Hi everybody,
I want to design an 8x8 RGB Led array and it's corresponding controller. I did this schematic, but because the Leds and some components are surface mount, I cannot test it easily before sending it to a PCB manufacturer. My question is: do you see any errors or flaws in this circuit? To simplify, the schematic I show you is for a 4x4 array. As you can see, there is one PCA9634 per color (R, G, B), and each PCA9634 feed a row of four Leds simultaneously. The intensity of each Leds is controlled by PWM inside the PCA9634. The rows are activated one after the other by the CD4051 at a rate defined by the PIC18F4550 microcontroller.
If you have any comments or questions, I will gladly answer!
Thank you in advance and have a nice day,
Marc
I want to design an 8x8 RGB Led array and it's corresponding controller. I did this schematic, but because the Leds and some components are surface mount, I cannot test it easily before sending it to a PCB manufacturer. My question is: do you see any errors or flaws in this circuit? To simplify, the schematic I show you is for a 4x4 array. As you can see, there is one PCA9634 per color (R, G, B), and each PCA9634 feed a row of four Leds simultaneously. The intensity of each Leds is controlled by PWM inside the PCA9634. The rows are activated one after the other by the CD4051 at a rate defined by the PIC18F4550 microcontroller.
If you have any comments or questions, I will gladly answer!
Thank you in advance and have a nice day,
Marc
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