Ten years ago, we started a project at the National Autonomous University of Mexico with the purpose of building custom-made operant conditioning chambers that could be used in research and laboratory courses. The focus was to reduce the cost and improve the flexibility of operant chambers by integrating advances in electronics and manufacturing processes such as 3D printing and laser-cutting technologies. With these technologies we designed and built customizable and reliable operant chambers for rats in which responses can be recorded using levers or photocells. Reinforcement is delivered precisely using a pellet or a water dispenser and auditory and visual stimuli are presented with buzzers and LEDs. An Arduino microcontroller board connected to a PC running programs written in Visual Basic controls and records experimental events. The origins and latest improvements of the project are described and instructions to build one operant chamber are provided. Additionally, we describe a few examples of modifications of the design with the purpose of researching a wider range of behavioral phenomena. The designs and programs are open-source and open-distribution so they can be downloaded for free and can be modified freely by users to adapt to numerous experimental settings.

十年前，我们在墨西哥国立自治大学启动了一个项目，目的是建造可用于研究和实验室课程的定制操作性调节室。重点是通过整合电子和制造工艺（如 3D 打印和激光切割技术）的进步来降低成本并提高操作室的灵活性。借助这些技术，我们为大鼠设计并建造了可定制且可靠的操作室，其中可以使用杠杆或光电管记录反应。使用颗粒或饮水机精确地提供强化，并通过蜂鸣器和 LED 呈现听觉和视觉刺激。一个 Arduino 微控制器板连接到运行用 Visual Basic 编写的程序的 PC 控制和记录实验事件。描述了该项目的起源和最新改进，并提供了建造一个操作室的说明。此外，我们描述了一些修改设计的示例，目的是研究更广泛的行为现象。这些设计和程序是开源和开放分发的，因此可以免费下载，用户可以自由修改以适应众多实验设置。