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

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