I am about to embark on a new mini-project having the aim of implementing a button within my OpenHab2 sitemap for controlling remotely my NICE SpA ROBO 500 Sliding Gate Opener (RO500.Manual.pdf (917.6 KB))
I checked the user manual and I found the embedded ROA37 motherboard accepts a wired control input on pins 9 (Common = 24V AC) & 12 (Step-Step). No external voltage is needed to trigger the switch. I just need to short circuit the 2 pins for a few milliseconds to send a control command to the unit.
It is supposed to work as an input for sequential movement (Open -> Stop -> Close -> Stop etc).
I was originally thinking to:
a) Install a Raspberry Pi 3 in the gear motor cover (it fits) and link it to my WLAN
b) provide power to the RPi3 with the 2A official Raspberry power supply (I have 230V mains in the case),
c) connect the Raspberry GPIO to the control input of the motor motherboard,
d) configure something like gpio-admin to use a script to short circuit the control pins
e) configure a switch button in openhab2 with exec binding (maybe?) to call the script everytime I press the switch
simplified diagram below:
I have never done this kind of hardware setup before, so I need some opinions/advices please
Is it an overkill to use a Raspberry Pi 3 device to control the Gate?
Could I use something simpler (like ESP8266?)
My main OpenHab 2 instance will be running on a Linux Laptop on the same (W)LAN.
Any ideas are welcome
Ps: The Gate Opener accepts now remote control commands using the Nice INTI2B RF unit operating at 433,92Mhz… Could I leverage RF here?