I can't tell much from a picture. Doe sit have a schematic, or a link to one?
If the relays are 5V, then you cannot drive them from a GPIO as it is 3.3V and delivers only about 6mA.. Connecting 5V will blow the processor. You would need a level shifter such as a transistor to drive the relay.. Gerald On Mon, Jul 7, 2014 at 7:37 AM, <coloneedes...@gmail.com> wrote: > Hello, > I'm trying to use relay module with beaglebone black. > I bought relay module from china. > It is very similar to this: > http://www.hobbyist.co.nz/sites/default/files/8ChannelRelay_small%20%28Custom%29.jpg > I have connected VCC to BBB's VDD_5V(P9_05) and GND to BBB's DGNG(P9_01). > Here is the problem: > When I connect any gpio port to relay module's any signal pin, relay is > starting to work. > Even GPIO is high or low I can't switch off the relay. So I can't control > any relay from BBB. > What can I do to solve this problem? > Many thanks. > Note: I tried relay module with external power source but results are same. > > -- > 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 beagleboard+unsubscr...@googlegroups.com. > 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
