Bambu Lab AMS lite Mainboard The Control Board That Runs the AMS lite.
Genuine Replacement Control Board for the AMS lite.
The AMS lite Mainboard is the control PCB inside Bambu Lab’s AMS lite — the open-spool four-slot automatic material system that ships with the A1 and A1 mini. It drives the feeder motors, reads the filament sensors, and handles communication with the printer so all four channels load, unload, and switch on cue. Order it as a genuine Bambu Lab replacement to bring an AMS lite with a faulty board back to life. Full specifications →
Genuine Bambu part, stocked in the USA — ships from Rev1. Not sure your AMS lite needs the board? Call (248) 707-2950.
Genuine Bambu Lab Part. US Stock, Fast Shipping.
The AMS lite Mainboard is an authentic Bambu Lab replacement part, supplied and supported by Rev1 Technologies — your authorized Bambu Lab reseller in Auburn Hills, Michigan. Not a third-party clone.
The Brain of the AMS lite.
Every AMS lite has one control board coordinating the whole system. It runs the four feeder motors, reads each channel’s filament sensor, talks to the printer over the AMS cable, and sequences the loads, unloads, and channel switches during a multi-color or multi-material print. On this board an ARM-based GD32 microcontroller handles that logic, with a bank of channel connectors along the edge for the feeders and sensors. When the board fails, the AMS lite stops responding correctly — this is the part that restores it.
A Direct OEM Board Swap.
This is the genuine Bambu Lab board, so it matches the original’s layout, connectors, and firmware behavior exactly — the feeders, sensors, and printer cable all land where they should. It ships with the three mounting screws needed to seat it. Follow Bambu’s replacement guide, transfer the connectors, and the AMS lite is back to coordinating all four channels.
Built for the AMS lite — A1 and A1 mini.
This mainboard is the AMS lite part — the open-spool system used with the Bambu Lab A1 and A1 mini. It is not the board for the enclosed AMS unit that pairs with the X1 and P1 series; that’s a different system. If you run an A1 or A1 mini with an AMS lite, this is the control board inside it. When in doubt, Rev1 can confirm the right part for your machine before you order.
Bambu Lab AMS lite Mainboard — Specs
WHY REV1 TECH
Authorized Bambu Lab Reseller. Additive Specialists.
Rev1 Technologies is an authorized Bambu Lab reseller in Auburn Hills, MI, supporting engineers, print farms, and manufacturers across the USA.
We stock the Bambu ecosystem and support it — from printers and filament to the AMS units and the spare parts that keep them running. Buy the replacement from a team that can help you fit it.
FAQ
Frequently Asked Questions
What is the AMS lite Mainboard?
It’s the control PCB inside Bambu Lab’s AMS lite — the open-spool four-slot material system used with the A1 and A1 mini. It drives the feeder motors, reads the filament sensors, and communicates with the printer to sequence loads, unloads, and channel switches. It’s sold as a genuine replacement part.
Which printers and AMS does it fit?
It fits the Bambu Lab AMS lite, which is used with the A1 and A1 mini printers. It is not the board for the enclosed AMS unit that pairs with the X1 and P1 series — that’s a different system. If you’re unsure which AMS you have, contact Rev1 and we’ll confirm before you order.
When would I need to replace it?
Typically when the AMS lite stops responding, misreads channels, or fails to drive the feeders even though the mechanics are fine — symptoms that point to the control board rather than a feeder. It’s also worth keeping a spare on hand if you run a farm of A1 machines.
Does it come with mounting hardware?
Yes — the board ships with the three mounting screws used to seat it in the AMS lite. You transfer the existing connectors from the old board to the new one following Bambu Lab’s official replacement guide.
Is this a genuine Bambu Lab part?
Yes. Rev1 Technologies is an authorized Bambu Lab reseller, and this is a genuine Bambu Lab replacement — not a third-party clone. On a control board, matching layout, connectors, and firmware behavior is what makes the swap drop in and work, which is why the OEM part matters.
What’s the difference between the AMS lite and the AMS?
The AMS lite is the open-spool, four-slot system that pairs with the A1 and A1 mini — spools mount externally and feed in. The standard AMS is the enclosed unit used with the X1 and P1 series. They are different systems with different boards, so make sure you’re ordering the AMS lite part for an A1 or A1 mini.