Dumbwaiter for a friend 20-21

Dumb Waiter Shaft Looking Down From Third Floor
Looking down elevator shaft from third floor
Dumb Waiter Shaft Looking Up From Second Floor
Looking up elevator shaft from ground floor
Programmable Logic Controller - Parts
Parts n Pieces
Programmable Logic Controller - Snapped Onto DIN Rail
Bare PLC and Power Supply
Programmable Logic Controller - Internal
Inside J-Box Programmed and Wired

This 19:31 operational audio/video is dry with specs for even the heartiest of automation folks, so just skip to 5:28 if you are not please.

2000 Dumb Waiter

19:30

This is not a proof of concept software simulation, or anything of that sort. This is a wired production demonstration. The PLC requires exactly 23 input/output wires to function. I have been around companies with small lengths of new scrap 50-conductor control cable for decades.