A neodymium magnet attached to the back of the motor shaft, with a magnetic encoder chip, allow for north/south pole tracking of the magnet. With this information, the angle of the stepper motor shaft can be determined. The encoder has a 12bit resolution, so the shaft position can be tracked in steps of 1/4096, this corresponds to a resolution of 0.088 degrees. Because the magnet and encoder chips are fixed, the measured shaft angle will not be reset during power cycles. This enables the uStepper controller to have the ability to perform closed loop regulation of the stepper motor position with a sample frequency as high as 6.6kHz.
Many applications use RC Servos for their actuators, uStepper with it's rotary encoder can replace RC Servos with no mechanical wear that can effect the measured position.
The uStepper has a huge amount of I/O pins available, this allows it to be expanded in so many ways! SPI, UART and I2C interfaces are all available, with the I2C already having the required pull-up resistors.
12 I/O pins are available for expansions, 2 can be used for external interrupts, and 6 can generate PWM Signals. In addition 4 analog pins are available, allowing the processing of external analogue signals using the ADC feature of the microcontroller.
- Compact design, NEMA17 and NEMA23 Mountable.
- Arduino compatible, programmable using an Arduino IDE.
- USB Interface.
- 5V Switch mode regulator, allowing high voltage supply (Max 30V)
- Integrated stepper driver.
- Stepper driver temperature monitoring.
- 12bit magnetic rotary encoder.
- Microcontroller: ATmega328P (16 MHz clock speed)
- Input voltage: 8 – 30V (12-24V Recommended)
- I/O: 5V
- Digital I/O pins: 12 (6 of which provide PWM capability)
- Analog I/O pins: 4
- Up to 2A stepper drive current, potentiometer adjustable.
- Up to 16 x Microstepping (User selectable)
- 12-bit rotary encoder resolution
- uStepper Controller Board
- NEMA17 Mounting Hardware
- Neodymium Magnet with bracket
- (Optional) NEMA17 or NEMA23 Stepper Motor
uStepper has two input power connectors options, either a mounted DC Jack, or mounted Screw Terminal.
If the NEMA23 Motor option is chosen, NEMA23 Mounting hardware is provided in addition to the NEMA17 Mounting Hardware.
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