A4988 is a complete microstepping motor driver with built-in translator for easy operation. This product is available in full, half, 1/4, 1/8 and 1/16 step modes operate bipolar stepper motors, output drive capacity of up to 35 V and ± 2 A. A4988 includes a fixed off-time current regulator, the regulator in slow or mixed decay modes. A4988 converter is the key to the easy implementation. As long as the “step” input inputting one pulse drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened.
In the micro-step operation, A4988 chopping control inside automatically selects the current decay mode (Slow or Mixed). In mixed decay mode, the device is initially set to a fixed downtime in some fast decay, then the rest of the slow decay downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power sequencing.
A4988 surface mount QFN package (ES), a size of 5 mm × 5 mm, nominal overall package height of 0.90 mm, with an exposed pad for
Features
Compliant with most standard receiver connector: Futaba, Hitec, Sanwa, GWS etc...
Great for truck, Boat, Racing Car, Helicopter and Airplane.
Power Supply: Through External Adapter.
Stable and Shock Proof. - Coreless Motor - Metal Gear - Double Ball Bearing -
Connector Wire Length 300mm
Power supply voltage: VM = 15V max, VCC = 2.7\u20135.5V
Output current: Iout = 1.2A(average) / 3.2A (peak)
Standby control to save power
CW / CCW / short brake / stop motor control modes
Built-in thermal shutdown circuit and low voltage detecting circuit
All pins of the TB6612FNG broken out to 0.1" spaced pins
Filtering capacitors on both supply lines
Pre-soldered headers
Material: brass
Inner diameter: 2/4/5/6/7mm
Hexagon side length: 7mm
Diagonal distance: 13.6mm
Distance across flat: 12mm
Total height: 18mm
Cylinder part height: 12mm
Out diameter of cylinder part: 11mm
These black plastic wheels are designed specifically for use with our FEETECH FS90R Servo. The wheels have silicone tires and measure 60 mm (2.36?) in diameter.Four additional mounting holes for 4-40 screws make it possible to use the wheel with several of our universal mounting hubs.
