Amazing product
I bought it for my CNC plotter, and it works great. It's cheaper than other shields. I highly recommend buying this one.
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The A4988 driver Stepper Motor Driver is a complete micro-stepping motor driver with a built-in converter, easy to operate. It operates from 8 V to 35 V and can deliver up to approximately 1 A per phase without a heat sink or forced air flow (it is rated for 2 A per coil with sufficient additional cooling).
A4988 driver Stepper Motor Driver includes a fixed off-time current regulator, the regulator can be in slow or mixed decay mode. The converter is the key to the easy implementation of the A4988.
There are no phase sequence tables, high-frequency control interface programming, etc. The application of the A4988 interface is very suitable for a complex microprocessor is not available or overloaded. In the stepping operation, the chopping control in the A4988 automatically selects the current decay mode (slow or mixed). The mix decay current control scheme can reduce the audible motor noise, increase step accuracy, and reduce power consumption.
Provide internal synchronous rectification control circuitry, in order to improve the pulse width modulation (PWM) power consumption during operation.
Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO), and crossover current protection. Don’t need special power-up sequencing. A4988 uses a surface mount QFN package (ES), the size is 5 mm × 5 mm, nominal overall package height is 0.90 mm, with an exposed thermal pad to enhance the heat dissipation function.
If you want to control the stepper motor with the stepper motor driver, for that you will need a few essential components like
Input Supply Voltage (VDC) | 8 ~ 35 |
Operating Current (A) | 1.0A(No Heatsink ), 2.0A (with Heat-Sinking) |
Logic Input (V) | 3 ~ 5.5 |
Modes of Operation | full, 1/2, 1/4, 1/8, and 1/16. |
Driver Size | 20 x 15mm / 0.78 x 0.59" |
Heat Sink Size | 5 x 5mm |
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I bought it for my CNC plotter, and it works great. It's cheaper than other shields. I highly recommend buying this one.
good customer service
good product
Great for the money
I’ve only been used if this for one day and this thing is a beast in my mind. I can be quite rough with it and boy did it hold up great. I do recommend this item