# Aurora

# Overview

The Aurora has many inputs and outputs and it is critical to understand their purpose and usage before attempting to wire the board. Each connection will be described in detail.

  • Ethernet: Used for direct internet connection if the Wireless option isn’t used
  • USB: USB ports for storage, accessories like mouse, webcam and keyboard
  • HDMI: Used for display
  • Power Entry: Main power input for the Aurora
  • Emergency: Emergency button wiring
  • Power Switch: Power button wiring
  • Endstop, Switches and Probes: Fast reactive inputs for homing and instantaneous triggering
  • DyzeProtocol: Aurora peripherals network for modules
⚠️ Both Ethernet and DyzeProtocol are using a RJ45 connector. Make sure not to mistake them as they are not electrically compatible. The DyzeProtocol has a red tape over it to help differentiate.

# Cables and connectors

Connection Connector Suggested Wire
Ethernet RJ45 CAT5 or better
USB USB Type A Any
HDMI HDMI Standard Any
Power Entry Screw Terminal 12-22 AWG
Emergency Push-in Spring Connector 16-24 AWG
Power Switch Screw Terminal 18-26 AWG
Endstop, Switches and Probes Push-in Spring connector 16-24 AWG
DyzeProtocol RJ45 Shielded Cat5E or better

# Detailed connections

# Ethernet

Gigabit Ethernet is supported through a standard RJ45 connector.

# USB

6 ports are available for accessories such as touchscreen, mouse, keyboard and camera.

# HDMI

One HDMI 2.0 capable of 4K (3840 x 2160) resolution up to 60 FPS. Is it advised to use a monitor of 7 in or bigger, as the interface isn’t ideal for small screens.

# Power Entry

24V GND
+24V only Power ground
⚠️ The power must not be interrupted by the emergency switch. The Aurora must stay powered while other devices are shut down for security.

# Emergency

IN + 24V GND IN-
Isolated positive input, must be connected This 24V can be used to feed the IN+ input. This can be used to feed the IN- input. Isolated negative input, must be connected
# Wiring Example 1
Emergency stop wiring example #1, when motor drivers are connected to a different power supply with an isolated ground path, the emergency stop input is electrically isolated from the mainboard power and ground.
# Wiring Example 2
Emergency stop wiring example #2, when motor drivers are connected to the same power supply as the mainboard.

# Power Switch


A normally closed (NC) SPST switch should be connected to this terminal block. If the power button is not required, this input must be left unconnected. The button will turn on and turn off the mainboard.

# Endstop, Switches and Probes

IN + 3V3 GND IN-
Could be used to acquire an active high signal. from a switch or an active sensor. Must be left unconnected if it's not used. Provide a power source to supply a switch or an active sensor. Provide a ground source to supply a switch or an active sensor. Could be used to acquire an active low signal, from a switch or an active sensor. Must be left unconnected if it's not used.

# DyzeProtocol


Cables for DyzeProtocol should be wired according to the standard T-568A RJ-45 and the cable be CAT5E or greater. The DyzeProtocol should be daisy-chained from one module to the other.

An ending connector must be installed at the end of this chain, this connector will terminate the chain and ensure that the signal integrity of the line is preserved.

⚠️ The modules can be connected in any order via DyzeProtocol to best suit your wiring and layout.

# LEDs

# UPS LEDs

CHRG BRD RDY BATT 5V LINE 5V
On when the power bank is charging. On when the mainboard is ready to operate. A first cycle of charging has to be completed. On when a power down is detected, the battery backup is activated and the shutdown cycle is engaged. On when the power line regulator is active.

# CM4 LEDs

CM4 PWR CM4 ACT
On when the CM4 is powered. On when activity (read/write) is detected on the CM4 memory.