Piston: Design Help

Slow piston - mirroring light only when above percentage (2)
Checking a temperature probe is functional (6)
Power below level turn off (7)
Rain Sensor False alarm (8)
Underfloor Heating - will this work? (10)
Samsung Smartthings Cam (2)
Question on how the scheduler works (13)
Is a Ping Sensor possible? (11)
Echo Speaks Random SSML Response (16)
Piston not firing Echo Speaks after wait (6)
Echo Speaks does not speak (11)
Notifications with quick actions? (4)
Autolock Door w/ no contact sensor (9)
Trigger on erroneous door code (4)
Global variable to track state? (4)
Can we activate a scene in WebCoRE using new ST app? (8)
$twcweather is null (3)
Simple question from a newb: where is switch/case? (3)
Help a Newbie with some code : Motion & Lights (11)
Echo Speaks - Spotify url link not working (4)
Variable of devices gets This piston does not subscribe to any events (3)
Help simplifing a long yet repetitious piston - Part 2! (14)
Understanding $device, $devices, $currentEventDevice, etc ( 2 ) (21)
Can't change default/starting value of local variable (14)
Cant set a code in my lock (6)
Repeat until only fires 2 times (7)
Lights turning based on the lux level (14)
Lighting baed on lux value - correct settings help (3)
Where are the triggers? (5)
Wait 30sec before run piston again? ( 2 ) (29)