PiBot FluidNC GrblHAL ESP32-S3 6+1 Axis CNC Controller V5.88 Ultra

New Ultra V5.88 Pro Now inStock!

Available Product

V5.88 Ultra Kit： V5.88 Ultra Board x 1 + OLED x 1 + Antenna x 1 + XH2.54 Wire + Jumper Caps

Package 1： V5.88 Ultra Kit x 1 + Electronic Box x 1

Package 2： V5.88 Ultra Kit x 1 + IsoSwitch x 1

Package 3： V5.88 Ultra Kit x 1 + DRV8825 x 6

Package 4： V5.88 Ultra Kit x 1 + Tmc5160 x 4

Package 5： V5.88 Ultra Kit x 1 + Electronic Box x 1 + IsoSwitch x 1 + DRV8825 x 6

Package 6： V5.88 Ultra Kit x 1 + Electronic Box x 1 + Tmc5160 x 4

Package 7： V5.88 Ultra Kit x 1 + Tmc5160 V4 x 4 + IsoSwitch x 1 + Electronic Box x 1 + I/O Expander x 1

Package 8： V5.88 Ultra Kit x 1 + Tmc5160 V4 x 4 + IsoSwitch x 1 + Electronic Box x 1 + I/O Expander x 1 + Pendant V4 x 1

V5.88 Ultra Board： V5.88 Ultra Board x 1

PiBot Controller V5.88 Ultra

6+1 Axis ESP32-S3 CNC Controller · FluidNC Ready · grblHAL Support In Development · Industrial-Grade I/O

The V5.88 Ultra is PiBot's flagship CNC controller. Built around the ESP32-S3-WROOM-1U-N8R8 (dual-core LX7, 8 MB Flash + 8 MB octal PSRAM, external IPEX antenna), it runs FluidNC out of the box (a grblHAL port is in development — see firmware section below), drives up to 7 independent axes, and brings genuine industrial-grade features — fully isolated RS485, 10 opto-isolated inputs, simultaneous OLED + UART + expander operation — into a hobbyist-friendly price point. From the smallest 3018 desktop router to a full-sheet plasma cutter with VFD spindle, one Board, every workshop.

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What Does This Board Do?

Every CNC machine — a router, laser cutter, plasma cutter, or mill — needs a "brain" that turns your design file into precise motor movements. The V5.88 Ultra is exactly that brain. It:

Reads your G-code program (the file your CAM software produces) over USB, WiFi, or from an SD card

Drives the stepper motors that move the X, Y, Z and additional axes

Controls your spindle via PWM, 0–10 V analog, or Modbus RTU — or your laser

Reads limit switches, probes, the touch plate, and the emergency stop

Switches coolant pumps, relays, dust extractors, and accessories through built-in MOSFET outputs

Coordinates everything through WiFi WebUI, Bluetooth pendants, or USB G-code senders

Wire it up, point your browser at its WiFi access point, paste in a YAML config, and your machine runs. No firmware compilation. No Arduino IDE. No proprietary software.

What Can You Build With It?

The V5.88 Ultra was designed to be the single Board you reach for, regardless of the machine you're building. Its 6+1 axis layout, on-Board and external driver support, isolated RS485, and wide 12–24 V input make it suitable for everything from compact desktop laser engravers to plasma cutters and full-sheet routers with VFD spindles.

Open-Source DIY Frames

Desktop Machine Upgrades

Multi-Axis Builds

VFD & Plasma

Specialized Machines

Industrial Retrofits

Open-source machine designs listed above (MPCNC, LowRider, PrintNC, etc.) are community-developed under permissive licenses. The V5.88 Ultra is independently designed and not affiliated with V1 Engineering, OpenBuilds, or any individual machine manufacturer. Always verify wiring and YAML configuration against your specific build.

Product Wiki

wiki.pibot.com

All Product Images

V5.88 Ultra Board

V5.88 Ultra Kit

DRV8825

Tmc5160

PiBot IsoSwitch

Electronic Box

I/O Expander for FluindNC

Pendant V4