im tryin a little home automation in my downtime but im havin a problem with a motor for my blinds
i using a 12 channel relay controller **broken link removed** same as that one there
im using channel one for down channel 2 for up
i have them both wired to the same power supply a 12 v battery at the moment
but when i power the unit up the wires heat up and fry
i have tried everything i can think off even using a diode to stop the current flowing wrong way in to the bat but that also super heats
**broken link removed** a simple diagram if it helps
1 ) Seems like you´re doing a short-circuit when switches A-B to ON state.
2 ) How can motor be supplyed, if POS and NEG terminals are connected toghether ?
i do see what u mean but the channels are part of a rf controllers your diagram the motor would only recive power when both relays on both channels where on
each pole on the motor has a pos and neg lead connected to it so channel one makes the motor spin clockwise channel 2 anti clockwise so that is the reason for the poles been lik that ..if i run 2 power supplies it works fine
with that set up the motor would spin all the time clockwise as both ar connected to always open always closed so there isnt a off part and with each only havin just possitive to common and negative to the other common i dont even think they would power up .. but i will wire it up and see as i aint tried that
configuration yet