I'm looking for a relay board something like this
https://ebay.us/vSs9C5
I have a ttl signal (5v) from an Ethernet smoothstepper output from a cnc table.
I would like to use a 12vdc relay to switch 120vac.
The seller of this board says both the signal voltage and the relay coil voltage need to be the same. I'm wondering if that is really the case. I don't have enough electronic experience to know how it works.
I really want to control up to 8 relays if such a board exists, or I can use multiple separate boards. Not looking to spend a ton on this.
Can anybody give me a hand?
https://ebay.us/vSs9C5
I have a ttl signal (5v) from an Ethernet smoothstepper output from a cnc table.
I would like to use a 12vdc relay to switch 120vac.
The seller of this board says both the signal voltage and the relay coil voltage need to be the same. I'm wondering if that is really the case. I don't have enough electronic experience to know how it works.
I really want to control up to 8 relays if such a board exists, or I can use multiple separate boards. Not looking to spend a ton on this.
Can anybody give me a hand?