im looking for something thats either usb or db9 that i can use a program on the computer to control relays or a series of relays to get 12vdc or 120vac controls.
Basically i want to use the software to either manually turn relays off or on or have an option to do this automatically like a PLC.
ive seen some kits at "The Shack" and really have no clue exactly what they were for but got me wondering if there was something like i need.
im more or less a beginer in electronics , but have built a kit or 2 over the years so building one wouldnt be much of a problem if i had to go that route
Basically i want to use the software to either manually turn relays off or on or have an option to do this automatically like a PLC.
ive seen some kits at "The Shack" and really have no clue exactly what they were for but got me wondering if there was something like i need.
im more or less a beginer in electronics , but have built a kit or 2 over the years so building one wouldnt be much of a problem if i had to go that route