Hi,
I'm wondering how to control switch on/off using RS-232. what i would like to control that 8 or 16 would be nice. do i need to make any expansion board ? or .. any cheapest way ? thanks in advance.
regards.
shetravel
Hi,
I'm wondering how to control switch on/off using RS-232. what i would like to control that 8 or 16 would be nice. do i need to make any expansion board ? or .. any cheapest way ? thanks in advance.
regards.
shetravel
Below is a serial controller board and some relay boards.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required