Features :

1. Microstep resolutions: full, 1/2, 1/4, 1/8, 1/16, and 1/32.
2. Simple step and direction control interface
3. Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
4. Adjustable current control lets you set the maximum current output with a potentiometer. Hence lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
5. Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
6. 45 V maximum supply voltage
7. Built-in regulator (no external logic voltage supply needed)
8. Can interface directly with 3.3 V and 5 V systems
9. Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout
10. Short-to-ground and shorted-load protection
11. 4-layer, 2 oz copper PCB for improved heat dissipation
12. Exposed solderable ground pad below the driver IC on the bottom of the PCB

Features :

1. Automatic current decay mode detection/choice.
2. Mixed with slow current decay mode.
3. The low power dissipation of synchronous rectifier.
4. Internal UVLO(ultra voltage lockout).
5. Crossover current protection.
6. Thermal shutdown circuit.
7. Ground fault protection.
8. Loading and short circuit protection.
9. The optional five-step mode: full, 1/2, 1/4, 1/8 and 1/16.

Controller Board

1. Compact size, easy to install and use.
2. All jumpers hit the ON position to indicate 16 subdivisions (4988) or 32 subdivisions (8825).
3. Jm connection motor: Jv Connects 5V and 12V-24V Power Supply.
4. E /S /D /G of Jc corresponds to Enable /Step /Dir /Gnd driving signal output on the connection respectively.

Features of I2C 16-Channel Servo Driver:

1. micro: bit edge connector, directly pluggable
2. I2C controlled, using only 2 pins
3. Up to 16-Channel servo/PWM outputs, 12-bit resolution for each channel (4096 scales)
4. Integrates 5V regulator, up to 3A output current, can be powered from the battery through VIN terminal
5. Standard servo interface supports commonly used servo such as SG90, MG90S, MG996R, etc.
6. Reserved I2C control pins, allows working with other control boards
7. Comes with development resources and manual (micro: bit graphical examples like Bluetooth/2.4G wireless remote control)

Features:

1. Heavy-duty screw terminal for the input.
2. Can be connected directly to the 433MHz receiver output.
3. Can drive up to 5A of current.
4. Drives 2 motors.