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Digital I/O

The VM2 controller has 65 or more channels of digital I/O on board. Each of them can be pulled to either supply rail under software control.

Additional Digital inputs and outputs may be added to the basic VM2 using the versatile PCF8574 IC on the I2C Buses. You can fit up to 16 of these ICs to each bus, yielding nearly 300 Digital I/O in total. Full support is provided in Venom for all these Digital I/O, for example Make heater Digital($11,1) ;Heater control: channel $11, an output. Heater.On ;Turn it on Heater.Off ;Turn if off again See the Venom Manuals for more details.