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qPIO Raspberry Pi IO HAT mounted on a Pi, showing 4 relays and professional push-in terminal blocks.

qPIO HAT: 4 Relays, 8 Isolated Inputs - The Raspberry Pi I/O Solution.

The qPIO HAT provides industrial control capability for your Raspberry Pi. Featuring 4 high-current relay outputs and 8 optically isolated inputs (standard: 4 contact, 4 level-controlled). All channels utilize tool-less, push-in spring terminals for fast, secure wiring. Secure your projects with superior electrical isolation and professional connectivity.

Jump iconLearn About Our Approach

The Objective Behind qPIO

Close-up view of the qPIO Raspberry Pi IO HAT with 8 isolated input and 4 relay output

Our goal was simple: to create a reliable and durable I/O expansion module for the Raspberry Pi. We noticed a gap in the market for a professional-grade yet accessible solution that could be used by both hobbyists and industrial professionals alike. We wanted to build more than just a product; we aimed to provide a trusted solution that empowers you to take your projects to the next level with confidence, no matter the application.

Design Choices for qPIO

Form icon

From Factor

For easy assembly, qUPS has HAT form factor. Simply connect it via the 40 pin header.

Stackablility icon

Stackability

Pins on the connector are long ones, all can be accessed from the top of the product.

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Reliable connection

Massive, soldered pin header for power and signal connection. Pogo pins are not reliable.

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Zero firmware

Everything is done by hardware.

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GPIO communication

Easy programming. Avoid extra load on capacitance limited I2C bus. 12 GPIO ports for communication.

Isolation icon

Optical isolation

Optically isolated channels safeguard your Raspberry Pi from electrical noise and damage.

Input icon

Input types

Each inputs can be level or contact type. Type can be setup only at manufacturing process.

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Wide input voltage range

3-45V range for level type inputs.

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High quality IO connectors

All IO connectors are high quality, vibration-resistant spring terminals.

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Visual feedback

A dedicated LED shows the real-time ON/OFF status of each relay.

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Versatile SPDT Relays

Each relay features both Normally Open (NO) and Normally Closed (NC) contacts, letting you choose how to control your circuits.

qPIO User Interface and Indicators

Top view of the qPIO Raspberry Pi IO HAT with 8 isolated input and 4 relay output
Raspberry Pi 2x20 pin connector
1
Relays
3
LED feedback
2
Output connector
4
Input connector
5

1 - Raspberry Pi 2x20 pin connector
2 - LED feedback
3 - Relays
4 - Output connector
5 - Input connector

Technical Specs of the qPIO

Bandage iconPhysical parameters
Form factor
Raspberry Pi HAT
Dimensions
65x56x23 mm + 11mm header
Stackable
Yes
Input iconInputs
Number of input
8
Input types
Contact or Level
Input voltage range
3-45V
Output iconOutputs
Number of outputs
4
Output type
Relay
Relay type
SPDT
Max voltage
250V AC, 30V DC
Max current ("NO")
10A AC, 5A DC
Max current ("NC")
3A
Connector iconConnectors
Connection type
Spring terminal
Vibration resistant
Yes
Communication iconCommunication
Method
GPIO ports
Used GPIO ports for input
8
Used GPIO ports for output
4
Helmet iconSafety
Optical isolation
Yes
Indication iconIndication
Relay state
Yes
Software iconSoftware
Control software
C++ & Python

qPIO Manuals & Resources

Github logoGithub
More information, user manual and control software (C++ & Python) can be found on Github.

qPIO Gallery

Purchase Options for qPIO