# Cheap and versatile humidity regulator for environmentally controlled experiments

## TL;DR

This paper presents a low-cost, adaptable humidity regulator using an Arduino-based PID controller, enabling precise environmental control for various scientific experiments.

## Contribution

It introduces a simple, affordable design for a humidity regulator that can be customized for different experimental needs.

## Key findings

- The regulator effectively maintains desired humidity levels.
- The design is cost-effective and easy to implement.
- It provides a flexible basis for further customization.

## Abstract

The control of environmental conditions is crucial in many experimental work across scientific domains. In this technical note, we present how to realize a cheap humidity regulator based on a PID controller driven by an Arduino microcontroller. We argue our choices on the components and we show that the presented designs can serve as a basis to the reader for the realization of humidity regulators with specific requirements and experimental constraints.