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The ESP32-S3-FN8 CPU board

This page shows the hardware connections of the onboard devices provided be the ESP32-S3-FN8 CPU board. First of all, this is an ESP32-S3 CPU with 8MB of PSRAM and 16MB of flash. Then it has

  • a user programmable LED
  • a neopixel
  • 2 switches
  • a MSM261S4030H I2S microphone
  • a OV2640 camera
  • SD card holder
This board therefore seems to be ideally suited to run the TinyML demos.

S06bdc5e6bd54449dbd8baea3b48140b8n.png

The circuit diagram can be found here:

https://afnog.iotworkshop.africa/pub/IoT_Course_English/ESP32-S3-FN8/SCH_ESP32-S3-Schematic_Diagram.pdf

and the pinout:

esp32-s3-fn8_pinout.png

The pin definitions for the LEDs and switches

  • LED 2: power LED
  • LED 1: user LED: GPIO 34
  • LED 3: NeoPixel: GPIO 33
  • SW 1: user switch: GPIO 38
  • SW 2: reset switch

The camera interface

Name on the circuit diagram driver parameter name GPIO number
PWDN GND -1
REST NC -1
XCLK xclk 10
SDA siod 21
SDC sioc 14
VS vsync 13
HS href 12
PCLK pclk 7
Y2 D0 5
Y3 D1 3
Y4 D2 2
Y5 D3 4
Y6 D4 6
Y7 D5 8
Y8 D6 9
Y9 D7 11

The SD card

Pin number of SD card holder Pin name on SD card holder SPI name GPIO number
1 DAT3/CS SS (CS) 38
2 CMD/DI MOSI 39
3 VSS1 GND  
4 VDD 3.3V  
5 CLK/SCL CLK 42
6 VSS2 GND  
7 DAT0/DI MISO 41
8 DAT1/IRQ   40
9 DAT2/NC   37

The MSM261S4030H0R I2S MEMS microphone

Name on the circuit diagram driver parameter name GPIO number
WS ws 37
SCK bck 36
SD sdin 35

-- Uli Raich - 2024-02-21

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Topic attachments
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PNGpng S06bdc5e6bd54449dbd8baea3b48140b8n.png r1 manage 1096.8 K 2024-02-21 - 16:49 UliRaich  
PDFpdf SCH_ESP32-S3-Schematic_Diagram.pdf r1 manage 728.3 K 2024-02-25 - 11:18 UliRaich  
PNGpng esp32-s3-fn8_pinout.png r1 manage 740.5 K 2024-02-21 - 16:59 UliRaich  
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Topic revision: r3 - 2024-02-25 - UliRaich
 
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