Piston: Design Help

Scheduled Piston Not Executing (11)
Help with my first piston! (6)
Replacing wu weather commands with twc commands, getting "can't find variable" errors (16)
Invalid Device Variable - Smartthings multi function sensor (6)
IFTTT Post Ingredients - Date/Time Problem (10)
Tracking down semaphore problems (1)
Unlock on arrival with redundant presence sensors and door contact (17)
Sending TCP packets (5)
Parsing json from ComEd Hourly Pricing (8)
Presence and not presence triggers? (4)
Trying to Pass Device list between Pistons (2)
Can Edit Condition utilize a variable to represent a physical device On or Off State? (3)
Device Variables not showing custom functions (4)
Robust Architecture for entire house? (3)
Need help with SWITCH CASE and NULL (EMPTY) evaluation ( 2 ) (21)
Door Locks and User Codes ( 2 ) (33)
Ikea 5 button remote and light control (4)
Using Global Variables for Device Lists (2)
Font Awesome characters (3)
This Piston Should work - Right? (17)
Turning my pool pump off (10)
Test for Device Unavailable (9)
Excessive Piston Logging (4)
What is a piston state and how is it used? (9)
New ST app - set SHM mode (2)
There was a problem loading the dashboard data (8)
The function AddMinutes is not subtracting minutes from sunset (8)
Wake on Lan does not wake up device (9)
Voice Announcements and resume play but only if playing (4)
The real current ecobee temperature? (16)