Data Sheet

Stacking – double power – double outputs
[Fig. 23 – Arduino UNO + two stacked PSs to use 12 channels to get output power up to 1.5kW]
By stacking, you can expand output channels from 6 to 12 and also have FeedBacks from both
stacked boards. You can select which Arduino ports to use – PWM or non-PWM depending on
the Arduino board.
Only one Arduino controller is required to control both PSs, in any case. For this use
case, for each PS board you need to set different SW1 switch positions and then you will have
12 independent (separately controlled) channels. If both SW1s are in identical positions, the
outputs will be duplicated on both expansion boards; in other words, 6 Arduino digital outputs
will control 12 outputs (each Arduino output will control 2 PS outputs). Remember that SW1 also
switches feedbacks to analogue inputs.
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