I have just received a 8 Channel relay pcb bought on ebay for just 8£ (http://tinyurl.com/7sjtbw8
), but I am not too sure how to connect it up with arduino. I have used relays before but i just want to be sure not to blow anything so.. would anyone give me a hand with this?
The 10 pins on one side are numbered 1-8 (arduino pins i guess) and a gnd and a vcc (how much power would this need?)
I need to connect various radios to power them on and off (via software). They are both dc powered (9, 12 volts), both mains ac (220).
Every advice would be very welcome! Thanks a lot!