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Compact open-hardware I/O system with 4 analog inputs, 4 digital inputs, 4 analog outputs, and 4 relay outputs for industrial automation and Arduino.

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Arduino controlled compact modular I/O module

Moltino 4x4 renaissance

MOLTINO is a versatile family of modular input/output (I/O) devices designed for measurement, control, and monitoring in industrial, academic, and development environments. It is a documented hardware platform with publicly available schematics to support firmware creation and system integration. Users are encouraged to develop their own firmware and applications tailored to specific use cases. The system is compatible with a wide range of Arduino Uno form factor controllers, including AVR, STM32, ESP32, RP2040, among others, offering flexibility and scalability for different performance needs. These platforms also enable the integration of additional features such as wireless communication (Wi-Fi, Bluetooth), real-time clock (RTC), external storage, or advanced processing capabilities, significantly expanding the development possibilities depending on the project.
MOLTINO is committed to fostering openness and collaboration while ensuring commercial viability and product reliability.


Main features MOLTINO 4x4 renaissance:

  • 4 0-10V/0-20mA analog inputs (16bit resolution)
  • 4 multifunction smart digital inputs
  • 4 0-10V/300mA analog outputs
  • 4 relay outputs
  • Logic compatible with 5V and 3.3V
  • Integrated power supply
  • Integrated RS485 communication
  • Optional LCD screen
  • Modular design
  • Maximum protection


Flexible firmware development:

MOLTINO allows anyone to develop their own firmware tailored to specific needs. Thanks to its compatibility with standard Arduino Uno form factor boards, developers can easily use a wide range of controllers available on the market — including AVR, STM32, ESP32, and RP2040 — to create powerful and customized solutions.

Ready-to-Use Firmware:

Precompiled firmware versions are also available for download, eliminating the need for firmware development in many cases. These firmwares are personalizable and configurable, can be adapted to various use cases with minimal effort.

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