The Pilots native internal voltage is 3.3 volts (hence 3V3) and bidirectional serial communications are available at this level. 3V3 communications use zero volts and 3V3 volts to transmit and receive the serial data. A bit ‘1’ is represented by a high (3V3) level and a ‘0’ by a low (zero volt) level. This is standard for inter-processor communications but is the opposite polarity to that of RS-232.

There is NO PROTECTION on these lines, they are wired directly to the processor. Noise or overvoltage on these lines will destroy the Pilot™ device. It is highly recommended that these lines are only attached to another local 3V3 microprocessor-based device. There is absolutely no warranty available when connecting to the device in this way. For further details, please contact us.