74LS47 - BCD to 7-Segment Decoder/Driver IC The 74LS47 accepts four lines of BCD (8421) input data, generates their complements internally and decodes the data with seven AND/OR gates having open-collector outputs to drive indicator segments directly. Each segment output is guaranteed to sink 24 mA in the ON (LOW) state and withstand 15V in the OFF (HIGH) state with a maximum leakage current of 250 µA. Auxiliary inputs provided blanking, lamp test and cascadable zero-suppression functions. Pinout: Pinout of 74LS47 IC

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75 pcs-lot different type mini gear Plastic Gear Set Gears are incredibly useful - they can be used to create custom gearboxes to transfer motion, change output shaft speed, increake torque, and any number of other gear like functions. Different types of gears have different purposes and this kit has a great assortment of regular gears, crown gears, worm gears, linear gears, double reduction gears, and even a few pulleys to experiment and create with. These gears are used in laboratories, science education, and DIY models and RC-airplane/helicopter repair, as well as many household repairs like old music system etc. its a great toolkit for promoting DIY abilities, improving children's, teen's hands-on skills and divergent thinking. The great tools for all kinds of DIY cars, robots, model making accessories Great kit bag for promoting DIY ability,the most complete gear set, includes 64 kinds of gear parts. It can meet your DIY needs Small parts. Not for children under 3 years.

76MHz-108MHz Wireless Stereo FM Radio Kit This DIY electronics kit is perfect for both electronics hobbyists and beginners. The Wireless Stereo FM Radio Receiver Module PCB DIY Electronic Kits 76MHz-108MHz Kit has been optimized for easy element arrangement and high success rates during manufacturing and installation. It has even been used in schools, so its performance is trusted. This RF kit is not just a simple welding assembly. It allows for hands-on adjustment of the coiled-coil and more fun than other simple assembly kits. The main advantage of using a headset is that it takes into account the noise in student classrooms. The FM radio program provides rich and good sound quality, making it possible to launch your own FM radio station. The kit includes an FM scan radio pocket computer using special blocks, including the RDA5807FP FM radio module, a 16-pin dual flat package, and a working voltage of 1.8-3.6V. The circuit includes an FM radio receiver from the antenna to the frequency discriminator output audio signals, with features like a search tuning circuit, a signal detection circuit, a mute circuit, and a compression frequency offset of the frequency-locked loop (FLL) circuit. The IF frequency of the circuit is designed to be 70KHZ, with peripheral circuits without an intermediate frequency transformer. The frequency is selected by an internal RC circuit IF filter to complete. The circuit also includes digital radio tuner buttons for electrical tuning (SEEK +, SEEK-) and volume control buttons (VO). Get started with electronics and DIY radio with this Electronic kit for beginners. Features Functional and high quality, Receives at 76MHz - 108MHz The perfect DIY and practice kit for hobbyist and electronic professionals An excellent tool to educate young pioneers. Applications DIY kit for building a wireless stereo FM radio receiver Can receive frequencies between 76MHz and 108MHz with stereo sound Easy to assemble, suitable for educational or DIY projects Once assembled, can be used to listen to FM radio stations Available for purchase on Amazon and other online retailers

Circuits requiring steady 6v supply

7809 Voltage Regulator (Pack of 5) The LM7809 monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply Specification RoHS Compliant - Category : Linear Regulatr Package Type: TO-220

7812 Voltage Regulator IC The 7812 IC is a commonly used linear regulator.  Input voltage can range from 12 – 35VDC and it outputs a fixed 12V at over 1A of current and up to 2.2A of surge current. For basic operation, no external components are required. Just hook up the input voltage and ground of the 7812 voltage regulator and you have 5V available on the output. If you are using it at a fair distance from the supply that is providing the input voltage, then a .33uF or larger input filter capacitor is recommended. The part ideally should be a low ESR part such as a Tantalum or Mylar capacitor, but small electrolytic caps generally work fine. Pinout: Pinout of 7812 Voltage Regulator IC Applications: Electronic Communications. LEDs and Flashlights. Load Switches. Electrical Power Supplies. Also check the LM317 Adjustable Voltage Regulator IC available on Iotcart. The LM317 provides a stable, regulated output voltage in the range of 1.2V to 37V and can be adjusted using external resistors. It has a maximum continuous output current of 1.5A, a typical dropout voltage of 1.5V, and operates over a wide range of input voltages (3V to 40V) and temperatures (-40°C to 125°C). The IC features built-in current limiting, thermal shutdown protection, and short-circuit protection. Also check the 7806 Voltage Regulator IC available on the Iotcart website. It operates at an input voltage of 5V, with a maximum input voltage of 35V and a maximum output current of 1.5A. The standby current is 5mA.

7Semi 0.5mm FFC FPC Connector Breakout Board (20 Pin) The 7Semi 0.5 mm FFC FPC Connector Breakout Board (20 Pin) is designed to make working with fine-pitch flat cables simple and dependable. Built around a 20-pin FPC connector with an exact 0.5 mm pitch and 2 mm height, it provides stable signal breakout from FFC/FPC cables to standard 0.1" headers. The front-flip, bottom-contact SMT connector ensures firm cable retention and long-term durability, while the breadboard-friendly pin layout allows fast testing without extra adapters. With clearly marked pin numbers, this breakout board reduces wiring mistakes and supports efficient prototyping in electronics, IoT, and embedded system projects. Features: 0.5mm pitch FPC FFC connector with 30 pins and a 2mm front flip bottom contact. speeds up the prototyping process. Out pins with traces leading to double rows of 0.1" spaced holes. Compatible pin spacing for breadboard application. Easily recognizable pin numbers Size: 40 x 25 mm

7Semi 0.5mm FFC FPC Connector Breakout Board (30 Pin) The 7Semi 0.5mm FFC FPC Connector Breakout Board (30 Pin) is engineered to simplify interfacing fine-pitch flat cables with standard prototyping setups. Built around a 30-pin, 0.5mm pitch ffc fpc connector, this board features a front-flip, bottom-contact SMT connector with a precise 2mm height, ensuring secure cable insertion and stable signal transmission. The breakout converts the fine-pitch FFC/FPC signals into 0.1″ spaced dual-row output pins, making it fully compatible with breadboards and development boards. With clearly marked pin numbers and reliable PCB soldering, this breakout board is ideal for prototyping, testing, and integrating LCDs, touch panels, embedded systems, and custom electronic interfaces where accuracy and connection reliability are critical. Features: 0.5mm pitch FPC FFC connector with 30 pins and a 2mm front flip bottom contact. speeds up the prototyping process. Out pins with traces leading to double rows of 0.1" spaced holes. Compatible pin spacing for breadboard application. Easily recognizable pin numbers Size: 40 x 25 mm

7Semi 128Mbit SPI Flash Memory Breakout Board - W25Q128JWSIQ The 7Semi 128Mbit SPI Flash Memory Breakout Board – W25Q128JWSIQ is a compact and developer-friendly memory solution designed to simplify data storage in embedded and IoT projects. Built around the reliable Winbond W25Q128JWSIQ IC, this breakout board eliminates the need for delicate chip-level soldering, making it perfect for prototyping and rapid development. With support for Standard, Dual, and Quad SPI modes and clock speeds up to 133 MHz, it delivers fast and efficient read/write performance. The memory is organized into 65,536 pages of 256 bytes, with flexible erase options including 4KB sectors, 32KB and 64KB blocks, and full-chip erase. Its space-saving design and low-power operation make it well suited for embedded systems, portable electronics, and industrial automation applications where reliability and efficiency matter. Features: Solder-free operation: Allows direct access to the flash memory chip without the need for soldering, making development and testing workflows more efficient. High-Capacity Storage: Provides 128Mbit (16MB) of non-volatile storage, ideal for firmware, data logging, or configuration storage in small systems. The SPI and Quad SPI interface supports normal SPI, dual/quad output, and I/O for fast read/write operations at clock frequencies of up to 133MHz. Flexible Erase Options: To manage memory efficiently, do selective erasures with 4KB sectors, 32KB or 64KB blocks, or full-chip erase. Wide Compatibility: SPI allows for easy communication with a variety of microcontrollers and embedded systems, ensuring smooth system integration. Power-efficient design.: Its low power requirements and small footprint make it ideal for portable and low-power applications. SPI Communication uses the following four wires SCK - This is the serial clock driven by the master. MOSI - This is the master output / slave input driven by the master. MISO - This is the master input / slave output driven by the master. CS - This is the slave-selection wire.