Recent content by ufans

Thanks for the help..    Here's the updated schematic with some changes. https://drive.google.com/file/d/0B6IG_VdMi3rlczhuM1NvNEFEN28/view?usp=sharing   Questions:  Q1) The 4.7K Ohm pull up resister; does that connect from DQ to OW Return Ground ?  Q2) Do I need to used Vsens+ and Vsens- ...

Here's an updated schematic: https://drive.google.com/uc?export=view&id=0B6IG_VdMi3rlWWM3Uk9lSk14R28     pH Meter is a Hach Pro Series P3.   http://www.hach.com/asset-get.download.jsa?id=7639982991   For the pH Meter, I am using the 4-wire connection so I have separate 24VDC power running to it...

Can someone help verify this circuit and/or suggest changes?   [sharedmedia=gallery:images:941]  

I've narrowed down my search for a security system, but need help confirming my setup to make sure everything is compatible and I have enough room to grow as the system expands.   Sensors: - (3) Zwave door sensors [56A00-1] - (2) Zwave motion sensors [47A00-2]   Additional Devices: - (4) Contact...