I'm building a new 100 Gal Reef tank. I love DIY and used to be a programmer so this project really interests me. Also I have an old Arduino Mega sitting around needing something to be.
Problem I'm starting with is finding parts that can be shipped to me because I live in a remote area and there's nothing that sells these types of electronics here. One vendor that is easy and cheap for me to buy from is Aliexpress so I was wondering if these parts would work?
#1: I've got an old Sainsmart Arduino Mega that I was going to use: https://www.sainsmart.com/products/mega ... compatible
#2: I was going to skip having a TFT and just go WiFi for the interface since it's working. https://www.aliexpress.com/item/V2-4M-4 ... 90484.html
#3 IO Expander: https://www.aliexpress.com/item/PCF8575 ... 86560.html
#4 Multiplexer: https://www.aliexpress.com/item/Free-sh ... 52378.html
#5 pH Probe and Circuit: https://www.aliexpress.com/item/1Set-Li ... 78131.html
#6 Float Switches: https://www.aliexpress.com/item/5Pcs-Wa ... 04354.html
#7 Temp Probe: https://www.aliexpress.com/item/Free-sh ... 11989.html
#8 Dosing Pumps: https://www.aliexpress.com/item/1Pcs-6V ... 01696.html
I've also got 2 Solid State Relays and 8 Electromechanical relays for power strip control, but these should be fine. Also I'll be using an old computer power supply to run everything.
Is there any parts on this list that would not be compatible with the Ferduino? Just want to ask the experts before buying