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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.

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:

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
I	Attachment	History	Action	Size	Date	Who
png	S06bdc5e6bd54449dbd8baea3b48140b8n.png	r1	manage	1096.8 K	2024-02-21 - 16:49	UliRaich
pdf	SCH_ESP32-S3-Schematic_Diagram.pdf	r1	manage	728.3 K	2024-02-25 - 11:18	UliRaich
png	esp32-s3-fn8_pinout.png	r1	manage	740.5 K	2024-02-21 - 16:59	UliRaich

Topic revision: r3 - 2024-02-25 - UliRaich