You cannot use that optocoupler and directly drive it with the beaglebone. the LED in that part needs 60ma to function correctly.
you would need to add a LED driver like what gerald has used to drive the LEDs on the beaglebone. you also need to calculate the correct current limiting resistor for 60ma @ 1.35v On 11/8/2016 7:39 AM, mzimmers wrote: > Hi, all - I thought I posted something about this last week, but a > search doesn't turn it up, so here goes again. > > I'm working through Molloy's book, and trying to build the > opto-coupler circuit in chapter 6. I'm not a hardware guy, so I'm > feeling my way along here. The diagram doesn't show specifically how > to wire up the four connectors. I looked at the data sheet for the > device, which was helpful, but still doesn't get me home. > > I could trial and error, but I've already fried one component, and > they're not easy to come by in my area. Can anyone help clarify this > configuration? > > This is the specific device: opto-coupler > <http://www.farnell.com/datasheets/2050347.pdf?_ga=1.151569401.1989118912.1477330330> > > 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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/cbd62af0-9a6d-4873-be79-ccd0a935d0b6%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/cbd62af0-9a6d-4873-be79-ccd0a935d0b6%40googlegroups.com?utm_medium=email&utm_source=footer>. > 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/f04ead10-96f8-b7d7-7e73-4568105bd00a%40gmail.com. For more options, visit https://groups.google.com/d/optout.
