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qRecon Relay HAT mounted on Raspberry Pi 5. Shows 4 relays and full setup.

qRecon: Configurable 4-Channel Relay HAT for Raspberry Pi IO Expansion

Unlock your Raspberry Pi's potential with this robust 4-channel relay module. Featuring premium Schrack relays, optical isolation, and configurable GPIOs and Active High and Active Low control, it gives you the confidence and reliability your projects deserve.

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The Objective Behind qRecon

qRecon: Raspberry Pi Relay HAT - 4 relay, selectable GPIO & Active H/L
Our goal with the qRecon was to create a professional-grade relay module that puts safety and reliability first. We noticed that many existing solutions lack the features needed for demanding projects. We built it to be a robust and flexible tool that you can rely on to control high-power devices with absolute confidence, providing the peace of mind that comes with a truly trusted solution.

Design Choices for qRecon

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From Factor

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

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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. 4 GPIO ports for communication.

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Optical isolation

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

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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.

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Configurable Control Logic

Easily switch between Active High and Active Low with a simple jumper setting.

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Flexible GPIO Selection

Choose between two GPIO groups to best fit your project and avoid conflicts with other add-on boards.

qRecon Flex User Interface and Indicators

Top-down view of qRecon Raspberry Pi HAT showing 4 relays, connectors & electronics.
Raspberry Pi 2x20 pin connector
1
Relay 1 & 2 output connector
3
Channel 1 LED
4
DIP Switch: setup GPIO ports, Active level (H/L)
2
Relay 3 & 4 output connector
6
Channel 2 LED
5
Channel 3 LED
7
Channel 4 LED
8

1 - Raspberry Pi 2x20 pin connector
2 - DIP Switch: setup GPIO ports, Active level (H/L)
3 - Relay 1 & 2 output connector
4 - Channel 1 LED
5 - Channel 2 LED
6 - Relay 3 & 4 output connector
7 - Channel 3 LED
8 - Channel 4 LED

Technical Specs of the qRecon

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Physical parameters

Form factor
Raspberry Pi HAT
Dimensions
65x56x23mm + 11mm header
Stackable
Yes
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Outputs

Number of outputs
4
Output type
Relay
Relay type
SPDT
Max AC voltage
250V
Max DC voltage
28V (10A), 300V (0.5A)
Max NO current
10A
Max NC current
3A
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Connectors

Connection type
Terminal block
Vibration resistant
No
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Communication

Method
GPIO ports
Used GPIO ports
4
GPIO groups
2 options
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Safety

Optical isolation
Yes
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Indication

Relay state
Yes
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Software

Control software
C++ & Python

qRecon Manuals & Resources

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

qRecon Gallery

Purchase Options for qRecon