![Image](http://arduino.cc/en/uploads/Main/ArduinoMega2560_R3_Fronte.jpg)
When using this board NodeMCU and ethernet shield or modules are not needed.
1 x TFT touch screen with resolution 400 x 240. (Optional)
1 X TFT shield (Optional)
1 x RTC DS3231 module without external EEPROM (Mandatory)
3 x Temperature sensor DS18B20 (Optional)
1 x Relay board (Optional)
![Image](http://ferduino.com/wp-content/uploads/2015/09/SSR-module-board-16-channels.jpg)
Prototype shield or screw shield (Optional)
Using this screw shield from Aqualed Light, RTC and TFT shield are not needed.
![Image](https://www.aqualed-light.com/wp-content/uploads/2018/09/Due_Mega_TFT_V4_001.jpg)
1 x Ethernet shield W5100, module or ESP8266 - WiFi module (Optional)
![Image](http://arduino.cc/en/uploads/Main/ArduinoEthernetShieldV3.jpg)
![Image](http://www.robotshop.com/media/files/images/w5100-ethernet-network-module-1-large.jpg)
6 x Float switch (Optional)
6 x Dosing pump (Optional)
Circuits pH, ORP and EC (Optional)
1 x Multiplexer (Optional)
1 x PCF8575 (Mandatory)
Warning: The red module with PCF8575C IC doesn't work properly with ULN transistors array. The correct IC to work with ULN is PCF8575TS
1 x SD card 1 or 2 GB fomatted as FAT (Mandatory)
When using WiFi module without a TFT a SD card module is needed.