http://www.wlelectronix.com/Content/Images/uploaded/Relay%208%20Way_2.png My relay module is must be something like this. Relays are 5v, so i use VDD_5V(P9_05) to drive them. GPIO turns on and off them in normal. But there is a problem in my situation. I'm trying to find it.
7 Temmuz 2014 Pazartesi 15:58:52 UTC+3 tarihinde Gerald yazdı: > > 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, <[email protected] <javascript:>> 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 [email protected] <javascript:>. >> 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.
