Comments (1)
edlins
commented on July 29, 2024
Hmmm, unfortunately I'm using the PCA9685 as a source to drive MOSFETs so I can't easily recreate current sink issues without building a new circuit. An unsigned int off value of 4096 should set the off low register to 0x00 and the off high register to 0x10 which is full off. You can enable _PCA9685_DEBUG mode to confirm the registers are getting these values. If the correct values are confirmed I would take a close look at your circuit design and see if there is any way current could be sinking elsewhere.
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