User Manual

serial interface, see Section 5.a. Note that the Maestro will probably be able to receive 3.3V TTL serial
bytes, but it is not guaranteed to read 3.3V as high on the RX pin, so you should boost 3.3V TTL serial
signals to above 4V if you want to ensure reliable operation.
The TX line transmits non-inverted TTL (0–5 V) serial bytes. These bytes can either be responses
to serial commands sent to the Maestro, or arbitrary bytes sent from the computer via the USB
connection.
The RST pin can be driven low to reset the Maestro’s microcontroller, but this should not be necessary
for typical applications. The line is internally pulled high, so it is safe to leave this pin unconnected.
Driving RST low is roughly equivalent to powering off the Maestro; it will not reset any of the
configuration parameters stored in non-volatile memory. To reset the configuration parameters, select
Device > Reset to default settings… in the Maestro Control Center.
Micro Maestro 6-channel USB servo controller
bottom view with quarter for size reference.
The dimensions of the Micro Maestro PCB are 1.2″ × 0.85″. The mounting holes have a diameter of
0.086″and are intended for #2 or M2 screws. The vertical and horizontal distances between the two
mounting holes are 0.65″ and 0.575″. The Micro Maestro weighs 3.0 g (0.11 oz) without header pins.
Pololu Maestro Servo Controller User’s Guide © 2001–2017 Pololu Corporation
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