Hi;
I took a look at both circuits. There’s uses an opto-isolator, so shorting the LED should work. In your case, the 1K resistor on the base will load the GPIO too much. I used a 10K base resistor with a 100K pull down. Basically multiply both of your values by 10 and you8 should be fine. I would hook the LED in parallel with the relay coil. Good Luck Bill From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, February 09, 2015 8:57 AM To: [email protected] Subject: [beagleboard] Control 5V relay with my BeagleBone Black GPIO Hi, I have a 5V Relay shield to control with my BBB, i know the GPIO work with 3.3V, i see an instructable that i can shunt the leds in my relay shield and it will work, it is safe for my bbb to do that? Modifications for Driving a 5V relay module from a 3.3V Arduino board <http://www.instructables.com/id/Home-Automation-How-to-Add-Relays-to-Arduino/step6/Modifications-for-Driving-a-5V-relay-module-from-a/> My relay board: Relay Board <http://wiki.iteadstudio.com/4_Channels_5V_Relay_Module> Thanks, -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
