Updated initialization of PCA9536 in setup#1
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Updated to set all channels to 0/off prior to setting channels to outputs. By default on power up all channels are set to high so after channels are set to outputs they turn on, setting channels low prior to setting to outputs prevents relays from turning on after set to outputs.
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Updated to set all channels to 0/off prior to setting channels to outputs. By default on power up all channels are set to high so after channels are set to outputs they turn on, setting channels low prior to setting to outputs prevents relays from turning on after set to outputs.