Wireless Control, Easy Integration
Wi-Fi Stepper is a feature-packed, easy-to-use, stepper motor controller accessible over Wi-Fi. It can handle small to big stepper motors under high current. You can send crypto-secured commands over Wi-Fi from a computer, phone, or any other platform. Integration with other controllers is possible using the step clock and direction input pins. Wi-Fi Stepper makes controlling a stepper motor easy and productive.
Wi-Fi Stepper front and back
Use Wi-Fi Stepper in projects like:
- Home automation
- Robotics
- CNC routers
- Security access devices
- Pumps and dispensers
Big or small, bring your motor into the IoT world.
Many projects need a way to interact with the real world. For a lot of applications, stepper motors are the preferred way. They work well at slow to medium speeds and without gearbox reductions. There are plenty of inexpensive NEMA mounts to choose from. They have excellent torque ratings and can even provide high torque at extremely low speed. Stepper motors can run at speed, or as a servo that holds position at any angle. Stepper motors are commonly used in CNC applications and are a great entry-level motor to learn the basics.
With a proper power supply, this project supports most motors on the market. With its voltage and current ratings, even the mammoth NEMA 42 is within its comfort zone for the most demanding applications.
The software side of stepper control is also made easier with Wi-Fi Steppers open source software integration options, including a powerful web application with quickstart functions and guides.
(1) NEMA 11 (2) NEMA 17 (3) NEMA 23 (4) NEMA 34 (5) NEMA 34 high torque
Features & Specifications
- Motor Compatibility
- Stepper driver: powerSTEP01
- NEMA preset profiles: 11, 17, 23, 34, 42
- Maximum speed: 4500 RPM
- Operating modes: both voltage (PWM) and current (sense resistor feedback)
- Boards chainable for simultaneous multiple motor control
- Configuration Options
- Current control down to 1/16 microstepping with high hold torque
- Voltage control down to 1/128 microstepping and smooth motion with low noise
- Safety features (current/voltage/thermal shutdowns)
- Advanced speed profiles (acceleration and deceleration slopes)
- Waveform generation and timing settings
- Power supply sag/swell compensation
- Predictive current compensation
- Back EMF adjustment
- Stall detection
- Power
- Voltage regulation: MAX15062 high-efficiency voltage regulator
- Input voltage: 9-80 V
- Maximum output current: 10 A rms
- Wi-Fi
- Chipset: ESP8266 Wi-Fi chip in an ESP-WROOM-02 module
- Security: ATECC508A crypto-authentication module - for generating access keys and verifying commands from authorized clients
- Hardware Interfaces
- External switch and step-clock
- I2C
- SPI
- UART
- GPIO
- ADC
- Software
- Completely open source
- Browser-based configuration tool
- HTTP(S) JSON RESTful interface
- Low-latency TCP & UDP API
- Python library
- Physical Dimensions
- Weight: 1.25 oz (35 g)
- Board size: 3" x 2.25" (76 mm x 63.5 mm)
Pinout
Comparisons
| Wi-Fi Stepper | Tarocco | OpenMYR | uStepper S | |
|---|---|---|---|---|
| Input Voltage | 9-80 V | 36 V | 8-14 V | 8-42 V |
| Output Current | 10 A | 10 A | 2 A | 2 A |
| Step Controller | Included | Needed | Included | Included |
| NEMA Sizes | Any | Any | 17 | 17/23 |
| Open Source Hardware & Software | Yes | Yes | Yes | Yes |
| Development Environment | ESP8266 | N/A | ESP8266 | Arduino |
| Wi-Fi | Yes | No | Yes | No |
| Security | Crypto Chip | N/A | No | N/A |
| Encoder Feedback | No | Yes | No | Yes |
| I/O Expandable | Yes | No | Yes | Yes |
Easy Control
To help you get started, we’ve written a web application that allows you to start moving within minutes of plugging in your motor. You can adjust any configuration setting, test simple motion commands, and generate example code all from the Quickstart dashboard interface.
Servo Control
Drag and edit servo position quickly and intuitively or enter in precise angles. View openloop position feedback and manage step sizes.
Quickstart guide servo mode control pane
Speed Control
Set RPM and visualize speed. Manage hard stop (active bridge) and soft stop (high impedance bridge) settings. Enable stop on switch engagement (for E-Stop or homing).
Step Clock Input
Use an external motion driver to control the motor. Direction configuration can be tied to switch input.
Quickstart guide stepmode mode control pane
Configuration
Specify safety limits, speed profiles, torque settings, and speed optimization. With advanced configuration, you can manage current and voltage waveform generation, back EMF compensation, stall detection, and more.
Quickstart guide configuration pane
Quickstart guide advanced configuration pane
Code Generation
Once you’ve dialed in your motor, generate configuration and motion commands that match the quickstart settings.
Quickstart guide code generation pane
Support & Documentation
We love open source! All of our software, hardware, documentation, everything is MIT license free(dom).
