Pin and connectors
Analog input (pins 34, 35, 36, 39)
Digital input (pins 27, 32)
Really on board 2 (pins 15, 12)
Buzzer pin (0)
ESP32 Reset default settings pin(2)
IR pin(3)
Serieal connector 4pin (+5v, 4, 25, GND)
Modbus Serieal connector 4pin (GND, 16, 17, +5V)
Display 1.3” 4pin (+3v, GND, 22_CL, 21_DA)
CRT connector 5pin (+3v, 21_D, 22_C, NC, GND)
GSM 6pin (RF, +4V, RS_33, RX_14, TX_13, GND)
Ethernet connectors 2x6pin (5, 18, 19, 23, 26)
Modules & components
ESP32 D1
![ESP32 D1](http://cpu.gr/wp-content/uploads/2021/09/ESP32-D1.jpg)
SIM800 GSM
![SIM800 GSM](http://cpu.gr/wp-content/uploads/2021/09/SIM800-GSM.jpg)
ETHERNET W5500
![ETHERNET W5500](http://cpu.gr/wp-content/uploads/2021/09/ETHERNET-W5500.jpg)
CRT
![CRT](http://cpu.gr/wp-content/uploads/2021/09/CRT.jpg)
DISPLAY OLED 1.3″
![DISPLAY OLED 1.3in](http://cpu.gr/wp-content/uploads/2021/09/DISPLAY-OLED-1.3in.jpg)
RS485 MODBUS
![RS485 MODUBUS](http://cpu.gr/wp-content/uploads/2021/09/RS485-MODUBUS.jpg)
RELAY 5V 5A
![REALY](http://cpu.gr/wp-content/uploads/2021/09/REALY.jpg)
EEPROM
![EEPROM](http://cpu.gr/wp-content/uploads/2021/09/EEPROM.jpg)
BUZZER
![BUZZER](http://cpu.gr/wp-content/uploads/2021/09/BUZZER.jpg)
CASE DIN RAIL
![case dinrail](http://cpu.gr/wp-content/uploads/2021/09/case-dinrail.jpg)
ESP 32 software
GENERAL
GSM
TRIGGER LINK
TIMERS
SENSORS
IR
MODBAS
IP
BUTTONS
CHARTS
APP