Description: 1. The ULN2003 Stepper Motor Driver Module is a versatile and widely-used electronic component designed to control the rotation of stepper motors in various projects and applications. 2. It features 4 independent full H-bridge driver circuits, allowing for precise control of two unipolar or bi-polar stepper motors with four wires each. 3. The module can handle a maximum voltage of 35VDC and a maximum current of 1.67A per channel, making it suitable for low to medium power applications. 4. It includes an enable pin (EN) for each motor to independently turn them on or off, as well as a common /INH pin that can be used to disable all motors when not in use. 5. The ULN2003 features built-in flyback diodes to protect the driver circuits from voltage spikes caused by inductive stepper motor coils during operation. 6. With its compact size (1.6 inches long x 2 inches wide), this driver module can easily be integrated into various IoT projects, making it a popular choice for hobbyists an
| Specification | Details |
|---|---|
| Type | Darlington Transistor Array |
| Package | DIP-16 (Dual In-line Package) |
| Voltage Input | 0 - 20V up to 40V for high speed |
| Current Output | Up to 500mA per channel |
| Stepper Motor | Supports Nema 17 and other motors |
| Step Angle | Variable typically 1.8° or 0.9° |
| Pulse Width | 1 - 100 μs variable pulse width |
| Operating Mode | Synchronous Asynchronous (Half Step) |
| Temperature Range | -20°C to +80°C |
| Storage Temperature | -40°C to +150°C |
| Supply Current | Typically 2.5 mA at 1V supply |
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