ESP32_grbl CNC I/O RS485 Modbus CNC I/O Module for use with Spindle VFDs

RS485 CNC I/O Module

Sold by SmartElectronic


No tax for United States [change]
Stock available: 5

What is it?

This an RS485 Modbus CNC I/O Module designed for use with the 6 Pack Universal CNC Controller.
It can be used to control RS485 spindle VFDs. The current firmware supports Huanyang spindles with both the original and newer protocols.

RS485 Control is very robust and allows both precise speed control as well as direction control. The firmware constantly monitors the performance of the spindle and can stop your job if the spindle working properly.

Why did you make it?

This is our original PCB design, based on Bart Dring with some minor changed to adapt to our need.

What makes it special?

  • some components have been changed for optimization
  • connectors are JST XH2.54

DESCRIPTION This module is 100% compatible with Bart DRING module : It has a 3 position terminal block


  • This module
  • 1x XH2.54 3 pins (to be soldered)
  • 1x XH2.54 3 pins 10 cm wire to your sensor
  • 1x Nylon M3 screw


Please note that this item is to use with our 6 pack compact modular controller available in our Shop

Links to code and documentation

No additional links provided for this product.

Shipping policy

Usually, we do the shipping within 72H (full working days) from our factory but maybe a little longer depending on the product option selected.

Delivery may vary upon final destination and customs clearance on arrival and shipping option

The seller


haikou, Hainan, China
8 orders since Aug 2, 2022
SmartElectronic was born from the meeting of a group of engineers but also serial entrepreneurs. We decided to join forces in a single company offering our best knowledge and strong experiences with more than 35 years of comprehensive experience in electronic engineering.
SmartElectronic team is an active partner in projects related to open-Software, open-Hardware and open-Innovation.
Our team members are long-term involved in coworking space FabLab and other creative spaces and accumulate a strong experience in 3D printers and CNC.
With an International mindset, SmartElectronic's headquarter is located in Hainan Island "the Chinese Hawaii"- China.
Mixing people and cultures Situated at a civilization crossroads, we offer the best Asia and Western cultures to YOU!