NE555 + CD4017 Water Flowing Light LED Module DIY Kit This is NE555 + CD4017 Water Flowing Light LED Module DIY Kit. It has a double-sided board with a surface mount and a through-hole configuration. It is designed for users with advanced soldering skills. You must solder some components on the top surface and some components on the bottom side of the board. The module has a very simple assembly process that will take anywhere between 30 minutes to an hour. This kit is mainly composed of clock generation circuit and decimal counter circuit. The NE555 is the core self-excited multivibrator. The power supply charges the capacitor C1 through R2, R3 and R4. When C1 starts charging, the NE555 2 pin also At low level, the output pin 3 is high. When the power supply is charged to C2 to the 2/3 power supply voltage through R2, R3, and R4, the output pin 3 level changes from high to low. NE555 internal discharge tube guide Pass, capacitor C1 is discharged through pin 7 of R4, R3, NE555, until the voltage across C1 is lower than 1/3 of the power supply voltage, the level of the 3 pin of NE555 changes from low level to high level. C1 is charged again. This cycle forms an oscillation. The charging time is: 0.695 (R2+R3+R4)C1, the discharge time is: 0.695 (R4+R3)C1, the R4 can be adjusted to control the output frequency of the oscillator, and the clock oscillation signal of NE555 is continuously added to the 14th pin of CD4017. Ten LEDs are connected to the 10 outputs of the CD4017. When the 10 outputs of the CD4017 alternately generate a high level under the action of the clock signal, D1--D10 are sequentially illuminated to form a water-light effect. Adjust the R4 to adjust the flow speed of the LED light. Package Includes: 1 x PCB Board 1 x NE555 Chip 2 x 1μF Capacitance 1 x CD4017 Chip 1 x 2-Pin Bending 10 x 3mm Red LED 1 x 2.2KΩ Resistance 1 x 10KΩ Resistance 10 x 1KΩ Resistance 1 x 50KΩ Blue-white Potentiometer Specifications: Chip NE555, CD4017 Input Voltage 2.5 ~ 14.5 V PCB Size (LxWxH) 54.5 x 20.5 x 1.5 mm LED color Red Resistor Type SMD Weight 105gm

Otto DIY Kit for Interactive Robot compatible with Arduino The Otto DIY Kit is the perfect solution for DIY enthusiasts and educators. It is open source, Arduino-compatible, easy to assemble, 3D-printed, versatile, and available in various colors. Made with high-quality ABS material, this robot kit ensures the highest quality and durability.  Its Arduino-compatible technology provides easy programming and customization, guaranteeing an engaging learning experience. The material used in the robot offers robustness, making it suitable for indoor projects and perfect for education and hobbyists. Our DIY OTTO Robot Kit is easy to assemble and maintain with a straightforward design, designed to solve learning challenges. The robot kit, with its versatile functionality, measures compactly and is suitable for ages 10 and up. This kit is ideal for students, educators, and hobbyists. Features  Open Source Arduino-Compatible 3D-Printable Two-Legged Can Be Easily Programmed Can Walk, Dance, Sing, and Avoid Obstacles. Applications Educational Settings: The DIY OTTO Robot Kit is perfect for classrooms and workshops, providing a hands-on learning experience in robotics and programming. It helps students understand basic principles of electronics, coding, and engineering. STEM Projects: Ideal for Science, Technology, Engineering, and Mathematics (STEM) initiatives, this kit supports project-based learning, encouraging students to develop problem-solving skills and creativity. DIY Learning: Hobbyists and DIY enthusiasts can use the kit to explore and experiment with robotics, gaining practical experience in building and programming their own robots. Interactive Classroom Environments: Teachers can use the robot kit as a teaching aid to create interactive lessons and activities that engage students and enhance their understanding of technology. Robotics Competitions: The kit is suitable for robotics competitions, allowing participants to design and program their robots for various challenges, such as obstacle avoidance and dance routines. Tech Camps and Workshops: The DIY OTTO Robot Kit is a great resource for tech camps and workshops, providing participants with the tools to build and program their robots, fostering a passion for technology. Home Learning: Parents can use the kit to introduce their children to the world of robotics at home, providing an educational and fun activity that promotes learning and development. Prototyping and Customization: Makers and inventors can use the kit to prototype and customize their own robotic designs, leveraging the open-source nature of the kit for innovation. Skill Development: The kit supports the development of essential skills, including coding, engineering, and critical thinking, making it a valuable tool for both personal and professional growth. Entertainment and Creativity: The versatile functions of the robot, such as walking, dancing, and singing, provide entertainment and a creative outlet for users of all ages. Package Includes: Nano ATmega328 USB cable Nano I/O shield Ultrasound sensor Piezo buzzer DuPont easy to connect cables F/F AA battery case with switch 4 x micro servo motors Set of screws Otto DIY Robot Specification Brand  Otto Robot  Material Used  3D Printed Plastic Colour  Green, Red, Blue, Orange, Black, Purple and Pink Size 11cm * 7cm * 12cm Item Weight  255 grams

RC Brush Car No.1 Model Kit DIY Scientific Toys for Science Training. Bicycles, electric cars, motorcycles, cars. All these cars have wheels. Have you ever seen a car that can run without wheels? In fact, cars don't have to have wheels! You don't believe it? Come and check this out, A brush car is a car that can run without wheels!  Brush car NO.1 is a magical car, do not underestimate this set of experimental materials. Ordinary small brush, in the hands of the children will become magical, and increase their curiosity and thinking habits. Helps in teaching the concept of vibration, eccentric wheel shaft and motors. working: Eccentric wheel: The so-called eccentric wheel means that the axis of the wheel is not on the center of the wheel. At this time, the wheels are not on the same plane when they move, which causes the object to vibrate. Eccentric vibration: This term is often used in cell phone vibrators and is caused by the eccentric rotation of a metal rod. Due to the high-speed rotation inside the sealed metal box where the metal rods are located, the internal air of the metal box also undergoes violent movement by friction. This causes the entire sealed metal box to vibrate, which in turn drives the entire mobile phone to vibrate. Package Includes: 1 x RC Brush Car No.1 Model Kit DIY Scientific Toys for Science Training. Specifications Length 110 mm Width 30 mm Batteries required Two AA5 Weight 30 gm

Spider Robot Insect Fun Toy  This solar spider when exposed to sunlight can start its mini-engine by shaking itself, so no batteries are needed. Powered by sunlight, this product will shake itself, seemingly forward or backward, spinning around as if looking for food. Both specially designed and eco-friendly, this product is also an excellent teaching aid to provide students with some basic knowledge about solar energy.

Windmill DIY Kit A Windmill DIY Kit is a kit that allows people to construct their own windmill. For children, constructing a windmill from a DIY kit can be a fun and educational project. The process of building a windmill allows for hands-on experience with the various components that comprise a windmill. This DIY kit consists of a small plastic fan, a 9V battery with a battery cap, a toy motor and a 2-pin SPST switch. This DIY windmill can also be used as a small fan.  Applications: Mini Fan  DIY Windmill  Package Includes: 1 x 2-Pin SPST Switch 1 x 9V battery 1 x 9V Battery Snap Connector 1 x Toy Motor 1 x Small Plastic Fan