Hello, Seth here again...
Okay. Here are the links to what I have currently in my possession. https://github.com/beagleboard/capes/tree/master/beaglebone/Relay ... https://shop.advanceautoparts.com/p/sylvania-3157-white-syl-led-mini-bulb-pack-of-2-3157slbp2/11137537-p?product_channel=local&store=8598&adtype=pla&product_channel=local&store_code=8598&gclid=Cj0KCQjwjoH0BRD6ARIsAEWO9Dto3PIICpZ7V7Q_cCqa8kLvBBYKnt9IQFolOQlDKFLqSOQ_VvFkS10aArABEALw_wcB&gclsrc=aw.ds Sorry for the long link. Seth P.S. As you can see on the LED, it is near impossible, w/out soldering, to connect wiring. And yes sir, I am using the RelayCape from GHI. On Sunday, March 29, 2020 at 9:57:18 PM UTC-5, Dennis Bieber wrote: > > On Sun, 29 Mar 2020 12:19:48 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user Mala Dies > <[email protected] <javascript:>> wrote: > > >Hello, > > > >I have a RelayCape from GHI and the bbb.io peoples. I think my issue is > my > >issue and I need assistance w/ it. > > A link to the source would help... Google shows lots of "relay > capes"... I'm going to assume it is the 4-relay unit shown on > https://beagleboard.org/capes > > > > > >So... > > > >I connect my 12v LED to the Cape like this: > > > > A link to the LED would be useful too... I'm going to presume you > mean > something like > https://www.amazon.com/12-Volt-LEDs-Internal-Resistor/dp/B00RRBPJ4M which > has an internal limiting resistor sized for a 12V supply. > > > > > - COMMON (COM) to 12v battery (positive) > > <ouch> > > Most circuits treat "COM" as GND level. Hopefully these relays are > fully isolated (a non-isolated relay would have the ground level shared > between the switched output and the low-side control input -- and if you > connected one of those with a high "com", you are putting 12V onto the BBB > ground side -- and maybe on the GPIOs which burn out at more than 3.3V) > > {You may be safe -- presuming I'm looking at the correct schematic, the > relays are isolated -- but FYI: the COM connection is described as > "RELAY#.COM.GND" > I'm also assuming the cape incorporates protection against back EMF going > into the BBB GPIO -- at the least, via a transistor switch maybe with > diodes; this protection will not be seen in diagrams using discrete > relays} > > > > - NORMALLY OPEN (NO) or NORMALLY CLOSED (NC) to the LED negative lead > > - Then...I put an additional wire to the negative lead on the LED to > the > > 12v battery (negative)/GND > > That makes no sense... > > Try: > > Battery + to LED + lead, > LED - lead to relay NC, > Relay COM to battery - > > The LED should glow (you don't need to have a BBB connected for > this -- > since the NC should make a complete circuit on the high voltage side). If > the LED doesn't glow, try swapping the leads on it. There is no sense in > worrying about the BBB until you get the LED on the NC connection to glow > all by itself. Only then can you worry about a program to make the BBB > toggle the relay state. > > > > > -- > Dennis L Bieber > > On Sunday, March 29, 2020 at 9:57:18 PM UTC-5, Dennis Bieber wrote: > > On Sun, 29 Mar 2020 12:19:48 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user Mala Dies > <[email protected] <javascript:>> wrote: > > >Hello, > > > >I have a RelayCape from GHI and the bbb.io peoples. I think my issue is > my > >issue and I need assistance w/ it. > > A link to the source would help... Google shows lots of "relay > capes"... I'm going to assume it is the 4-relay unit shown on > https://beagleboard.org/capes > > > > > >So... > > > >I connect my 12v LED to the Cape like this: > > > > A link to the LED would be useful too... I'm going to presume you > mean > something like > https://www.amazon.com/12-Volt-LEDs-Internal-Resistor/dp/B00RRBPJ4M which > has an internal limiting resistor sized for a 12V supply. > > > > > - COMMON (COM) to 12v battery (positive) > > <ouch> > > Most circuits treat "COM" as GND level. Hopefully these relays are > fully isolated (a non-isolated relay would have the ground level shared > between the switched output and the low-side control input -- and if you > connected one of those with a high "com", you are putting 12V onto the BBB > ground side -- and maybe on the GPIOs which burn out at more than 3.3V) > > {You may be safe -- presuming I'm looking at the correct schematic, the > relays are isolated -- but FYI: the COM connection is described as > "RELAY#.COM.GND" > I'm also assuming the cape incorporates protection against back EMF going > into the BBB GPIO -- at the least, via a transistor switch maybe with > diodes; this protection will not be seen in diagrams using discrete > relays} > > > > - NORMALLY OPEN (NO) or NORMALLY CLOSED (NC) to the LED negative lead > > - Then...I put an additional wire to the negative lead on the LED to > the > > 12v battery (negative)/GND > > That makes no sense... > > Try: > > Battery + to LED + lead, > LED - lead to relay NC, > Relay COM to battery - > > The LED should glow (you don't need to have a BBB connected for > this -- > since the NC should make a complete circuit on the high voltage side). If > the LED doesn't glow, try swapping the leads on it. There is no sense in > worrying about the BBB until you get the LED on the NC connection to glow > all by itself. Only then can you worry about a program to make the BBB > toggle the relay state. > > > > > -- > Dennis L Bieber > > On Sunday, March 29, 2020 at 9:57:18 PM UTC-5, Dennis Bieber wrote: > > On Sun, 29 Mar 2020 12:19:48 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user Mala Dies > <[email protected] <javascript:>> wrote: > > >Hello, > > > >I have a RelayCape from GHI and the bbb.io peoples. I think my issue is > my > >issue and I need assistance w/ it. > > A link to the source would help... Google shows lots of "relay > capes"... I'm going to assume it is the 4-relay unit shown on > https://beagleboard.org/capes > > > > > >So... > > > >I connect my 12v LED to the Cape like this: > > > > A link to the LED would be useful too... I'm going to presume you > mean > something like > https://www.amazon.com/12-Volt-LEDs-Internal-Resistor/dp/B00RRBPJ4M which > has an internal limiting resistor sized for a 12V supply. > > > > > - COMMON (COM) to 12v battery (positive) > > <ouch> > > Most circuits treat "COM" as GND level. Hopefully these relays are > fully isolated (a non-isolated relay would have the ground level shared > between the switched output and the low-side control input -- and if you > connected one of those with a high "com", you are putting 12V onto the BBB > ground side -- and maybe on the GPIOs which burn out at more than 3.3V) > > {You may be safe -- presuming I'm looking at the correct schematic, the > relays are isolated -- but FYI: the COM connection is described as > "RELAY#.COM.GND" > I'm also assuming the cape incorporates protection against back EMF going > into the BBB GPIO -- at the least, via a transistor switch maybe with > diodes; this protection will not be seen in diagrams using discrete > relays} > > > > - NORMALLY OPEN (NO) or NORMALLY CLOSED (NC) to the LED negative lead > > - Then...I put an additional wire to the negative lead on the LED to > the > > 12v battery (negative)/GND > > That makes no sense... > > Try: > > Battery + to LED + lead, > LED - lead to relay NC, > Relay COM to battery - > > The LED should glow (you don't need to have a BBB connected for > this -- > since the NC should make a complete circuit on the high voltage side). If > the LED doesn't glow, try swapping the leads on it. There is no sense in > worrying about the BBB until you get the LED on the NC connection to glow > all by itself. Only then can you worry about a program to make the BBB > toggle the relay state. > > > > > -- > Dennis L Bieber > > -- 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/c7a0f11e-6051-46d9-80da-6e6deae36774%40googlegroups.com.
