Looking for a simple relay board for Arduino. Not shield. Needs to have 2 DPDT relays that can handle 5 amps DC @ 12v. Something that's simple. For some odd reason can't seem to find it.
Thanks in advance.
Well google found this easily for me: http://www.ebay.co.uk/itm/DPDT-Relay-Project-Self-Build-Kit-with-12VDC-Relay-for-Arduino-Raspberry-PI-/181790404266?_trksid=p2141725.m3641.l6368
A 4-relay board also might work.
Arduino can drive two (opto)relays with one output pin.
Leo..
Wawa:
A 4-relay board also might work.
Arduino can drive two (opto)relays with one output pin.
Leo..
Yeah - the common 4 relay module boards out there use 4 SPDT relays (10A contacts) - two SPDT relays can be wired in such a manner to act as an DPDT relay. There is only one caveat about this approach, vs a singular DPDT relay:
Because of the mechanical nature of relays, and the fact that the two SPDT relays making up the DPDT action will have different contact throw speeds - the contacts of one relay might close faster than the other. This needs to be observed and understood, especially if these relays will be carrying a lot of power. Without taking precautions to guard against it, you can cause a relay to fail quickly - possibly instantly!
A standard DPDT relay doesn't have this issue, as the relay contacts for both poles are on the same moving armature, and thus arrive or depart from making contact in a simultaneous manner.