Description

This reference design provides a flexible stepper motor system designed to drive up to two stepper motors: or 8 peripherals: while reducing the number of GPIOs needed from the host controller reducing overall cost. The system is suitable for applications requiring stepper motors or coils up to 50V: and a max current of 2.5A (with all channels  enabled). This design features multiple configurations for outputs: allowing multiple peripherals to be driven (i.e. 1 motor: 1 buzzer: 1 relay: and 2 LEDs). It is adaptable to automated louver control in Heating Ventilation and Air Conditioning (HVAC) systems as well as control of relays: buzzers: and LEDs. This concept could also be more broadly expanded to drive any number of channels for other building automation designs including louver control in smart ventilation systems: automated window blind tilting: as well as pan and tilt control for IP cameras.