8 Channel Relay Module - Raspberry Pi Forums

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i believe i've managed working i've got couple of questions

i've followed code site below.
http://www.susa.net/wordpress/2012/06/r ... sing-gpio/

question 1. why light go on when signal low?
question 2. if low mean lamp turn on?

image

raspberrypibeginners wrote:i believe i've managed working i've got couple of questions

i've followed code site below.
http://www.susa.net/wordpress/2012/06/r ... sing-gpio/

question 1. why light go on when signal low?
question 2. if low mean lamp turn on?

image
can't readilly tell, have wired closed relay contacts rather open one?

-gordon


raspberrypi



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