SN74LS90N IC Decade Counter 4-BIT 14DIP The SN74LS90N is a 4-bit counter IC with a 14-pin setup. It has built-in flip-flops and circuits that allow it to count in different ways, like dividing by two or by five. This makes it useful for counting applications where you need different cycle lengths, such as dividing by ten for BCD (Binary-Coded Decimal) counting. It also has reset and set-to-nine options for more control. The SN74LS90N is a good choice for projects that need reliable counting, timing, or frequency division.

SOIC28/SOP28/SO28 TSSOP28/SSOP28 Adapter PCB Board - 7Semi The 7Semi SOIC28/SOP28/SO28 TSSOP28/SSOP28 Adapter PCB Board is a versatile breakout solution crafted to simplify the use of surface-mount device (SMD) packages in prototyping projects. Designed specifically for SOIC28, SOP28, SO28, TSSOP28 (1.27 mm pitch), and SSOP28 (0.65 mm pitch) packages, this adapter enables seamless integration with breadboards and other standard prototyping tools. It transforms compact SMD components into a more manageable DIP format with 0.1" spaced pin rows, ensuring effortless connectivity and accurate pin identification. With its thoughtful layout, this breakout PCB adapter for ICs dramatically improves prototyping efficiency by making the testing and development of circuit designs quicker and easier. Whether you're an engineer or a hobbyist, the 7Semi Adapter Board is an essential tool that saves time, reduces complexity, and enhances the overall prototyping experience. Features: Breadboard-Compatible Design: Pin spacing matches standard 0.1" (2.54 mm) pitch, making it easy to mount on common breadboards. Clear Pin Identification: Pin numbers and Pin 1 are clearly marked, simplifying accurate connections and reducing setup errors. Optimized Trace Layout: All pins are routed through traces to two rows of 0.1" spaced holes, ensuring robust, reliable, and accessible connections for efficient prototyping.

Soil Moisture Sensor – Plant Watering Alarm Alerter The Soil Moisture Sensor Plant Watering Alarm Alerter is a smart, compact tool designed to help you maintain healthier plants with minimal effort. Simply insert it into the soil near your plant, and the sensor continuously monitors moisture levels using advanced capacitive humidity sensing for improved accuracy and long-term reliability. Whenever the soil gets too dry, the device emits soft chirps to remind you it's time to water. This intelligent sensor also adapts to your environment, it detects ambient light and automatically stays silent in the dark, ensuring it doesn’t disturb you at night. With adjustable alarm sensitivity for different plant types, this moisture alerter is ideal for indoor plants, potted gardens, home growers, and anyone who prefers a hassle-free plant care routine. Features: Uses capacitive moisture sensing for more reliable and long-lasting performance compared to resistive probes. Emits gentle chirps that increase as the soil becomes drier, helping you water at the right time. Built-in ambient light detection ensures the alarm stays silent during nighttime. Adjustable moisture threshold allows customization for different plant types. Simple to use, portable, and perfect for home gardens, indoor plants, and DIY automation setups.

Soil Moisture Sensor Module This is a Soil Moisture Sensor or Soil Humidity Sensor. With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard. Use it in a home automated watering system, hook it up to IoT, or just use it to find out when your plant needs a little care. Installing this sensor and its PCB will have you on your way to growing a green thumb! This soil moisture sensor consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value. Applications: DIY Agriculture Projects. DIY Plant Watering System. Agriculture Horticulture Ecological Environmental Protection Water Resource Management Research and Education Also check the Automatic Plant Watering System Kit includes components such as a relay module, mini water pump, plastic battery storage case holder, jumper wires, vinyl tubing, and a soil moisture detector module. Features: Operating voltage: 3.3V to 5V Dual output mode for accuracy Easy installation with bolt-hole Power (red) and digital output (green) indicators LM393 comparator chip for stability Digital output (D0) for moisture detection Uses two probes to measure soil water content Soil Moisture Sensor pinout Build your Automatic Plant Watering System with Arduino: To download the code Click Here

Soil Moisture Sensor Module This is Soil Moisture Sensor Module or Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, Soil Hygrometer for Ardunio . With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard. The two probes on the sensor act as variable resistors. Use it in a home automated watering system, hook it up to IoT , or just use it to find out when your plant needs a little love. Installing this sensor and its PCB will have you on your way to growing a green thumb! The soil moisture sensor consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value. When there is more water, the soil will conduct more electricity which means that there will be less resistance. Therefore, the moisture level will be higher. Dry soil conducts electricity poorly, so when there will be less water, then the soil will conduct less electricity which means that there will be more resistance. Therefore, the moisture level will be lower. Applications: DIY A griculture Projects. DIY Plant Watering System. Wiring Connection Soil Moisture Sensor Interfacing With Arduino Uno VCC: Connect to 3.3V-5V GND: Connect To GND DO: Digital output interface(0 and 1)

Solar Bullet train Educational DIY Solar Kit This DIY kit is perfect for families looking to teach their children about clean energy while having fun together. The Solar Bullet Train kit requires no batteries, making it easy to assemble and operate safely. It's also an eco-friendly and educational toy, making it ideal for school projects. With this kit, children can learn about the benefits of using free, renewable energy while improving their manual dexterity and problem-solving skills. As they assemble the parts and create their own solar-powered toy train, they'll discover how the sun's energy can be harnessed to drive small motors, reducing carbon dioxide emissions and protecting the environment. The Solar Bullet Train kit is a great way to enhance children's understanding of science, as well as their mental and practical abilities. By using their hands and brains to construct the train, they'll gain confidence in their ability to create and innovate with clean energy. check out : 3 in 1 Educational DIY Solar Robot Kit

Solar Power Manager 5V Solar Power Manager 5V is the ultimate solution for efficient solar panel management. Featuring MPPT technology, this module maximizes the performance of your 5V solar panel, making it ideal for a variety of IoT projects and renewable energy applications. Designed to provide up to 900mA charging current to a 3.7V Li battery through USB or solar panel, it ensures a reliable power supply. The ON/OFF controllable DC-DC converters with a 5V 1A output cater to the needs of different solar power projects and low-power applications. Safety is paramount, and Solar Power Manager 5V incorporates various protection functions for the battery, solar panel, and output. This enhances the stability and safety of your solar projects, making it a dependable choice for makers and application engineers. Crafted with precision, Solar Power Manager 5V is perfect for small solar street lamps, solar-powered robots, and solar power banks. Its user-friendly design, efficient charging options, and versatile applications make it an indispensable component for your projects. Features: Constant voltage MPPT algorithm, maximizing solar panel efficiency Designed for 5V solar panel Double charging mode: solar/USB charger (900mA max charge current) 5V ON/OFF controllable regulated power supply for low-power applications All-round protection functions USB connector with ESD shell Pin Diagram: Applications: Smart solar environment monitor system Solar powered robot Small solar street lamp Solar power bank Solar Cells and Panels with Arduino

Solar-powered Black Cockroach Bug Toy This is Solar Powered Vibrating Black Cockroach Bug for Children’s Educational purposes. Nice Toy as a gift for children. Toy & gadget to place in the office or home to scare and have fun with your friends and mate. No battery or other power source is needed, just put them under the sun to absorb energy from the sunshine to make them vibrating and move Both specially designed and eco-friendly, this product is also an excellent teaching tool to let your students know some basic knowledge about solar energy A fun demonstration of solar power.

Solar Roller Coaster The Solar Roller-Coaster Energy Kit is an educational solar toy that runs on solar energy or battery power. This plastic kit features a solar concept house that showcases the principles and operation of solar energy. By playing with this toy, children can develop their environmental protection consciousness and inspire their exploration interests in green architecture. The Solar Roller-Coaster Energy Kit is an innovative DIY toy that lets children understand the power and charm of solar energy. The solar cells in the kit must be in the sun to generate power, which enhances children's understanding of energy-saving and environmental protection awareness. This kit is a perfect communicational bridge for you and your child to learn and play together while cultivating their intellectual and practical abilities.

Solder Wire (45gm) Soldering wire 45 gm is useful if you want to join components and wires, over your PCB. These wires are manufactured from high-quality Lead Solder Wire. It has good solderability, insulation resistance, No spattering, and is non-corrosive. It is a solid choice for electronics projects made from a mix of 60% tin and 40% lead, which works well for soldering. With a thickness of 1mm and a SWG of 22, it flows easily and helps make strong connections. Applications: Soldering on PCB Soldering Electrical appliances.