L7905CV IC – 5V Negative Voltage Regulator IC
Automatic Hand Sanitizer Using IR DIY STEM KIT Science Project Model (Assembled) – 100% Tested & Easy-to-Use
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- Automatic Hand Sanitizer Using IR – Complete assembled kit, 100% tested for reliable performance.
- Includes detailed documentation: circuit diagrams, PCB layout, testing documents, and more.
- YouTube videos available for easy understanding and setup.
- https://www.youtube.com/watch?v=M8C89AUYswI
- 100% support on working days (11 AM - 6 PM) via email: Smartxbrains@gmail.com.
- Fastest delivery across India – Perfect for electronics, automation, and educational projects.
L293D Motor-Stepper-Servo Driver Shield for Arduino
Specification
- Supplied Fully Assembled
- 2x 5V Servo outputs connected to the high-resolution dedicated timer - no jitter!
- Can drive 4 DC motors or 2 stepper motors or 2 Servo's
- Up to 4 bi-directional DC motors with individual 8-bit speed selection
- Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
- 4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 36V DC
- Pull down resistors keep motors disabled during power-up
- reset button
- Tested compatible for Arduino Mega, Diecimila, Duemilanove, Arduino UNO
Water Float Switch Sensor (Big) for Water Level Controller with 3 Meter Wire
DIY Humanoid Otto Robot Combo Kit – Programmable Walking Robot for Kids & Beginners – (017)
Features:
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DIY bipedal robot that walks, dances, and avoids obstacles
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Beginner-friendly kit based on Arduino Nano
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Includes all required electronics and plastic parts
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Bluetooth-enabled for wireless control
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Ideal for STEM education, robotics workshops, and fun learning at home
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Easy to assemble with detailed tutorials and open-source support
📦 Included Components:
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Humanoid Otto Robot 3D Printed Plastic Parts (Color May Vary)
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1x Arduino Nano
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1x Arduino Nano USB Cable
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1x Nano Expansion Shield
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6x SG90 Servo Motors
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1x HC-05 Bluetooth Module
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1x Ultrasonic Sensor (for obstacle detection)
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1x 5V Active Buzzer
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1x On/Off Push Switch
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1x AA 4 Cell Battery Holder (Small Size)
- 2x li-on battery
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10x Female-to-Female Jumper Wires How to make - https://www.instructables.com/Otto-DIY-Humanoid-Robot/
We have included the 3D-printed parts and essential electronic components in this kit. However, a few additional items such as hardware and the power supply will need to be purchased locally, depending on your specific project requirements.
Quadruped Spider Robot Combo Kit – -4 Legged DIY STEM Crawling Robot with Servo Motors – (022)
✅ Features: Quadruped Spider Robot Combo Kit – 6-Legged DIY STEM Crawling Robot with Servo Motors
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4-legged robot with 12 servo joints (3 per leg)
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Controlled via Bluetooth using any Android device
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Powered by rechargeable 18650 batteries
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Based on Arduino Nano – easy to program and customize
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Perfect for STEM learning, school projects, and robotics enthusiasts
📦 Included Components:
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1x 3D Printed Quadruped Body Frame
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1x Arduino Nano with USB Cable
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1x Nano I/O Expansion Shield
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12x SG90 Servo Motors
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1x HC-05 Bluetooth Module
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1x ON/OFF Rocker Switch
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2x 3.7V 18650 Li-ion Batteries
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1x Dual 18650 Battery Holder
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10x Female-to-Female Jumper Wires
How to Make - https://www.instructables.com/DIY-Spider-RobotQuad-robot-Quadruped/
PIR Sensor Panel-Mounted Enclosure (*PIR Sensor Not Included) – 020
- Material: Durable PLA (Polylactic Acid)
- Size: 52 x 42 x 37 mm – fits most PIR sensors
- Design: Panel-mounted for stable installation
- Openings: Precision-cut for easy connector access
- Applications: Ideal for security systems, automation, prototypes, and educational projects
- Color: May vary due to 3D printing process
Yellow Speaker Spider
12V Big Buzzer
Piezo Buzzer 35mm
- Used in Medical Diagnostics
- Electric lighter
- Microphones.
Features:
- Clear sound
- Ultra-thin and lightweight
- No contacts: therefore, no noise and highly reliable
- Low power consumption for voltage type
- Excellent accessory for acoustic instrument pickups, stompboxes, contact mics, etc.
- Piezoelectric buzzer film. Can be fitted to used acoustic guitars, CBGs, drums, etc.
- 35mm brass outer diameter plate and ceramic inner diameter plate.
- All the discs are made from selected copper, ensuring excellent conductivity and long-lasting use.
















