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@@ -16,6 +16,6 @@ That’s a large decrease from the 20 GPIO pins from the ESP32 boards used in th
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The L293D h-bridge chips in the old design take a lot of pins, if I used a motor driver chip with a serial interface, I could save pins for controlling servos.
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After looking at a few options I found the Trinamic TMC7300. https://www.analog.com/en/products/tmc7300.html
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Each driver can control 2 motors, and up to 4 drivers can be controlled from just two pins from the QT Py.
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This means the new design can control 8 servos and 8 motors. Because 8 bits is a byte and the boards are small and bite sized I named these boards RCM BYTE.
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This means the new design can control 8 motors and still have enough pins to also run 8 servos. Because 8 bits is a byte and the boards are small and bite sized I named these boards RCM BYTE.
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