Easydriver 4.2 output LEDS possible

Forum 2005-2010 (read only) Hardware Interfacing
1

I'm using a Freeduino 328 mega hooked up to a Easydriver 4.2 to drive a stepper. I'd like to monitor the outputs from the easydriver so I was wondering if I would be able to connect LEDS from the DIR and STP pins directly using 3mm 20mv LEDS?

Is this possible or will I downgrade the signal to the Freeduino or even blow something :slight_smile:

I'm new to electronics hence the stupid question :slight_smile:

Thanks in advance

2

using 3mm 20mv LEDS

I think you mean 20mA LEDs not millivolt.

If your drive will take it then fine. You need a series resistor in as well. I would choose one that limits the LED current to 10mA or less as that is often bright enough.
best of all is if you use a low power LED they typically work off 3mA and so need a higher resistor and have much less impact on the driver (arduino output pin)

3

Yes I meant 20mA LEDs :slight_smile:

Thanks for your reply.