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Clarification on how PWM signals are generated on DB21M #71

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nicholas-gs opened this issue Aug 25, 2022 · 1 comment
Open

Clarification on how PWM signals are generated on DB21M #71

nicholas-gs opened this issue Aug 25, 2022 · 1 comment
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@nicholas-gs
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nicholas-gs commented Aug 25, 2022

Would like to clarify how the PWM signals are generated for the 5 LEDs and the 2 motors on the DB21M? Looking at the led_emitter, wheels_driver, adafruit_drivers and hat_driver packages inside this repository, it seems that all 5 LEDs and both motors PWM signals are generated by a single PCA9685 at address 0x40 and bus 1? (Based on this line).

Is the PCA9685 built into the DTHUT v3.1? Because when I do a i2c detect -y -r 1 with the other peripherals detached (front bumper, imu, led screen etc..), I do not see any devices connected.

@liampaull
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maybe @kghite knows?

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