I am driving a Sainsmart 4 Relay Module from MiniZed.
Because it needs 5 volts, I connected JD-VCC to 5v on Arduino Shield of MiniZed.
VCC is connected to 3.3v VCC of MiniZed.
Ground is connected to ground.
IN4 of Sainsmart is connected to an output of MiniZed.
The relay allows a connected module to have its VCC connected/disconnected on K4 of Sainsmart.
All seems to be working well, but I am wondering if 5v of relay could draw too much power. I did not see any specs for 5v on the MiniZed HW users guide.
An alternative would be using an external 5v power supply (breadboard power supply), but so far, the setup appears to work.
I plan on doing some testing of the setup, and I would not want to jeopardize my MiniZed.
Regards,
Todd Anderson
