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.
The Objective Behind qRecon
Design Choices for qRecon
From Factor
For easy assembly, qUPS has HAT form factor. Simply connect it via the 40 pin header.
Stackability
Pins on the connector are long ones, all can be accessed from the top of the product.
Reliable connection
Massive, soldered pin header for power and signal connection. Pogo pins are not reliable.
Zero firmware
Everything is done by hardware.
GPIO communication
Easy programming. Avoid extra load on capacitance limited I2C bus. 4 GPIO ports for communication.
Optical isolation
Optically isolated channels safeguard your Raspberry Pi from electrical noise and damage.
Visual feedback
A dedicated LED shows the real-time ON/OFF status of each relay.
Versatile SPDT Relays
Each relay features both Normally Open (NO) and Normally Closed (NC) contacts, letting you choose how to control your circuits.
Configurable Control Logic
Easily switch between Active High and Active Low with a simple jumper setting.
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
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
Physical parameters
- Form factor
- Raspberry Pi HAT
- Dimensions
- 65x56x23mm + 11mm header
- Stackable

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
Connectors
- Connection type
- Terminal block
- Vibration resistant

Communication
- Method
- GPIO ports
- Used GPIO ports
- 4
- GPIO groups
- 2 options
Safety
- Optical isolation

Indication
- Relay state

Software
- Control software
- C++ & Python
