The JGAurora A5S and JGAurora A1 are new printers released in October 2018. They feature a new 32-bit motherboard developed in-house by JGAurora, using Allegro A5984 stepper drivers with 32x microstepping, delivering much improved printing performance over their predecessor, the A5. Both of these printers also feature smart features like power outage resuming, and filament run out sensors. The A5S and A1 printers have large print volumes of 300x300x320 and 300x300x300 respectively.

In April 2019, JGAurora also released an updated JGAurora A3S MkII, with the same design as the previous A3S, but using the same modern 32-bit motherboard used on the A5S and A1.

JGAurora A5S & A1 Discussion forum

• Amazon USA
• Aliexpress (JGAurora Official Store)
• Gearbest - use Gearbest A5S coupon GBA5S11
• UK: NSE Imports - use coupon JGWIKI5 for 5% off a JG 3D printer!

• Amazon USA
• Gearbest
• Aliexpress (JGAurora Official Store)

• Da Hai Zhu - Initial review
• Da Hai Zhu - Final review
• Sam's 3D printer Reviews: A5S
• Teaching Tech with Michael Laws: A5S Full Review

• Sam's 3D printer Reviews: A5S vs A1 Quick Comparison

For information on upgrading the A5S and A1 firmware, please see this page.

• Download JGMaker A5S & A1 Official Factory Firmware
• Download JGAurora A5S & A1 Community Marlin 2.0 Firmware

• Mesh Bed Levelling on the A5S & A1
• Upgrading and installing custom firmware
• Repairing damaged bed connectors - read this if you are having problems heating your bed.
• Direct Drive & Dual Materials Upgrades at InventBox
• DIY Direct Drive modification

• Y-axis (bed) bearings: 4x LM10UU
• X-axis top bearing: 1x LM8LUU
• X-axis bottom bearing: 1x LM8UU

• From Amazon USA
• From Hong Kong, shipping worldwide

• from JGAurora on Aliexpress
• from JGAurora on Amazon USA

Credit to DaHai Zhu

(Click to enlarge)

If you wish to flash the firmware but do not want to use the SD card, or if your bootloader is damaged, there is another way to flash firmware, using the SWD interface on the motherborad. Note: the pinout is completely non-standard, please see the image above, and follow the instructions below.

Connect this port up to an ST-Link V2 using jumper wires / dupont cables, and you will be able to backup and upgrade the firmware on the A5S & A1. I recommend NOT plugging in the 3.3V line, but instead provide power to the board via USB cable, and only use the data and GND lines on the ST-Link header connection. I recommend you use the STM32 ST-LINK Utility (STSW-LINK004). Please post on the jgaurora forum firmware discussion thread if you want any help with this!