So I have a solid-state relay I'm looking to control with a Teensy 3.2. Here's the datasheet:
http://www.farnell.com/datasheets/3157355.pdf
I chose it specifically because it can be triggered w/ 3V. However it's unclear from the datasheet if I need to use a resistor (to avoid blowing the LED). Google searches produced conflicting general info... some say definitely yes, others say that most SSRs you do not need a resistor.
Thoughts? And if a resistor is needed, recommended value?
http://www.farnell.com/datasheets/3157355.pdf
I chose it specifically because it can be triggered w/ 3V. However it's unclear from the datasheet if I need to use a resistor (to avoid blowing the LED). Google searches produced conflicting general info... some say definitely yes, others say that most SSRs you do not need a resistor.
Thoughts? And if a resistor is needed, recommended value?