Hello, for control boards shipped before April 7, 2026, due to our oversight in not removing the LED blink test
program, the M3 output port will intermittently turn off and on. Please refer to the flashing tutorial to re-flash the
fixed firmware.
https://www.bolangsk.cn/docs/reflash-firmware/
📚 Product Online Tutorial: https://www.bolangsk.cn/docs/product-introduction/
Hardware Specifications
The PI_GRBLHAL 5-axis control board uses Raspberry Pi’s latest RP2350 chip as the main controller.
It features the latest ARM Cortex-M33 core, dual-core 150MHz.
Industrial-Grade Isolation
In addition, all outputs/inputs of the control board adopt dual power supply + high-speed digital isolators + optocouplers, achieving true full isolation, comparable to industrial-grade products.
Software – GRBLHAL
For software, it uses GRBLHAL written by the godlike terjeio as the motion control software, suitable for CNC engravers and lathes.
⚠️ IMPORTANT: Before using this control board, please say a prayer of thanks to terjeio. 🙏
Features
- Supports drilling cycles such as
G73,G81 - Supports backlash compensation
- Supports handwheel (MPG)
- Supports 0-10V VFD spindle
- Supports lathe operations
- Supports S-curve acceleration/deceleration