PiBot CNC Laser Series :Start
PiBot v4 Series Product Overview Diagram
Wiki is continuously being updated.
PiBot CNC & Laser Motion Controllers
Drive up to 6+1 axes and run PWM, RS485 and 0–10V spindles or lasers, on FluidNC, grblHAL and GRBL 1.1. Three mainline boards — compare them below, then scroll down to order.
NEW
V5.88 Ultra
FLAGSHIP
BEST SELLER
V4.96 Pro
ISOLATED
V3.28 Iso
MCU
ESP32-S3
ESP32
ATmega328P
Firmware
FluidNC, grblHAL
FluidNC, grblHAL, GRBL 1.1f
GRBL 1.1h
Motion axes
6 + 1
6
3 (XXYYZ dual-drive)
Connectivity
WiFi / Bluetooth / USB
WiFi / Bluetooth / USB
USB
Spindle control
PWM, RS485, 0–10V
PWM, RS485, 0–10V
PWM, 0–10V
I/O isolation
Isolated RS485 bus
–
Full optocoupler, all I/O
SD card & pendant
micro-SD, pendant, I/O expander
micro-SD, pendant, I/O expander
–
Notable
Native 2nd USB host, expanded I/O
4-layer PCB, optimized SPI, 22 LEDs
Isolated 0–10V, hardware E-STOP
Best for
Multi-axis builds needing isolated industrial comms
Most CNC / laser builds; wireless all-rounder
VFD / industrial in electrically noisy cabinets
EntryV4.7 B — budget DIY board
SoonV4.77 — A Carrier Board
Firmware & software
Firmware
FluidNC WebUI
OpenBuilds
LaserGRBL
Candle
UGS
LightBurn
FluidNC
–
grblHAL
–
–
GRBL 1.1f
–
Tested Oct 2025. grblHAL runs a GRBL 1.1f compatibility mode, so most 1.1f software works. Run your own test to confirm your version.
Resources
| Feature | V4.96Pro | 4.7B |
|---|---|---|
| CORE HARDWARE | ||
| Onboard Main Chip | Built-in | Requires Module |
| PCB Layers | 4-Layer PCB | 2-Layer PCB |
| POWER MANAGEMENT | ||
| Power Input Design | Separate System & Drive Power | Single Power Input |
| Digital Input (Limit Switches/Buttons) | Configurable via SW-VCC Supports Multiple Switch Types |
Standard Switches Only |
| OUTPUT & CONTROL | ||
| 5V PWM Output | Available | Available |
| Vmot-main PWM Output | Available | Available |
| RS-485 Output | Available | Available |
| 10V Output | Available | Available |
| Onboard Relay | Available | Not Available |
| DRIVER SUPPORT | ||
| Driver Types | Onboard & Standard Drivers | Standard Drivers Only |
| SPI Driver | Optional | Not Available |
| EXPANSION & DISPLAY | ||
| OLED Module | Supported | Supported |
| Pendant & Expander | Supported | Supported |