topic Problems with a combined MH21 Gen1 and Gen2 station in the forum Mayfly Data Logger 2 years, 2 months ago

Ah! Some pieces are coming into clearer focus.

Thanks!

John replied to the topic Problems with a combined MH21 Gen1 and Gen2 station in the forum Mayfly Data Logger 2 years, 2 months ago

Thanks, Shannon. I think I get it. 🙂

Just out of curiosity, is this new? Or is it something that just became an issue because of trying to run the two different generations of sensor that way? It was working fine with the two Gen1 sensors written as it is. I suppose I’m trying to figure out if I just got lucky originally.

John started the topic Problems with a combined MH21 Gen1 and Gen2 station in the forum Mayfly Data Logger 2 years, 2 months ago

Hey all.

I have a station that started out with two Gen1 METER Hydros 21s and has transitioned to having one Gen1 and one Gen2. Unfortunately, I can’t seem to get the sketch to work now even though it was before. It compiles and uploads to the card, and the Gen1 sensor does just fine but I get -9999 from the Gen2 now that it’s installed. Whe…[Read more]

@johnmcdaris