2 layers100 × 70 mm
MotorDriver
JeyRunner/actonator
3D printable robot actuator with belt-driven gearbox and custom FOC driver board.
177 parts10MIT
2 layers63.8 × 95.8 mm
Control cnc esp32D
IagoAbreu-Core/CNC_ESP32CNC control plate for 4 motors
- Size
- 63.8 × 95.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 59
- Pads
- 149
- Tracks, vias
- 394, 33
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Aug 2026
- Updated
- 23 Aug 2026
Overview
Control cnc esp32D is an open-source printed circuit board by IagoAbreu-Core, from the IagoAbreu-Core/CNC_ESP32 repository on GitHub. It is a 2-layer board of 63.8 × 95.8 mm with 23 parts on 59 nets, routed with 394 tracks and 33 vias.
It is built around the ESP32-DEVKITC-VE, L7805 and MUR460. Its parts include 7 capacitors, 5 connectors, 2 ICs and 1 diode. It belongs with the robots and motor control boards and the ESP32 boards of this library.
Main components
3
ESP32-DEVKITC-VE
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
MUR460
DO-201AD-55℃~+150℃ 1.7V@4A 4A 50ns 5uA@600V 600V DO-201AD Fast Recovery / High Efficiency Diodes ROHSMDDFast Recovery / High Efficiency Diodes
README
README.md🤖 ESP32 4-Axis CNC Stepper Motor Controller PCB
📌 Project Overview
This repository contains the complete hardware design for an ESP32-based 4-Axis CNC & Stepper Motor Controller Board, designed using KiCad. The board provides a compact and integrated solution for controlling up to 4 stepper motor axis using A4988 driver modules paired with an ESP32-DevKitC (ESP32D) microcontroller.
⚡ Key Layout & Design Enhancements
- Layer Isolation Optimization (Top Layer GND Plane):
- The Top Layer routing was optimized to minimize track count, maximizing the solid Ground Fill (GND) area for enhanced noise immunity and thermal dissipation.
- Power Routing Strategy (Bottom Layer):
- The Bottom Layer handles most signal and power traces, ensuring proper trace width sizing:
- Power Traces (8V–20V VMOT): Sized at 1.0 mm to safely handle motor drive current up to 2A.
- Logic Power Traces (5V): Sized at 0.5 mm for clean voltage regulation.
- The Bottom Layer handles most signal and power traces, ensuring proper trace width sizing:
- Decoupling & Protection:
- Dedicated 100µF/25V capacitors placed close to each A4988 driver module to absorb inductive voltage spikes.
- Reverse voltage / flyback protection diode (MUR460) at the main power stage.
🛠️ Technical Specifications
- Microcontroller: ESP32-DevKitC (ESP32D Core)
- Motor Drivers: 4x A4988 Breakout Socket Modules (X, Y, Z, A / Extruder / Dual Axis)
- Input Power Supply: DC Barrel Jack (8V to 20V DC)
- Logic Voltage Stage: Integrated L7805 Linear Regulator (5V Rail) + Onboard ESP32 3.3V LDO
- Motor Connectors: 4x 4-Pin Connectors (1A, 1B, 2A, 2B per axis)
- EDA Tool: KiCad E.D.A.
📋 Bill of Materials (BOM)
| Reference | Component / Value | Quantity | Description |
|---|---|---|---|
| U1 | ESP32-DevKitC (ESP32D) | 1 | Microcontroller Development Board |
| A1, A2, A3, A4 | Pololu Breakout A4988 | 4 | Stepper Motor Driver Modules |
| U2 | L7805 | 1 | 5V Linear Voltage Regulator (TO-220) |
| D1 | MUR460 | 1 | 4A / 600V Fast Recovery Diode |
| J1 | Barrel Jack Switch | 1 | DC Power Jack (8V–20V Input) |
| J2, J3, J4, J5 | Conn_01x04_Pin | 4 | 4-Pin Motor Output Headers |
| C1, C2, C3, C4 | 100µF / 25V | 4 | Radial Electrolytic Decoupling Capacitors |
| C5 | 1000µF / 16V | 1 | 5V Rail Bulk Filter Capacitor |
| C6, C7 | 0.1µF | 2 | High-Frequency Noise Filtering Ceramic Capacitors |
📄 A complete
.csvversion of the BOM is available in the root folder:control_cnc_esp32D.csv
📐 Schematic & Board Layout
1. Board Views (Top & Bottom Layers)
| Top PCB Copper Layout | Bottom PCB Copper Layout |
|---|---|
 |  |
2. Full Schematic Diagram
📁 Repository Structure
/gerber: Production Gerber, Drill, and Position files ready for PCB manufacturing (JLCPCB, PCBWay, etc.)./media: 3D renders, layer previews, and schematic diagrams.control_cnc_esp32D.csv: Complete Bill of Materials (BOM).control_cnc_esp32D.kicad_sch&control_cnc_esp32D.kicad_pcb: Source design files.
👨💻 Developer: [Iago Abreu]
✉️ Open for freelance opportunities: Schematic capture, KiCad PCB Layout, and Gerber generation.
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100uf/25v | Capacitor_THT:CP_Radial_D10.0mm_P3.50mm | C1, C2, C3, C4 |
| 4 | Conn_01x04_Pin | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1, J2, J3, J4 |
| 4 | Pololu_Breakout_A4988 | Module:Pololu_Breakout-16_15.2x20.3mm | A1, A2, A3, A4 |
| 2 | 0.1uf | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C6, C7 |
| 1 | 1000uF/16v | Capacitor_THT:CP_Radial_D10.0mm_P3.50mm | C5 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J5 |
| 1 | ESP32-DevKitC | PCM_Espressif:ESP32-DevKitC | U1 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-252-3_TabPin2 | U2 |
| 1 | MUR460 | Diode_THT:D_DO-201AE_P15.24mm_Horizontal | D1 |
The 19 most common of 23 parts.
Questions
How big is the Control cnc esp32D PCB?
It measures 63.8 × 95.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Control cnc esp32D use?
23 parts, built around the ESP32-DEVKITC-VE, L7805 and MUR460. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Control cnc esp32D KiCad files?
From the IagoAbreu-Core/CNC_ESP32 repository on GitHub, at the commit this page was made from: the board is control_cnc_esp32D.kicad_pcb and its schematic control_cnc_esp32D.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Control cnc esp32D design in my own project?
Its repository states no licence, so its author keeps all rights: ask IagoAbreu-Core before reusing the design.
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