ESP32 Forum

Hi there,

I am trying to replicate the ESP32-S3-DevKitC-1-N32R8V. I had some issues while looking at the schematic in this URL https://dl.espressif.com/dl/schematics/ ... 221130.pdf. I found that R7, R8, R9, R13, R17 and R24 does not have values. Are the values behind the symbols? If they are correct, Do they need to appear in the schematic? Why are they necessary or can I take them off? Others like R14, C13, C14, and C15 have been removed from the board but not from the schematic, only then have been named as NC. Should I have to take care of them?

Furthermore, I am using the ESP32-S3 soc chip but I need to add PSRAM and FLASH memories, I did not find any information on what chips are used in the ESP32-S3-DevKitC-1-N32R8V (information obtained: FLASH 32MB octal at 1.8V SPI PSRAM 8MB octal at 1.8V SPI). Also, I have tried looking for some information about which crystal I need to use but once again I did not have any information.

I found that R7, R8, R9, R13, R17 and R24 does not have values. Are the values behind the symbols? If they are correct, Do they need to appear in the schematic? Why are they necessary or can I take them off? Others like R14, C13, C14, and C15 have been removed from the board but not from the schematic, only then have been named as NC. Should I have to take care of them?

R7, R8, R9, R13, and R24 do have a value, namely 0 ohm. You can either keep them in your schematic like that (at times they can be useful for debugging because you can remove and reinstall a 0 ohm resistor, while hacking a trace is more involved) or replace them with a short. Components marked NC are not placed; you can leave them out if you want.

Hi,

Thak you for the info. If you have any additional information regarding the other question about FLASH, PSRSAM and Crystal, I would be very grateful.

I look forward to your reply.