Homemade dispenser for everything (fertilizers, peroxide, algaecides)

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So the need for an auto dispenser has arrived. I'm tired of pouring 4 different solutions every morning.

As usual, the project will be cheap, simple and reliable. And of course it was assembled on Arduino.

The project is open, the source code is in the topic on our forum. When repeating a project, we kindly ask you to indicate the original source. And share your improvements in this topic. I will be very grateful!

I chose 4 independent channels for peristaltic pumps. Each can be configured for a specific response time and set how long the pump will operate in seconds. Using simple calculations, you can calculate the productivity of the pump ml/sec and, based on this, set the duration of operation. For example, to pour 30 ml of potassium, the pump must run for 28 seconds.

We will display everything on a 2004 display connected via an I2c bus.

Control of one encoder. The menu is cyclical, transition by turning the encoder. To change the value, you need to press the encoder and, without releasing it, turn it in the desired direction.

Added the function of applying fertilizers by day of the week!

For spare parts:

For installation you will need wires, connectors, breadboards for assembling drivers, and soldering supplies:

Homemade dispenser for everything (fertilizers, peroxide, algaecides)

Tekhi

— Yuri, I want to try to apply fertilizers using a dispenser. Do you think it is necessary?

Yu.V.

- Certainly. The dispenser is a good thing. Try it)) What's the problem?

Tekhi

— In the word “try”