I am trying to build a plant moisture meter and the curcuit can be found at this link.
https://www.free-electronic-circuits.com/circuits/plant-moisture-meter.html
I have a few questions regarding this curcuit
1) It says "adjust R5 for a mid-scale meter deflection". Where is the resistor R5 located?
2) What is the M1 that connects to earth stand for?
Any help given will be much appreciated.
I also want to know how to integrate an electronic PH meter to this curcuit? Could any forum members please offer me some help?
Could you email if possible all suggestions to mal_chand@yahoo.com
Once again any help given will be much appreciated.
https://www.free-electronic-circuits.com/circuits/plant-moisture-meter.html
I have a few questions regarding this curcuit
1) It says "adjust R5 for a mid-scale meter deflection". Where is the resistor R5 located?
2) What is the M1 that connects to earth stand for?
Any help given will be much appreciated.
I also want to know how to integrate an electronic PH meter to this curcuit? Could any forum members please offer me some help?
Could you email if possible all suggestions to mal_chand@yahoo.com
Once again any help given will be much appreciated.