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 Roganti's Robotics Zone
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The Servo Expander Port requires a serial bit stream containing the servo timing pulses. This circuit will parse the timing pulses to the individual servo ports. The control timing mentioned in the schematic is required for proper operation. A total of 9 servo ports is available now. I'm using only 8 ports currently and you can program whatever number of ports by programming the reset pulse after the last PWM pulse you need.

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