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Update for V2 PCB with V1 housing

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kennyboy55
2026-05-08 17:24:18 +02:00
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Components/Base_Module_V2.md
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# 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 SPI MOSI
6 IO6 SPI SCK
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 SDA > Buttons
25 IO48 I2C SCL > Buttons
26 IO45
27 IO0
28 IO35
29 IO36
30 IO37 SPI Register select
31 IO38
32 IO39
33 IO40
34 IO41
35 IO42
36 TXD0
37 RXD0
38 IO1 I2C SDA > Temperature Sensor
39 IO2 I2S SCL > Temperature Sensor
40 GND
```
## Connectors
### Connector J0
```
MCP I2C address: 0x20
PIN Description Destination
1 GND
2 +3.3V
3 Reset ESP32 #3 EN
4 I2C SDA 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 SDA 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 SDA 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 SDA 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
```