01
Onboard M.2 slot for AI accelerators
PCIe, full 2280 length, for AI accelerator modules (Hailo-class NPU modules). The same slot also serves as an NVMe storage port.
Electronics · Starforge Mainboard V2
The controller platform for industrial and OEM machines.
Starforge mainboards are designed and manufactured in North America as commercial off-the-shelf control electronics for OEM 3D printers, OEM CNC and general-purpose motion control, with ITAR/EAR-compatible configurations available. V2 builds on the shipping V1 board with an onboard slot for AI accelerator modules.
V2 coming soon. More details to follow.
Starforge Mainboard V2 · pre-production render
V2 · Confirmed changes
What V2 adds.
The accelerator slot is designed for on-machine AI: real-time analysis of print metrics and adjustment during the print, to improve print quality and prevent errors, without sending data off the machine.
02
Dedicated accelerator power rail
A 5 A DC-DC rail feeds the accelerator slot, supporting modules drawing up to 10 W.
03
10 stepper drivers
Ten driver sockets, up from eight on V1, for multi-axis and multi-extrusion machines.
04
Real-time clock backup
RTC backup with a CR2032 cell.
05
Vertical DSI display connector
A vertical MIPI DSI connector for the machine display.
···
More details coming
Full specifications, imagery, compliance configurations and availability will be published here as they are finalized. Read the industry update for the background.
For machine builders
One platform, from controller to slicer.
Starforge electronics, PrintSlice Pro and the white-label program are built to be specified together: a controller platform for the machine, and a slicer that ships under your brand with your machine profiles already in it.
- Commercial off-the-shelf boards, manufactured in North America
- ITAR/EAR-compatible configurations through a consulting engagement
- Marlin, Klipper, RepRapFirmware and FreeRTOS firmware compatibility
- PrintSlice Pro profiles for your machines, white-labeled if you choose
Starforge V2 · pre-production render
Specification sheet
Starforge Mainboard V1 and V2, side by side.
Transcribed from the public specification sheet, with the confirmed V2 additions. Items marked New in V2 change or arrive with V2. V2 dimensions, imagery and availability: more details coming.
| Specification | V1 shipping | V2 coming soon |
|---|---|---|
| Compute and MCU | ||
| Processor (MCU) New in V2 | STM32 ARM Cortex-M4, 120 MHz | STM32 ARM Cortex-M7, 550 MHz |
| Compute module New in V2 | Raspberry Pi CM4: Broadcom BCM2711 quad-core Cortex-A72 (ARM v8) 64-bit SoC at 1.5 GHz | Raspberry Pi CM5: Broadcom BCM2712 quad-core 64-bit Arm Cortex-A76 (Armv8) SoC at 2.4 GHz |
| Flash / RAM New in V2 | 512 KB flash / 128 KB RAM | 512 KB flash / 564 KB RAM |
| Secure boot New in V2 | Supported (CM4 only) | Supported (CM5 and MCU) |
| Data encryption | AES-256 encryption for data at rest and in transit | AES-256 encryption for data at rest and in transit |
| Real-time clock backup New in V2 | — | RTC backup with a CR2032 cell |
| Motion and drivers | ||
| Stepper driver interface New in V2 | 8 stepper driver sockets | 10 stepper driver sockets |
| Number of extruders | Up to 3 extruders supported | Up to 3 extruders supported |
| Motor input range New in V2 | 24 VDC | 24 to 48 VDC |
| Endstop inputs | 6 x 2/3-wire input | 6 x 2/3-wire input |
| Servo control | 2 x servo control outputs | 2 x servo control outputs |
| E-stop button interface | 1 x input | 1 x input |
| Heaters, fans and sensors | ||
| Heated bed output | 5 VDC SSR control output | 5 VDC SSR control output |
| Heated chamber output | 5 VDC SSR control output | 5 VDC SSR control output |
| Hotend outputs | 2 x 24 V high-power outputs (5 A each) | 2 x 24 V high-power outputs (5 A each) |
| Fan outputs | 6 controllable PWM outputs; 5/12/24 V adjustable | 6 controllable PWM outputs; 5/12/24 V adjustable |
| Temperature sensor inputs | 4 x thermistor (MAX31856), 2 x thermocouple (AD595/7), 2 x 2/3/4-wire RTD (PT100(0)) | 4 x thermistor (MAX31856), 2 x thermocouple (AD595/7), 2 x 2/3/4-wire RTD (PT100(0)) |
| LED support | NeoPixel (WS2812); bed, extruder 1 and extruder 2 LED indicator support | NeoPixel (WS2812); bed, extruder 1 and extruder 2 LED indicator support |
| I/O and connectivity | ||
| Bus interfaces New in V2 | I2C, CAN, serial | I2C, CAN (dedicated controller with Candlelight firmware), serial |
| Connectivity New in V2 | USB 2.0, 1 Gbps Ethernet | USB 2.0, USB-C, 1 Gbps Ethernet |
| Wi-Fi support | No onboard Wi-Fi (ITAR/EAR friendly); USB adapter available | No onboard Wi-Fi (ITAR/EAR friendly); USB adapter available |
| Power | ||
| Power input range | 24 VDC | 24 VDC |
| Fuse protection | Main power input, stepper motor power input | Main power input, stepper motor power input |
| Auxiliary output New in V2 | 24 V high-power output (5 A) | 24 VDC |
| Static power outputs (always on) New in V2 | 1 x 12 V | 3 x 5 V, 3 x 12 V, 3 x 24 V |
| Accelerator power rail New in V2 | — | Dedicated 5 A DC-DC rail for the M.2 slot; supports modules drawing up to 10 W |
| Display | ||
| Display interface New in V2 | MIPI DSI | MIPI DSI; Mini-HDMI |
| DSI connector New in V2 | — | Vertical MIPI DSI connector |
| Expansion and AI | ||
| M.2 slot New in V2 | — | Onboard M.2 PCIe slot, full 2280 length, for AI accelerator modules (Hailo-class NPU modules); also serves as an NVMe storage port |
| Firmware and compliance | ||
| Firmware compatibility | Marlin, Klipper, RepRapFirmware, FreeRTOS | Marlin, Klipper, RepRapFirmware, FreeRTOS |
| Certifications | FCC Part 15 Subpart B (planned) | FCC Part 15 Subpart B (planned) |
| ITAR/EAR compatibility | Yes; consulting services engagement required | Yes; consulting services engagement required |
| Warranty | 1-year limited | 1-year limited |
| Manufacturing location | North America | North America |
| Intended use cases | OEM 3D printers, OEM CNC, general-purpose motion control | OEM 3D printers, OEM CNC, general-purpose motion control |
| Mechanical | ||
| Dimensions (approx.) New in V2 | 160 mm x 119 mm (4 mounting holes, M3) | TBD (4 mounting holes, M3) |
| Operating temperature | 0 to 60 C (typical) | 0 to 60 C (typical) |
Starforge Mainboard · V1, shipping today
V1 · Shipping today
HTX Starforge Mainboard V1.
The board that runs the HTX and is available now for OEM machines.
OEM manufacturers
Be first to hear when the V2 board ships.
Tell us about your machine and your compliance requirements, and we will keep you informed as specifications and availability are confirmed.