Hello Again, I will test this soon. I was just testing volts instead of resistance/continuity.
Seth P.S. Thank you for your insight and knowledge. Testing will ensue. On Monday, March 30, 2020 at 8:24:55 PM UTC-5, Dennis Bieber wrote: > > On Mon, 30 Mar 2020 16:15:53 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user Mala Dies > <[email protected] <javascript:>> wrote: > > > > >Hello Jon, > > > >Seth here. That is what I am thinking. I read over multiple tutorials and > >watched some videos on wiring NO, NC, and COM on a relay. > > > >... > > > >I stuck my meter in Relay1, Relay2, and Relay3 while running the source. > I > >was not receiving any difference in voltage when the source ran which > made > >my relay click and the onboard LED light up. > > What type of meter, and what mode was it in? > > The simplest test with a DVM (or, if anyone still has such, a VOM) > is > to set it in RESISTANCE mode, or CONTINUITY check mode (Continuity mode > typically has a beeper -- if a circuit is open, no sound, if a circuit is > closed, beeeeeeeeeeeeeep). > > Lock the black lead in the COM socket (it really doesn't matter > which > lead you put in COM, since all the voltage used comes from the meter > itself, but better to be safe should you want to test voltage later > [especially as an old VOM doesn't handle reversed voltage]). > > Touch the red lead to the NC socket. You should show near 0 ohms, > and > if you have a beeper, it should sound. > > Touch the red lead to the NO socket. It should show whatever the > meter > uses for "infinity", and no beeper should sound. > > Now, with the red lead in EITHER NC or NO, run some program to > trigger > the relay... The meter should switch to the opposite reading (if you were > in NC, it should go from 0.00/beeping to infinity/silent). > > Note that the relay does not provide its own voltage/current -- so > if > you were trying to measure voltage by connecting the probes to COM and > either NC or NO, you will only see 0.00V. In order to see a voltage, you > MUST have a battery in the circuit. > > B- to COM > meter "black" to NC (or NO) > meter "red" to B+ > > If using the NC, the meter should read the battery voltage, while > NO > reads 0.0V. Running a program to toggle the relay should result in NC > showing 0.0V and NO showing battery voltage. > > > -- > Dennis L Bieber > > On Monday, March 30, 2020 at 8:24:55 PM UTC-5, Dennis Bieber wrote: > > On Mon, 30 Mar 2020 16:15:53 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user Mala Dies > <[email protected] <javascript:>> wrote: > > > > >Hello Jon, > > > >Seth here. That is what I am thinking. I read over multiple tutorials and > >watched some videos on wiring NO, NC, and COM on a relay. > > > >... > > > >I stuck my meter in Relay1, Relay2, and Relay3 while running the source. > I > >was not receiving any difference in voltage when the source ran which > made > >my relay click and the onboard LED light up. > > What type of meter, and what mode was it in? > > The simplest test with a DVM (or, if anyone still has such, a VOM) > is > to set it in RESISTANCE mode, or CONTINUITY check mode (Continuity mode > typically has a beeper -- if a circuit is open, no sound, if a circuit is > closed, beeeeeeeeeeeeeep). > > Lock the black lead in the COM socket (it really doesn't matter > which > lead you put in COM, since all the voltage used comes from the meter > itself, but better to be safe should you want to test voltage later > [especially as an old VOM doesn't handle reversed voltage]). > > Touch the red lead to the NC socket. You should show near 0 ohms, > and > if you have a beeper, it should sound. > > Touch the red lead to the NO socket. It should show whatever the > meter > uses for "infinity", and no beeper should sound. > > Now, with the red lead in EITHER NC or NO, run some program to > trigger > the relay... The meter should switch to the opposite reading (if you were > in NC, it should go from 0.00/beeping to infinity/silent). > > Note that the relay does not provide its own voltage/current -- so > if > you were trying to measure voltage by connecting the probes to COM and > either NC or NO, you will only see 0.00V. In order to see a voltage, you > MUST have a battery in the circuit. > > B- to COM > meter "black" to NC (or NO) > meter "red" to B+ > > If using the NC, the meter should read the battery voltage, while > NO > reads 0.0V. Running a program to toggle the relay should result in NC > showing 0.0V and NO showing battery voltage. > > > -- > 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/128b4dcd-7638-4ccb-8626-e126c901c887%40googlegroups.com.
