A4988 Stepper Motor Driver Module with Heat Sink For 3D Printer (Green) 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 Arduino Breadboard jumper wires batteries or power supply Features: Automatic current decay mode detection/choice. Mixed with slow current decay mode. The low power dissipation of synchronous rectifier. Internal UVLO(ultra voltage lockout). Crossover current protection. Thermal shutdown circuit. Ground fault protection. Loading and short circuit protection. The optional five-step mode: full, 1/2, 1/4, 1/8, and 1/16.

A4988 Stepper Motor Driver Module with Heat Sink For 3D Printer (Red) A4988 Stepper Motor Driver is a complete micro-stepping motor driver with a built-in translator for easy operation. The product can be full, half, 1/4, 1/8, and 1/16 step mode to operate bipolar stepper motor output drive capacity of up to 35 V and ± 2 A. A4988 includes a fixed off-time current regulator, the regulator can slow or mixed decay mode. The converter is the key to the easy implementation of the A4988. In inputting one pulse on the STEP input drives the motor one micros tep. No phase sequence tables, high-frequency control lines, or complex interfaces to programming. A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened. The micro-step operation, the chopping control in the A4988 automatically selects the current decay mode (Slow or Mixed). In the mixed decay mode, the device is initially set to fast decay in the part of the fixed off-time, then a slow decay in the rest of the downtime. Mixed-decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry to improve the pulse-width modulation (PWM) power consumption when operating. Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO) and crossover current protection. Special power-Sort. If you want to control the stepper motor with this motor driver, you will need a few essential components like Arduino , breadboard, jumper wires, batteries, and power supply. Features: Simple step and direction control interface Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step Automatic current decay mode detection/choice. Mixed with slow current decay mode Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates check out : Stepper Motor Driver Expansion Board

A6 GSM Module The GPRS Pro Serial A6 GPRS GSM Module Core DIY Development Board is a professional-grade development board that allows you to create your own IoT projects using the GPRS A6 module. The board supports dual-band GSM/GPRS networks and can be used to send and receive SMS messages, make and receive phone calls, and connect to the internet using GPRS. The board is small and compact, making it ideal for portable projects, and it has a low power consumption, so you can use it for extended periods of time without having to worry about running out of power. The board communicates with a microcontroller via UART port and supports a variety of commands, including GSM 07.07, GSM 07.05, and Ai-Thinker enhanced AT Commands. Features: Supports quad-band GSM/GPRS networks (850/900/1800/1900MHz) Working voltage: 4.8-9VDC Working current: maximum of 2A Sleep current: 5mA Onboard Micro SIM card holder Onboard Micro USB interface for external power supply Communication interface: TTL serial port / RS232 serial port Baud rate: 115200bps and it can also be set by AT command Interface logic voltage: 3.3V Can make and answer phone calls using a headset and electret microphone Can send and receive SMS messages Can send and receive GPRS data (TCP/IP, HTTP, etc.) Can be used to test the Ai-Thinker GPRS A6 module Pin pitch: 2.54mm Onboard antenna interface: SMA and IPX The GPRS Pro Serial A6 GPRS GSM Module Core DIY Development Board is a powerful and versatile tool that can be used to create a wide variety of IoT projects. If you're looking for a way to add cellular connectivity to your project, the GPRS Pro Serial A6 GPRS GSM Module Core DIY Development Board is a great option.

A7670C GSM 4G Breakout Board - ADIY The A7670 series is the LTE Cat 1 module that supports wireless communication modes of LTE-TDD/LTE-FDD/ GSM/GPRS /EDGE. It supports a maximum 10Mbps downlink rate and a 5Mbps uplink rate. The A7670 series adopts an LGA form factor and is compatible with SIM7000/SIM7070 series(NB/Cat Modules), and SIM800A/SIM800F(2G modules), which enables smooth migration from 2G/NB/Cat M products to LTE Cat 1 products, and greatly facilitates more compatible product design for the customer needs. The A7670 series supports multiple built-in network protocols, supports drivers for main operation systems(USB driver for Windows, Linux, and Android, etc.), and software function, AT commands are compatible with SIM7500/SIM7600 series modules. Meanwhile, the A7670series integrates main industrial standard interfaces, with powerful expansibility, including abundant interfaces such as UART, USB, I2C, and GPIO, which is suitable for main IOT applications such as telematics, surveillance devices, POS, industrial routers, and remote diagnostics etc. Pinout: Pinout A7670C GSM 4G Breakout Board Features: Serial interface Based on the SIMCOM A7670C LTE modem Supports LTE-TDD/LTE-FDD wireless communication modes Maximum downlink rate of 10Mbps and uplink rate of 5Mbps Compact size Applications: IoT applications Telematics Surveillance Devices POS, Industrial Routers Remote Diagnostics

AA 4-Cell Battery Holder – Hard Plastic 6V Battery Case with Wire Leads This AA 4-Cell Battery Holder is a durable and reliable power solution designed to securely hold four AA batteries and deliver a stable 6V output. Built from high-quality hard plastic, it ensures long-lasting performance and is ideal for DIY electronics, school projects, robotics, LED circuits, Arduino-based builds, and small hobby devices. Its compact size and lightweight design make it easy to integrate into any enclosure or prototype. The holder includes pre-attached wire leads, making soldering or connecting to breadboards fast and convenient. Whether you're assembling a small electronic project, building battery-powered gadgets, or replacing a damaged battery case in a device, this 4-cell AA battery holder provides a dependable and easy-to-use power source. Its secure cell grip keeps the batteries firmly in place, preventing loose connections during operation. Features: Holds 4 AA batteries, providing a stable 6V DC output for electronics and DIY projects. Built with hard, durable plastic to ensure long-term reliability and secure battery placement. Comes with pre-soldered wire leads for easy connection to Arduino, breadboards, or circuits. Lightweight and compact design makes it suitable for robotics, small appliances, and prototyping. Provides firm battery retention to avoid shaking or disconnection during movement or vibration. Ideal for hobbyists, students, and makers working on low-voltage portable power applications.

AA Battery AA batteries are common in portable electronic devices. An AA battery is composed of a single electrochemical cell that may be either a primary battery (disposable) or a rechargeable battery .

AA Zinc Panasonic Special Battery The Panasonic AA Zinc Special Battery is an affordable and dependable power source designed for everyday low-drain devices. Made with Panasonic’s trusted build quality, this zinc-carbon AA cell delivers consistent output for home and office essentials like wall clocks, TV remotes, torches, toys, and basic electronic gadgets. Perfect for users who need a cost-effective battery for regular use, it provides stable performance, a good shelf life, and easy installation. This makes it a practical choice for households, students, small businesses, and hobby enthusiasts who want reliable power without the high cost of premium batteries. Features: Zinc-carbon chemistry for economical, everyday use Designed for low-drain household and office devices Stable power output for clocks, remotes, toys, and torches Lightweight and easy to install in AA-compatible gadgets Reliable build quality from Panasonic for consistent performance Long shelf life for storage and backup power needs

AC 220V 10000W 80A Digital Control SCR Electronic Voltage Regulator This voltage regulator has a new two-way large power silicon controlled rectifier and the current can be up to 80A, which is a good solution to the over-current of electric stove wire caused by low resistance during cooling.- This voltage regulator can easily adjust the output voltage. It could be widely used as heat controller on electric stoves, water heaters, light dimmer on lamps, speed controller on small motors, or temperature controller on the electric soldering iron, etc

AC/230V - 35mm 230V AC Continuous Buzzer A buzzer is a small yet efficient component to add sound features to our project/system. It is very small and compact 2-pin structure hence can be easily used on breadboard, Perf Board and even on PCBs which makes this a widely used component in most electronic applications. There are two types of buzzers that are commonly available. The one shown here is a simple buzzer which when powered will make a Continuous Beep. Sound due to the internal oscillating circuit present inside it. But, the one shown here is most widely used because it can be customized with help of other circuits to fit easily in our application. Read our blog on Buzzer Arduino detailing step by step guide about how to use the buzzer with your Arduino board. Applications: Electrical alarms Educational purposes Security applications Electronic Metronomes Household applications Also check the Passive Buzzer Module available on the Iotcart website. it is designed for versatile applications in electronic projects. The module produces adjustable tones ranging from 1.5 to 2.5 kHz and is compatible with Arduino and other microcontrollers, featuring easy installation with a pin pitch of 2.54mm and fixed bolt holes.

AC230V 25W Soldering Iron If you are a student or hobbyist and looking for an excellent general-purpose Soldering Iron, this 25-watt soldron Soldering Iron is perfect. Even we have been using this Solder Gun from the start and it is the best that you can get at this price range.  Fast heating capacity(Attains full operating temperature within seconds) maintains a stable temperature and delivers high temperature at the tip minimizing the heat leakage. Applications: PCB assembly & repair Electricals soldering Textile cutting Jewellery.