An aquarium can be made into a zero intervention required self sustaining ecosystem with some care and tech :)
To build Automatic Light and Pump system for an aquarium , of-course setup a manual system first .
I used 2 flood lights 50 W each and 1 6W 400 L/h cannister filter for a 2.5 m x 1 m x 1.5 m tank .
Although Arduino is capable of maintaining timer by itself , it will reset itself every-time electricity supply restarts which could lead to over feeding in the aquarium , hence an external RTC timer with its own separate power supply is ideal to maintain time for arduino device and associated system.
As a modification to automatic system , I have also added a manual override button which enables to me override automatic state and turn the light-pump system on or off manually anytime i want to. It does not affect the timer in any way and timer based system works smoothly as it is when manual over-ride is turned off .
- Gesto Metal 50 Watt 220-240V Waterproof Landscape IP65 Perfect Power LED Flood Light (White) x 2
- daisye88 External Canister Filter 6W 400 L/h Filtration System
- Arduino UNO
- DC adapter for Arduino
- RTC Timer + coin cell
- 2 pair male female plugs
- Switch button
- Empty mobile box
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Step 1: Assemble the Components
Use the Circuit diagram given to attach external power
Step 2: Add Manual Override Switch and Box Up the Assembly
Fit the assembly in a small size box such as old phone case .
Add a manual override switch button
Cut groves on the box for the wires to pass and reattach plug from outside as shows in image
Step 3: Video Before Box Assembly and After
Timings for Automatic lights and filter to switch on
- 7 am - 9:59 am
- 7 pm - 9:59 pm
Total 3+3 =6 hours a day