criscecconello
New member
Hi all,
Today I using 10 Arduino Mega outputs (5V) to drive 10 4N25 with a 390 series resistor to drive the IR and works perfectly.
I intend to migrate to Teensy 4.1 with the same 10 outputs and same circuit, but I know the output voltage from Teensy is 3.3V, and in-circuit I will change the series resistor to 200 ohms, which maintains the 1.3V and 10mA in IR.
My question is: can I drive direct from Teensy to my 10 outputs or I will need another circuit because of Teensy current limit per pin?
Thanks
Cristian
Today I using 10 Arduino Mega outputs (5V) to drive 10 4N25 with a 390 series resistor to drive the IR and works perfectly.
I intend to migrate to Teensy 4.1 with the same 10 outputs and same circuit, but I know the output voltage from Teensy is 3.3V, and in-circuit I will change the series resistor to 200 ohms, which maintains the 1.3V and 10mA in IR.
My question is: can I drive direct from Teensy to my 10 outputs or I will need another circuit because of Teensy current limit per pin?
Thanks
Cristian