For the geeks, maybe some can use it. Cheap SQ-521 sensor (only) SDI-12 protocol

[oreo54]

At $50 and microprocessor controlled par sensor maybe someone can use it..
https://www.ebay.com/itm/3259617212...LNevKlGCw5CglqYPirLgO5LiGFYcFfJBoCbhYQAvD_BwE

https://www.apogeeinstruments.com/content/SQ-521-manual.pdf

http://www.sdi-12.org/current_specification/SDI-12%20Specification%201.4%20February%2020%202023.pdf

Worst part is probably getting/making the cable.
Pics show the nylon screw. Apparently needed to avoid galvanic corrosion of aluminum threads.

Anyways "as is" I guess..

 

[oreo54]

At $50 and microprocessor controlled par sensor maybe someone can use it..
https://www.ebay.com/itm/3259617212...LNevKlGCw5CglqYPirLgO5LiGFYcFfJBoCbhYQAvD_BwE

https://www.apogeeinstruments.com/content/SQ-521-manual.pdf

http://www.sdi-12.org/current_specification/SDI-12%20Specification%201.4%20February%2020%202023.pdf

Worst part is probably getting/making the cable.
Pics show the nylon screw. Apparently needed to avoid galvanic corrosion of aluminum threads.

Anyways "as is" I guess..

More tinker for the toy...

SDI-12 Interface | RAK13010

RAK13010 is an SDI-12 Serial Digital Interface with a speed of 1200 baud. It uses a 3-wire SDI-12 communication connection. sdi-12 protocol Arduino

store.rakwireless.com

AC-421 SDI-12 to USB Converter

Apogee Instruments manufactures instrumentation to measure radiation and temperature for plant growth and more.

www.apogeeinstruments.com

 

[Ranjib]

Very interesting, thank you for sharing