They come in different configurations. Single relay, 2 relay, 4 relay and 8 relay boards. These relays are rated at 10 amp 250 volts. The price for them is really inexpensive too. The 8 relay board cost $11. The other boards were around $5 or under. Here is where you interface the eight relay board to the Arduino. It's very easy. And another cool thing is that most all the Arduino module boards have plenty of LEDs to let you know their states. As can be seen in this picture, there is a surface mount power LED and surface mount LEDs for each relay to indicate when they are activated.
www.mytwinturbo.com Nissan Data Voice - The first Nissan diagnostic software with a voice!
Download my Nissan 300ZX Vin/Model Lookup. Watch an ECZA meet caravan! |