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Stepper Driver A4988 Module with Heat sink buy in Pakistan
PKR 240
Stepper Driver A4988 Stepper Motor Driver Module with Heatsink
Low RDS (On) Output
Automatic current decay mode detection / selection
Mix with slow current decay modes
Synchronous rectification for low power dissipation
Internal UVLO
Cross-current protection
3.3 and 5 V compatible logic supply
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 enhanced thermal dissipation. This package is Pb (suffix-T), with 100% matte tin leadframe plating.
Features and Benefits: 1. Low RDS (On) Output 2. Automatic current decay mode detection / selection 3. Mix with slow current decay modes 4. Synchronous rectification for low power dissipation 5. Internal UVLO 6. Cross-current protection 7. 3.3 and 5 V compatible logic supply 8. Thermal shutdown circuitry 9. Ground fault protection 10. Load short-circuit protection 11. Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16
Using Atmel Atmega328P - AU microcontroller
digital input/output port RX and TX, D2 ~ D13, A0 ~ A5
8 analog input port A0 ~ A7
Support serial download
16 MHZ clock frequency
Used CH340G repalce the CP2102.
Open-source, Interactive, Programmable, Low cost, Simple, Smart, WI-FI enabled
FOR Arduino like hardware IO
Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
Code like FOR arduino, but interactively in Lua script.
Nodejs style network API
Event-driven API for network applicaitons,
which faciliates developers writing code running on a 5mm*5mm sized MCU in Nodejs style.
Greatly speed up your IOT application developing process.
Lowest cost WI-FI
WI-FI MCU ESP8266 integrated and esay to prototyping development kit.
We provide the best platform for IOT application development at the lowest cost.
13.56MHz contactless communication card chip
Low-voltage, low-cost, small size of the non-contact card chip to read and write
Smart meters and portable handheld devices developed better choice
The MF RC522 use of advanced modulation and demodulation concept completely integrated in all types of 13.56MHz
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