Nexus Lite Raspberry Pi IO HAT with relays shown mounted on a Pi.

AQEX Synapse Nexus Lite: Essential Raspberry Pi IO Module for Simple Tasks

Why pay for 8 ports when you only need 2? Nexus Lite is the most affordable way to add isolated inputs and relays to your Raspberry Pi.

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The Objective Behind Synapse Nexus Lite

Nexus Lite Raspberry Pi IO HAT : Clearly visible I/O terminals & relays.

Most Raspberry Pi IO modules are overpriced and oversized for simple tasks, as they offer more ports than required. We have designed Synapse Nexus Lite to eliminate the cost of unused capacity.
By focusing on 2 opto-isolated inputs and 2 relay outputs, we created a compact and budget-friendly module. It provides professional-grade protection and control for projects where two channels are exactly enough.

Design Choices for Synapse Nexus Lite

Form icon

From Factor

For easy assembly, Nexus Lite 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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High quality IO connectors

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

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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. Only 4 GPIO ports for communication.

Isolation icon

Optical isolation

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

High-Low icon

Wide input voltage range

3-45V range for level type inputs.

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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.

Pin allocation of the Synapse Nexus Lite

Input 1/17
Input 2/27
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Relay Out 1/14
Relay Out 2/15

Synapse Nexus Lite User Interface and Indicators

Nexus Lite top view: Clearly visible I/O terminals relays.
Raspberry Pi 2x20 pin connector
1
Relays
2
Output connectors
3
Input connectors
4

1 - Raspberry Pi 2x20 pin connector
2 - Relays
3 - Output connectors
4 - Input connectors

Technical Specs of the Synapse Nexus Lite

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Physical parameters

Form factor
Raspberry Pi HAT
Dimensions
65x56x18mm + 11mm header
Stackable
Yes
Input iconInputs
Number of input
2
Input types
Level
Input voltage range
3-45V
Output iconOutputs
Number of outputs
2
Output type
Relay
Relay type
SPDT
Max voltage
240VAC, 24VDC
Max current resistive
7A
Max current inductive
3A
Connector iconConnectors
Connection type
Spring terminal
Vibration resistant
Yes
Communication iconCommunication
Method
GPIO ports
Used GPIO ports for input
2
Used GPIO ports for output
2
Helmet iconSafety
Optical isolation
Yes
Software iconSoftware
Control software
C++ & Python

Synapse Nexus Lite Manuals & Resources

Github icon

Github

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

download icon Download control software Read icon Read the user manual Search icon Find more information

Synapse Nexus Lite Gallery

Nexus Lite Raspberry Pi IO HAT with relays shown mounted on a Pi. Nexus Lite top view: Clearly visible I/O terminals relays. Nexus Lite Raspberry Pi IO HAT : Clearly visible I/O terminals & relays. Nexus Lite Raspberry Pi IO HAT : Bottom view loading=
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Synapse Nexus Lite 3D view & Model

Purchase Options for Synapse Nexus Lite