# Base module

## Controller
Brand: Espressif
Type: ESP32-S3-WROOM-1
Driver IC: ST7735S (ESPHome compatible)

[Datasheet](../Datasheets/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf)

### Pinout / IO

```
1	GND		
2	3.3V	
3	EN		
4	IO4		Neopixel LED's
5	IO5		
6	IO6		
7	IO7		
8	IO15	
9	IO16	
10	IO17	
11	IO18	
12	IO8		
13	IO19	
14	IO20	
15	IO3		Backlight main display
16	IO46	Backlight mini displays
17	IO9		
18	IO10	
19	IO11	
20	IO12	
21	IO13	
22	IO14	
23	IO21	
24	IO47	I2C SI
25	IO48	I2C SCL
26	IO45	
27	IO0		
28	IO35	SPI MOSI
29	IO36	SPI SCK
30	IO37	SPI Register select
31	IO38	
32	IO39	
33	IO40	
34	IO41	
35	IO42	
36	TXD0	
37	RXD0	
38	IO1		
39	IO2		
40	GND		
```

## Connectors

### Connector J0

```
MCP I2C address: 0x20

PIN		Description						Destination
1		GND
	2	+3.3V
3		Reset							ESP32 #3 EN
	4	I2C SI							ESP32 #24 IO47
5		SPI MOSI						ESP32 #28 IO35
	6	I2C SCK							ESP32 #25 IO48
7		SPI SCK							ESP32 #29 IO36
	8	I2C Address MSP A0				GND
9		SPI Register select				ESP32 #30 IO37
	10	I2C Address MSP A1				GND
11		Mini Display Backlight anode	ESP32 #16 IO46 (via transistor)
	12	I2C Address MSP A2				GND
13		Extensionplate...
	14	Connected with J1,2,3
15		Main Display Backlight anode	ESP32 #15 IO3 (via transistor)
	16	Neopixel Data OUT				J1 #17
17		Neopixel Data IN				ESP32 #4 IO4
```

### Connector J1

```
MCP I2C address: 0x21

PIN		Description						Destination
1		GND
	2	+3.3V
3		Reset							ESP32 #3 EN
	4	I2C SI							ESP32 #24 IO47
5		SPI MOSI						ESP32 #28 IO35
	6	I2C SCK							ESP32 #25 IO48
7		SPI SCK							ESP32 #29 IO36
	8	I2C Address MSP A0				3.3V
9		SPI Register select				ESP32 #30 IO37
	10	I2C Address MSP A1				GND
11		Mini Display Backlight anode	ESP32 #16 IO46 (via transistor)
	12	I2C Address MSP A2				GND
13		Extensionplate...
	14	Connected with J0,2,3
15		Main Display Backlight anode	ESP32 #15 IO3 (via transistor)
	16	Neopixel Data OUT				J2 #17
17		Neopixel Data IN				J0 #16
```

### Connector J2

```
MCP I2C address: 0x22

PIN		Description						Destination
1		GND
	2	+3.3V
3		Reset							ESP32 #3 EN
	4	I2C SI							ESP32 #24 IO47
5		SPI MOSI						ESP32 #28 IO35
	6	I2C SCK							ESP32 #25 IO48
7		SPI SCK							ESP32 #29 IO36
	8	I2C Address MSP A0				GND
9		SPI Register select				ESP32 #30 IO37
	10	I2C Address MSP A1				3.3V
11		Mini Display Backlight anode	ESP32 #16 IO46 (via transistor)
	12	I2C Address MSP A2				GND
13		Extensionplate...
	14	Connected with J0,1,3
15		Main Display Backlight anode	ESP32 #15 IO3 (via transistor)
	16	Neopixel Data OUT				J3 #17
17		Neopixel Data IN				J1 #16
```

### Connector J3

```
MCP I2C address: 0x23

PIN		Description						Destination
1		GND
	2	+3.3V
3		Reset							ESP32 #3 EN
	4	I2C SI							ESP32 #24 IO47
5		SPI MOSI						ESP32 #28 IO35
	6	I2C SCK							ESP32 #25 IO48
7		SPI SCL							ESP32 #29 IO36
	8	I2C Address MSP A0				3.3V
9		SPI Register select				ESP32 #30 IO37
	10	I2C Address MSP A1				3.3V
11		Mini Display Backlight anode	ESP32 #16 IO46 (via transistor)
	12	I2C Address MSP A2				GND
13		Extensionplate...
	14	Connected with J0,1,2
15		Main Display Backlight anode	ESP32 #15 IO3 (via transistor)
	16	Neopixel Data OUT				Extensionplate #5
17		Neopixel Data IN				J2 #16
```
