ESP32 Stepper CNC Controller Kit with ESP32 + Stepper Motor
Turn Your ESP32 into a Real-Time 3-Axis CNC Controller with GRBL-ESP32 and NEMA17 Steppers
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform raw G-code into precise, synchronized movement with this ESP32-based CNC controller. You’ll flash the GRBL-ESP32 firmware, wire three NEMA17 axes, and command them wirelessly through WebSocket—perfect for prototyping small CNC mills, laser engravers, or pen plotters in a day’s work.
What You'll Build
A standalone 3-axis motion controller that interprets standard G-code from any WebSocket sender (like bCNC or UGS) and drives stepper motors with sub-millimeter accuracy. Once assembled, you can mount it onto a mechanical frame and immediately run toolpaths without messy USB tethers.
What You'll Learn
- Compile and flash GRBL-ESP32 firmware onto an ESP32 Dev Board
- Configure axis parameters, microstepping, and endstop logic directly in the firmware
- Synchronize three NEMA17 steppers using A4988 drivers on a CNC Shield V3
- Establish a real-time WebSocket connection for wireless G-code streaming
- Prototype and solder a reliable motion control board with proper decoupling capacitors
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| NEMA 17 Stepper | 3 |
| A4988 Driver | 3 |
| CNC Shield V3 | 1 |
| 12V 3A PSU | 1 |
| GT2 Belt 1m | 3 |
| GT2 Pulley | 3 |
| 100nF Caps | 15 |
| PCB Prototype Board | 2 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This advanced kit is designed for B.Tech ECE/EEE students tackling industrial motion control projects, Smart India Hackathon teams automating robotics solutions, and IIT/NIT/VIT/BITS makers building custom CNC routers or laser engravers from scratch. Familiarity with Arduino IDE and basic soldering is assumed.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on the box to launch the AI companion customized for this ESP32 CNC controller. It guides you through troubleshooting firmware compilation, wiring, and WebSocket connectivity. If you need more help, our engineers are available on WhatsApp.
Can I use this controller for a full CNC router or laser engraver?
Yes. The board outputs step and direction signals for three axes, compatible with most mechanical motion platforms. Add your frame, tool head, and limit switches, and you’ll have a functional machine.
What software do I need to send G-code?
Any WebSocket-capable G-code sender like UGS Platform or bCNC works. The kit’s guide shows you how to connect to the ESP32’s IP address after flashing GRBL-ESP32 firmware.
Does the kit support USB control too?
GRBL-ESP32 firmware also enables USB serial communication, but we recommend the wireless WebSocket method for real-time, tether-free operation that matches modern maker workflows.
ESP32 runs GRBL-ESP32 firmware. Three NEMA17 axes respond to G-code over WebSocket in real time.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items