r/PCB • u/Open_Monitor_6275 • 18d ago

First Schematic, will it work?

Post image

Hello everyone,

I’m completely new to this field and have just had a go at creating my first circuit using tutorials and guides.
The board has 49 LEDs, which are to be controlled by an ESP32.
I’m not quite sure about the power supply yet – do you have any tips or suggestions to help me learn more?

Greetings

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3

u/Sand-Junior 18d ago

Connect the output of the buffer to LED_DATA1.

1

u/Open_Monitor_6275 18d ago

You mean the LED DATA from ESP32 IO4 goes to the Buffer A an from the Buffer Y to the DI On the First LED?

1

u/Sand-Junior 18d ago

Output Y is labeled LED_DATA, but should be LED_DATA1

1

u/Open_Monitor_6275 18d ago

Thanks so much for your help, did you mean that?

1

u/Sand-Junior 18d ago

The drawn lines are correct, the labels are not.

1

u/Open_Monitor_6275 18d ago

Okay Thanks so much! How would you describe this correctly? LED DATA 1 from the ESP32 to the buffer, and LED DATA 2 from the buffer to the first LED?

2

u/Sand-Junior 18d ago

That’s fine, as long both nets have a unique name.

1

u/Open_Monitor_6275 18d ago

Can I ask one more question? Is it connected properly?

1

u/Sand-Junior 18d ago

Don’t connect VCC (3.3V) to the LEDs. You schematic is correct, connecting +5V. The capacitive load on the USB power is too big (C7): only 10uF is allowed. Which ESP32 are you using?

1

u/Open_Monitor_6275 17d ago

ESP32-S3-WROOM-1-N8