For the NHD-7.0-HDMI-HR-RSXP-CTU Display, it states that it uses PWM to control the backlight brightness. Is there any example code for this for the Raspberry pi 4?
The frequency needs to be 5kHz – 100kHz, can this be achieved, or is it easier to use an Arduino, I preferable want to try and get it working with a rotary encoder.
I also found this on amazon. Would something like this also work?
And just so I understand, if the frequency is set to 5kHz then that's the dimmest the backlight will go, and increasing that to 100kHz would be maximum brightness?
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