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.
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