12A 300W DC-DC Buck Converter Step down Power Module 7-32V to 0.8-28V

7Semi DC Buck Converter Breakout 3.3V 2A Out (AP62301) (BO-10131) The 7Semi DC Buck Converter Breakout 3.3V 2A Out (AP62301) is a compact power module that converts higher DC voltages into a stable 3.3V output with up to 2A current. It accepts a wide range of input voltages, making it useful for powering low-voltage electronics from batteries, adapters, and other DC sources. This makes it ideal for projects that require a reliable 3.3V supply. Built using an efficient synchronous buck converter design, this board delivers dependable power with minimal energy loss and low heat output. The small form factor allows easy integration into your electronics builds, especially space-constrained and portable systems. Whether you’re working on IoT devices, embedded controllers, or sensor systems, this converter provides a simple and efficient power solution for your 3.3V needs. Features: Provides a stable 3.3V output with up to 2A continuous current Accepts a wide DC input voltage range for flexible power sources High-efficiency synchronous buck converter design Low heat generation for efficient and safe power delivery Compact breakout board for easy integration and prototyping Ideal for IoT devices, embedded systems, and battery-powered projects Suitable for powering microcontrollers, sensors, and communication modules

7Semi DC-DC Buck Converter 5V 3A Out - MP2338 (BO-10182) The 7Semi DC-DC Buck Converter 5V 3A Out – MP2338 (BO-10182) is a compact power module designed to step down higher DC voltages to a stable 5V output with up to 3A current. It provides reliable and efficient power for electronics that require a steady 5V supply, such as microcontrollers, sensors, and development boards. Built around the MP2338 step-down converter, this module offers high efficiency and stable performance while minimizing heat and power loss. It supports a wide input voltage range and includes built-in protection features for safe operation. Whether you’re working on embedded systems, IoT devices, or custom electronics projects, this buck converter makes power management simple and dependable. Features: Boosts power efficiency with a high-performance MP2338 buck converter Provides a stable 5V output at up to 3A for reliable powering Wide input voltage range, compatible with various DC sources Compact breakout module for easy PCB or project integration Built-in protection features for safe and stable operation Ideal for microcontrollers, sensors, IoT boards, and embedded systems

3V CR2025 Lithium Coin Battery The CR2032 3V Lithium Coin Battery is widely utilized due to its dependable and long-lasting power supply for a variety of small electronic devices. This cr2032 battery includes calculators, wristwatches, remote controls, various medical devices, fitness gadgets, machines, toys, and others. Featuring a flat top and a 225mAh capacity, the cr2032 battery is a 3V lithium coin battery that's specifically designed for use in miniaturized products. Its plus terminal utilizes manganese dioxide, which is chemically stable, resulting in 90% capacity retention even after a decade of proper storage. Additionally, The battery organic electrolytes are resistant to leakage when exposed to environmental changes. Features High and Stable voltage (3V) A full lineup for use in a wide variety of applications No mercury added Useful in a wide range of temperatures (-30°C to +60°C) The very high weight-to-power ratio Manganese dioxide material High capacity Long Lasting life. Low self-degradation rate and superior storability 0.2mA continuous standard drain High leak protection and hence no oxidation damage in devices, so it can be used in any expensive Gadget with superior safety. Resistance to continuous discharge and hence Very low self-discharge; Note: These batteries are Non-Rechargeable. ?Also check 24mm Coin type battery holder available on the Iotcart website. The holder is versatile, accommodating various sizes and shapes of coin cells, with a secure design to withstand shock and vibration. It operates at a voltage rating of 3.3V and finds applications in portable devices, computers, consumer electronics, power management, commercial, and security.

SmartElex 5V/3.3V Power Supply Stick with ON/OFF Switch The SmartElex 5V/3.3V Power Supply Stick with ON/OFF Switch is a compact and efficient regulated power supply module designed to provide reliable power for breadboard-based electronics and prototyping projects. It operates on a 6–12V DC input and delivers a stable, selectable 5V or 3.3V output, making it ideal for powering microcontrollers, sensors, and logic modules. This power supply module features an onboard ON/OFF switch for easy control, a voltage selection switch for flexibility, and a power LED for real-time status indication. To ensure safe operation, it is equipped with a PTC fuse that protects against overcurrent, helping safeguard both the connected components and the module itself. Features: 6-12V input through barrel jack or 2-pin header. The output voltage can be controlled to either 3.3V or 5V. 800mA of operational current. An ON/OFF switch allows for convenient control. Voltage selection switch for 3.3V/5V output. The power status LED provides visual indication. PTC fuse protection against overloads. Breadboard-friendly headers have a 0.1" pitch for simple insertion.

SmartElex 3.3V 1A LM2575S Buck Module The SmartElex 3.3V 1A LM2575S Buck Module is a compact step-down power converter designed to provide a stable 3.3V output from a higher input voltage source. It helps solve common power regulation challenges in electronic projects by ensuring sensitive components receive consistent voltage without overheating or voltage drops. This module is suitable for students, hobbyists, engineers, educators, and startups who need a dependable power solution for embedded systems, DIY electronics, and learning-based projects. This buck module is well suited for use in robotics, IoT devices, automation systems, and general prototyping where a reliable 3.3V supply is required. It can be easily integrated with popular development platforms such as Arduino, Raspberry Pi, and ESP32 to power sensors, communication modules, and controllers. The simple design and dependable performance make it easy to add to both experimental setups and final products, helping users focus on functionality rather than power stability. Note: Ensure proper heat dissipation to avoid overheating during high-power output. Suitable for applications requiring a stable 3.3V power source. Ideal for powering devices in the 3.3V range with 1A current draw. Features: Wide input voltage support from 7V to 40V DC Fixed and stable 3.3V output for low-voltage electronics Delivers up to 1A output current for reliable power delivery High efficiency design helps reduce heat and power loss Built-in protection against overcurrent, overheating, and short circuits Compact and durable module for easy integration into projects Applications: Battery-powered devices needing efficient step-down voltage regulation Power supply for sensors, communication modules, and peripherals Suitable for Arduino, Raspberry Pi, ESP32, and other microcontrollers Low-power LED lighting and small DC-powered electronics Ideal for DIY electronics, learning projects, and prototyping setups

SmartElex Serial Bus Servo Driver Board, Integrates Servo Power Supply and Control Circuit The SmartElex Serial Bus Servo Driver Board is an advanced Servo Driver Board designed to simplify high-density servo control in robotics applications. It integrates a reliable Servo Power Supply and intelligent Control Circuit, allowing seamless communication with your MCU or host system through a single UART interface With sufficient external power, the board can manage up to 253 ST/SC-series serial bus servos, each capable of delivering detailed feedback such as position angle, load, operating voltage, temperature, and working mode. This centralized control approach minimizes wiring, saves space, and ensures precise, synchronized motion, making it an excellent choice for complex robotic systems and professional-grade automation projects. Features: Supports a serial UART interface to the MCU/host for servo control. Drives up to 253 ST/SC series serial bus servos concurrently. Onboard DC power supply (9V to 12.6V) for the servo rail. Servo feedback includes angle, load, voltage, mode, temperature, and error. Integrated control circuit for reliable operation and signal integrity. Jumper or switch to choose between UART and USB connection modes. Compact PCB footprint (approx. 42 x 33 mm) for confined places. Dual power inputs: DC barrel jack and screw terminal choices.

5V WiFi Smart Relay Module for IoT & DIY Projects The 5V WiFi Relay Module is a smart control board that lets you switch electrical devices on and off using a WiFi connection. It works with standard 5V power and can be connected to home networks, allowing remote control of lights, fans, appliances, and other devices through your smartphone or automation system. This module is designed for easy integration with DIY electronics and smart home projects. It provides reliable switching performance and can be used in both residential and hobby automation setups. Whether you’re building a custom smart switch or adding wireless control to your gadgets, the 5V WiFi Relay Module offers a simple and flexible way to make your devices connected and controllable over WiFi. Features: Operates on 5V power supply for easy integration Enables wireless ON/OFF control of electrical devices over WiFi Suitable for smart home and IoT automation projects Supports remote switching via mobile app or automation system Reliable relay-based output for controlling loads safely Compact module design for DIY electronics and embedded systems Ideal for controlling lights, fans, pumps, and appliances

CHAM CMINR14500F2 1000mAh 2C 3.6V AA Rechargeable Li-ion Battery Introducing the CHAM CMINR14500F2 rechargeable Li-ion battery – a compact, single-cell AA-sized power source delivering 3.6 volts at 1000mAh. Designed for projects that require a reliable 3.76V high-capacity supply, this battery is perfect for powering portable devices such as flashlights, hobby transmitters, and receivers. This Li-ion battery also serves as an excellent replacement for standard non-rechargeable AA batteries, making it a cost-effective and efficient option for applications like RC transmitter/receiver remotes. The versatile lithium ion battery terminals are compatible with many adapters or holders, or they can be permanently soldered to your device’s wiring for seamless integration. Important Guidelines: Avoid Deep Discharge: Do not let the Li-ion battery drop below 2.5V under load. Initial Charge: Fully charge to 4.2V before the first use. Metal and Magnets: Keep any metal moving parts or magnets away from both the positive (top) and negative (bottom) contacts. Proper Installation: Never force the battery into its compartment. Battery Pairing: Do not mix old and new battery cells. Charger Quality: Always use a reliable, high-quality battery charger. Heat Exposure: Keep the battery away from high temperatures. Prevent Short-Circuiting: Avoid connecting the positive (top) and negative (bottom) terminals directly. Safe Storage: When not in use, store the battery in its plastic holder or another insulating container. Charging Voltage: Do not exceed 4.22V during charging—this is another reason to choose a quality charger. Supervised Charging: Never leave the battery charging unattended. Long-Term Storage: Do not store the battery fully charged for extended periods. Optimal Storage Conditions: Store in a cool, dry place at about 3.7V (the recommended storage charge). Post-Discharge Care: Recharge the battery as soon as possible after it has been discharged. User Knowledge: Ensure you are well-informed about proper Li-ion battery discharging, charging, assembly, handling, and storage before use. Features Form Factor: Cylindrical Battery Type: Lithium-Ion Performance: High efficiency with substantial capacity Design Feature: Flat top for compatibility with a wide range of devices

7Semi DC-DC Buck Converter 7V-40V Input to 5V 5A Output- AP64500 (BO-10188) The 7Semi DC-DC Buck Converter 7V–40V Input to 5V 5A Output – AP64500 (BO-10188) is a high-power voltage regulator module designed to convert higher DC input voltages into a stable 5V output with up to 5A current. Its wide input range makes it suitable for many power sources, including batteries and industrial supplies, where reliable 5V power is needed. Built around the efficient AP64500 synchronous buck converter, this module delivers stable output with low heat and high efficiency, even under heavy load. It is well suited for powering microcontrollers, single-board computers, sensors, and communication modules. Whether you’re building robotics, automation systems, or advanced electronics projects, this buck converter provides dependable and efficient power management. Features: Wide input voltage range: 7V to 40V DC Stable 5V output with up to 5A continuous current High-efficiency synchronous buck converter using AP64500 Low thermal loss and reliable performance under load Compact breakout module for easy project integration Built-in power protection features for safe operation Ideal for microcontrollers, SBCs, IoT and embedded systems Suitable for robotics, automation, and power supply projects

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

7Semi DC Buck Converter Breakout 3.8V 2A Out (AP62301) (BO-10132) The 7Semi DC Buck Converter Breakout 3.8V 2A Out (AP62301) (BO-10132) is a compact power module designed to step down higher DC voltages to a stable 3.8V output with up to 2A current. It supports a wide input voltage range, making it suitable for use with batteries, adapters, and other DC power sources in low-voltage electronics. Built on an efficient synchronous buck converter design, this module delivers reliable power with minimal heat and energy loss. Its small size makes it ideal for space-constrained projects such as IoT devices, embedded systems, and portable electronics. Whether you’re prototyping or building a final product, this buck converter offers a simple and dependable power solution. Features: Provides stable 3.8V output at up to 2A continuous current Accepts a wide DC input range for flexible power sources High-efficiency synchronous buck converter design Low heat generation for efficient power use Compact breakout board for easy integration Ideal for IoT, battery-powered, and embedded electronics Suitable for microcontrollers, sensors, and small devices

Dual Micro USB 18650 LiPo DIY Power Bank Module (3.7V to 5V, 2A Output) The Dual Micro USB 18650 LiPo DIY Power Bank Module is designed to convert a 3.7V 18650 lithium battery into a stable 5V output with up to 2A current, making it perfect for charging smartphones, IoT devices, and other USB-powered gadgets. At its core, this module functions as a compact power management and boost conversion board, allowing you to build a fully customized portable power bank. It features dual Micro USB ports for convenient charging and integrated LED indicators to display charging and power status. Ideal for DIY enthusiasts, makers, and electronics hobbyists, this board gives you the flexibility to create your own reliable mobile power solution—provided you have basic electronic assembly knowledge. When installing items, it is important to keep the following in mind: Batteries can be connected in parallel with a voltage ranging from 3.2 to 4.2V, including 18650 flat and polymer batteries. We can connect the battery to the motherboard B + negative-, which is installed against the burning motherboard. Batteries that are new and old, or that have contradictory model brands, cannot be mixed. Features: Four-level LED bulb displays power, not working situation intelligent automated shutdown. The built-in lithium battery protection IC, overcurrent, overpressure, and undervoltage protection Dual USB output ports. Input requirements: 5V constant voltage power supply can charge input power, the most matching charger for 5V 1A or above. Requirements for rechargeable batteries: Compatible batteries include 18650 batteries, cell phone batteries, flat-panel batteries, MP3 batteries, and polymer lithium batteries ranging from 3.7V to 4.2V.

SmartElex TPS63060 5V USB Buck-Boost Module – 500mA The SmartElex TPS63060 5V USB Buck-Boost Module – 500mA is a compact and high-efficiency buck boost module designed to provide a stable 5V output from input voltages ranging from 3V to 12V. Powered by a 2A internal switch, this 5V buck boost converter can deliver up to 500mA from a 3V source and at least 1000mA from a 12V source, making it ideal for battery-powered and portable electronics. Its synchronous operation allows complete output disconnection using the Enable pin, ensuring zero output power consumption when disabled. With over 90% efficiency, low heat generation, and ultra-low quiescent current (5mA enabled, 20µA disabled), it is well-suited for USB-powered DIY projects, embedded systems, and efficient power management applications. Features: Wide input voltage range: 3 to 12 VDC. Stable 5V DC Output: Produces a stable 5V output. 500mA Output Current: Provides up to 500mA of current. Buck-Boost Conversion: Provides a stable output despite swings in input voltage. Universal Power Supply: Ideal for a variety of portable tasks. Battery Pack Conversion: Converts battery packs into 5-volt USB power sources. Ideal for Variable Voltage: Designed to work with fluctuating or unknown battery voltages.

SmartElex 5V 1A LM2575S Buck Converter Module The SmartElex 5V 1A LM2575S Buck Converter Module is a compact step-down power solution designed to provide a stable 5V output from a higher DC input source. It helps solve common power regulation issues in electronic projects by ensuring consistent voltage delivery to sensitive components. This module is suitable for students, makers, engineers, educators, and startups who need a reliable and easy-to-use power module for embedded systems, learning projects, and everyday electronics development. This buck converter module is ideal for powering microcontrollers, sensors, communication modules, and peripherals used in robotics, IoT devices, automation systems, and general prototyping. It can be easily integrated into projects using platforms such as Arduino, Raspberry Pi, and ESP32, making it convenient for both experimentation and final builds. The dependable performance and simple integration allow users to focus on application development without worrying about unstable power supply. Note: Ensure adequate heat dissipation during high power output. Suitable for powering devices that require a stable 5V power supply. Ideal for circuits and projects that need a 5V stable output with 1A current draw. Features: Wide input voltage support for flexible use across projects Fixed and stable 5V output for low-power electronics Delivers up to 1A output current for reliable performance Efficient switch-mode design to reduce heat and power loss Compact and sturdy module for easy integration Built-in protection against overcurrent, overheating, and short circuits Applications: Power supply for Arduino, Raspberry Pi, ESP32, and other controllers Supplying 5V power to sensors, modules, and peripherals Battery-powered devices needing efficient step-down conversion LED lighting and small DC-powered systems DIY electronics projects and prototyping setups

Holybro PM07 Power Module (14S) The Holybro PM07 Power Module (14S) is a robust and reliable power module designed to deliver clean, regulated power to your drone’s flight controller and onboard electronics, supporting up to 14-cell LiPo battery configurations. Engineered for high-current UAV applications, this module provides accurate real-time voltage and current monitoring, helping ensure safe operation while protecting sensitive components from electrical faults. Its efficient power delivery and dependable performance make it an essential component for advanced drone builds and professional UAV platforms. Built to simplify wiring and enhance system reliability, the Holybro PM07 Power Module integrates seamlessly with popular flight controllers, reducing clutter and improving overall power management. Whether you’re developing high-performance multirotor drones, autonomous platforms, or research UAVs, this power module offers consistent energy supply, precise monitoring, and improved safety for extended flight operations, giving you confidence in both performance and durability. Please Note: The XT60 Plug and 12AWG wire that are pre-soldered on the board is rating for 30A continuous current and 60A burst current (< 60 Seconds). If a higher current is being used, the plug type and wire size should be changed accordingly. You can refer to this chart for reference. This PM02 Power Module uses analog data output and is not compatible to the Pixhawk 5X & 6X (Requires a digital PM like PM02D). Features: High-capacity power module designed to support up to 14S LiPo batteries for advanced UAV applications. Delivers clean and stable power to flight controllers and onboard electronics. Provides accurate real-time voltage and current sensing for improved flight safety. Built for high-current handling in professional and heavy-lift drone platforms. Reduces wiring complexity with an integrated power and monitoring solution. Ideal for multirotor drones, autonomous UAVs, and research-grade aerial systems.