Otto DIY Kit for Interactive Robot compatible with Arduino

Official Raspberry Pi 4 Model B 4GB RAM The Raspberry Pi 4 Model B 4GB is a compact and versatile single-board computer that provides desktop-level performance in a credit card-sized device. The RPI 4B is powered by a Broadcom Quad-Core Cortex-A72 (ARM v8) 64-bit SoC that runs at 1.5GHz and has 4GB of LPDDR4-3200 SDRAM for efficient multitasking and basic desktop programs. This device is designed for a wide range of DIY projects, including media centres, file servers, robotics, and smart home systems. The Raspberry Pi 4B 4GB supports dual 4K displays ( 4K@30Hz ) through its micro-HDMI ports, making it perfect for high-definition video and creative endeavours. It has dual-band WiFi 2.4 GHz and 5.0 GHz IEEE 802.11ac , Bluetooth 5.0 , and Gigabit Ethernet for a consistent connection. It also features two USB 3.0 connections and two USB 2.0 ports to connect devices. The Raspberry Pi 4 4GB is popular among programmers and makers. It comes with native Python support , making it a fantastic platform for coding education and automation project development. It is capable of running both 32-bit and 64-bit operating systems , offering versatility for different uses. Whether for teaching, prototyping, or creative projects, it serves as a potent and affordable computing option. Shop Raspberry Pi 4 4GB Full Kit – Plug & Play Setup Affordable power for your projects – Raspberry Pi 4 2GB ! What makes this model Great? The speed and performance of the new Raspberry Pi 4 4GB are a noticeable improvement from earlier models. For the first time, the Raspberry Pi Foundation has created a complete desktop experience. Whether you're editing documents, browsing the web with multiple tabs open, managing spreadsheets, or creating a presentation, you'll find the experience smooth and familiar. It is a more energy-efficient and cost-effective machine. Features Broadcom 2711 Quad-Core Cortex A72 @ 1.5GHz delivers 20% faster performance with improved power and thermal efficiency. Dual micro-HDMI outputs support dual 4K displays with hardware video decode at 4Kp60 (H.265, H.264, MPEG-4). Dual-band WiFi (802.11b/g/n/ac) on 2.4GHz & 5GHz with advanced PCB antenna for robust wireless connectivity. Bluetooth 5.0 offers an extended range of wireless peripherals. Upgraded USB 3.0 Ethernet provides wired speeds up to 10x faster than previous models. 2 USB 3.0 and 2 USB 2.0 ports enable versatile peripheral connections. 40-pin GPIO header is fully backwards-compatible with earlier Pi models. Optional PoE support is available, with PoE header pins designed to work with proper standoffs. Comparison Table Raspberry Pi 4 Model B Raspberry Pi 5 Raspberry Pi 3 Model B+ Price (INR) ?3599 VIEW ?5129 VIEW ?3649 VIEW Processor 1.5GHz Quad-Core ARM Cortex-A72 2.4GHz Quad-Core ARM Cortex-A76 1.4GHz Quad-Core ARM Cortex-A53 RAM 1GB, 2GB, 4GB, 8GB LPDDR4 2GB, 4GB, 8GB, 16GB LPDDR4 1GB LPDDR2 Wi-Fi Dual-band 802.11ac Dual-band 802.11ac Dual-band 802.11ac Bluetooth 5.0 5.0 4.2 USB Ports 2× USB 3.0, 2× USB 2.0 2× USB 3.0, 1× USB 2.0 4× USB 2.0 Ethernet Gigabit Ethernet Gigabit Ethernet Gigabit Ethernet Video Output 2× Micro HDMI (4Kp60) 2× Micro HDMI (4Kp60) 1× HDMI (1080p) GPIO Pins 40 40 40 Storage MicroSD (SDXC up to 2TB) MicroSD (SDXC up to 2TB) MicroSD (SDHC) Power Supply USB-C USB-C Micro USB Click for Complete Raspberry Pi Kits – Learn, Build, and Innovate! Pin Diagram:

SmartElex MicroB USB Breakout Board The SmartElex MicroB USB Breakout Board is a compact adapter board designed to make it easy to access the pins of a Micro-B USB connector for prototyping, development, and testing. It breaks out the USB port into simple pin headers, allowing users to interface USB power and data lines with custom circuits, breadboards, and microcontroller boards. This USB breakout board is ideal for students, makers, educators, and engineers who need a quick and reliable way to add USB connectivity to their electronics projects without designing a custom PCB. This board is commonly used in robotics, IoT applications, embedded system development, device repair, and hardware prototyping where USB access is required for powering circuits or transferring data. It works smoothly with platforms like Arduino, Raspberry Pi, and ESP32, enabling fast integration with both beginner and advanced projects. With its straightforward layout and sturdy connector design, the SmartElex MicroB USB Breakout Board is a practical and efficient choice for workshops, prototyping labs, and DIY electronic builds that require stable Micro-B USB interfacing Features: Micro-B USB connector broken out to easy-to-use header pins Simplifies USB power and data access for prototyping and testing Supports quick integration with breadboards and custom circuits Compatible with Arduino, Raspberry Pi, ESP32, and microcontrollers Ideal for DIY repairs, IoT projects, and embedded hardware development Compact and beginner-friendly design for rapid project setup

7Semi MAX31855 K-Type Thermocouple Amplifier Breakout The 7Semi MAX31855 Thermocouple Amplifier Breakout is designed for creators, engineers, and industrial users who need reliable and highly accurate temperature readings from extreme environments. With its advanced MAX31855 converter IC, this breakout allows effortless digital temperature measurement using K-type thermocouples, making it a powerful choice for applications like 3D printing, HVAC monitoring, and high-heat industrial systems. The onboard cold-junction compensation ensures precision by automatically correcting any thermal offsets at the connector. Supporting temperatures from -270°C to +1372°C, it delivers 14-bit resolution with smooth 0.25°C read steps, providing dependable, noise-free readings for sensitive processes. Built-in fault detection helps identify open circuits or shorts, making the system easier to troubleshoot and safer for continuous operation. With its SPI-based digital interface and compatibility with 3.3V/5V logic microcontrollers, the module integrates cleanly with Arduino, ESP32, Raspberry Pi, and industrial controllers. Features: Supports a wide thermocouple measurement range from –270°C to +1372°C, making it suitable for extreme heat and cryogenic applications. Provides 14-bit high-resolution output with precise 0.25°C increments for accurate temperature monitoring. Includes built-in cold-junction compensation, ensuring reliable compensation for ambient temperature fluctuations. Offers a simple SPI digital interface, requiring minimal I/O pins for easy integration with most microcontrollers. Compatible with multiple thermocouple types including K, J, N, T, S, R, and E, providing versatility in system design. Features fault detection for open thermocouples and shorts to VCC/GND to enhance system safety. Supports both 3.3V and 5V logic levels, ensuring broad compatibility across development boards.

SmartElex RJ45 magjack Connector Breakout Board The SmartElex RJ45 MagJack Connector Breakout Board is a convenient module designed to make Ethernet connectivity accessible for custom electronics projects. It breaks out an RJ45 Ethernet jack with integrated magnetics, allowing users to interface network signals with development boards, prototypes, and embedded circuits without needing to design their own connector layout. This board is ideal for students, makers, engineers, educators, and startups who want to experiment with wired networking, communication protocols, or LAN-based control in robotics and IoT applications. This RJ45 MagJack breakout board is commonly used in IoT networks, automation systems, communication modules, and hardware prototypes that require Ethernet access for data transfer or device control. It can be used with platforms like Arduino, Raspberry Pi, ESP32, and other microcontroller boards that support Ethernet interfacing through additional hardware or modules. With reliable connectivity and a beginner-friendly breakout design, the SmartElex RJ45 MagJack Connector Breakout Board is a practical choice for testing, learning, and developing Ethernet-enabled electronic devices and embedded systems. Features: Breaks out an RJ45 MagJack Ethernet connector to easy-to-use pins Simplifies Ethernet interfacing for prototyping and custom circuits Integrated magnetics for stable network signal handling Compatible with Arduino, Raspberry Pi, ESP32 (with Ethernet support) Ideal for IoT, automation, LAN communication, and embedded systems Great for testing, learning, and building Ethernet-enabled devices

SmartElex BS612 PIR Motion Sensor Module The SmartElex BS612 PIR Motion Sensor Module is a passive infrared motion detection solution designed to sense human movement by detecting changes in infrared radiation. It helps automate electronic systems by enabling actions only when motion is detected, improving efficiency and reducing unnecessary power usage. This module is suitable for students, makers, engineers, educators, and startups who need a reliable motion sensing component for learning projects, prototypes, and embedded system designs. This PIR motion sensor module is commonly used in robotics, IoT devices, security systems, and home or industrial automation projects where accurate motion detection is required. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick integration into working systems. The wide detection coverage and stable performance make it ideal for applications like motion-activated lighting, alarm systems, smart monitoring solutions, and interactive electronics projects. Features: Passive infrared (PIR) sensor for accurate human motion detection Detects movement by sensing changes in infrared radiation Wide 120° detection angle for broader area coverage Long sensing range suitable for security and automation use Low power consumption for battery-operated projects Compatible with Arduino, Raspberry Pi, ESP32, and similar microcontrollers

SmartElex ILD213T Opto-isolator Breakout Board SmartElex ILD213T Opto-isolator Breakout Board is designed to provide reliable electrical isolation between two circuits, helping protect sensitive components from voltage spikes, noise, and ground loop issues. This opto isolator board uses the ILD213T optocoupler to safely transfer signals while keeping high-voltage and low-voltage sections separated. It is a practical solution for students, hobbyists, engineers, educators, and startups who need to interface microcontrollers with external hardware without risking damage to their development boards or sensors. This ILD213T optoisolator module is well-suited for robotics, IoT systems, industrial automation, and embedded prototyping where signal integrity and safety are important. It integrates easily with platforms like Arduino, Raspberry Pi, and ESP32, enabling secure communication with relays, motors, sensors, and noisy electrical equipment. By using this electrical isolation board, users can build more stable and durable projects, ensuring consistent performance and reduced troubleshooting due to interference or short circuits. Features: Provides electrical isolation between input and output circuits Based on the ILD213T optocoupler for reliable signal transfer Protects microcontrollers from voltage spikes and noise Helps prevent ground loops and interference issues Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Ideal for robotics, IoT, automation, and industrial interfaces

SmartElex PL2303 USB To UART Communication Converter Module The SmartElex PL2303 module is a reliable USB to UART converter designed to make serial communication simple and accessible for embedded projects. It helps users connect microcontrollers and development boards to a computer through USB, solving common debugging and programming challenges. This USB to Serial TTL Module is ideal for students, makers, educators, engineers, and startups who need a dependable interface for testing, flashing, and communicating with serial devices. This module works smoothly with popular platforms such as Arduino, Raspberry Pi, and ESP32, making it useful for robotics, IoT development, automation systems, and rapid prototyping. Its plug-and-play design allows quick setup without complex wiring, helping users save time during development and troubleshooting. Whether used for firmware upload, serial monitoring, or device communication, this converter offers stable performance and easy integration for everyday electronics projects. Features: Reliable USB to UART converter for serial communication Based on the PL2303 chipset for stable data transfer Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Plug-and-play operation for quick setup and use Ideal for programming, debugging, and serial monitoring Suitable for robotics, IoT, automation, and DIY electronics projects

Pludo Solar Satellite DIY Kit – Solar Energy Learning DIY Science Kits for Kids 11–14 | Grades 6–8 Pludo Solar Satellite DIY Kits for Kids 11–14. This engaging Solar Satellite STEM project lets children explore the principles of solar power, motion, and basic electronics through hands-on experimentation. Designed for students in Grades 6–8, the kit encourages analytical thinking and problem-solving as they build and understand how solar energy can power satellite motion. With its balance of creativity and science, this educational toy makes learning interactive and exciting. Ideal for young explorers who love science toys and hands-on discovery, SpinSat transforms abstract physics concepts into a fun, practical experience. Whether used at home or in classrooms, it’s a perfect DIY toy that blends education with creativity. What Your Child Will Learn: Learn the basics of solar energy conversion and motion. Discover how electric circuits and solar panels work together. Build creativity and problem-solving skills through guided construction. Develop an early interest in space science and renewable energy. Strengthen curiosity and confidence with practical, real-world learning. Educational Outcomes: STEM Concept Integration: Helps children understand renewable energy principles and mechanical motion through experimentation. Hands-On Learning: Promotes creativity, observation, and engineering thinking while assembling a functional solar satellite. Aligned with NEP 2020: Encourages conceptual learning and innovation for Grades 6–8 (Ages 11–14). Skill Development: Builds fine motor skills, analytical ability, and confidence in performing science-based tasks. Practical Science Awareness: Connects solar power applications to real-world uses in space exploration and sustainable technology. Fun Fact: Solar-powered satellites use sunlight to generate electricity — the same principle your SpinSat model demonstrates! Features STEM-based solar project: Introduces kids to the concepts of solar energy, motion, and basic electronics through hands-on learning. Interactive DIY experience: Children assemble their own working solar satellite model, promoting creativity and problem-solving skills. Ideal for grades 6–8 (ages 11–14): Designed as per NEP 2020 to enhance scientific thinking and curiosity in middle school learners. Safe and educational: Made with non-toxic, child-safe materials; recommended for supervised use by adults or STEM tutors. Perfect for gifting: A unique and thoughtful educational gift for young space enthusiasts and budding engineers. Practical learning value: Encourages real-world understanding of renewable energy while making science fun and engaging.

SmartElex 12V 3A 8 Channel Signal Relay Module The SmartElex 12V 3A 8 Channel Signal Relay Module is a reliable control solution designed to switch multiple electrical devices using low-power control signals. It allows users to safely manage higher-voltage or higher-current loads without directly connecting them to sensitive control circuits. This module is suitable for students, makers, engineers, educators, and startups working on embedded systems, automation projects, and control applications that require dependable multi-channel switching. This 8-channel relay module is ideal for robotics, IoT systems, home and industrial automation, and advanced prototyping where several devices need to be controlled independently. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32 to control lights, motors, pumps, relays, or other external equipment. The straightforward design and consistent performance make it easy to integrate into both experimental setups and finished products, supporting safe and efficient control across a wide range of applications. Features: 8-channel relay module for controlling multiple devices independently Operates on 12V, suitable for automation and control systems Supports up to 3A load current per relay channel Electrical isolation between control signals and load circuits Compatible with Arduino, Raspberry Pi, ESP32, and other controllers Compact board design with LED indicators for channel status

SmartElex HTU21D-F Temperature and Humidity Sensor with Breakout Board The SmartElex HTU21D-F Temperature and Humidity Sensor with Breakout Board is a compact and reliable temperature and humidity sensor designed for accurate environmental monitoring. It helps users measure ambient temperature and humidity digitally with stable output, making it suitable for students, makers, educators, and engineers working on sensing and monitoring applications. This digital temperature and humidity sensor is ideal for those who want dependable readings without complex circuitry, especially in learning, testing, and early product development environments. This I2C digital humidity sensor is widely used in IoT systems, weather monitoring projects, automation setups, and data logging applications where consistent environmental data is required. It integrates easily with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick setup and smooth communication through the I2C interface. With its breakout board design and reliable performance, the SmartElex HTU21D-F sensor is well suited for prototyping, robotics projects, and educational labs looking for a practical alternative to traditional sensors like SHT15 breakout boards. Features: Digital temperature and humidity sensor with stable and accurate readings I2C interface for simple and reliable data communication Compact breakout board for quick prototyping and testing Easy to use with Arduino, Raspberry Pi, and ESP32 platforms Suitable for IoT, automation, and environmental monitoring projects Ideal replacement option for older sensors like SHT15 breakout boards

SmartElex Hall Sensor The SmartElex Hall Sensor is a compact electronic component designed to detect magnetic fields using the Hall effect. It helps sense the presence, strength, or change in magnetic fields without physical contact, making it useful for reliable and wear-free detection. This sensor is suitable for students, makers, engineers, educators, and startups who are working on electronics projects that require accurate magnetic field sensing, position detection, or rotational speed measurement. This hall effect sensor is widely used in robotics, IoT devices, automation systems, and general prototyping applications. It can be easily interfaced with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick integration into both learning projects and real-world systems. Common use cases include motor speed sensing, position detection, proximity sensing, and safety switches, where consistent performance and simple integration are important. Features: Detects magnetic fields using the Hall effect principle Contactless sensing for reliable and wear-free operation Fast response suitable for speed and position detection Digital/analog output (depending on variant) for easy interfacing Compatible with Arduino, Raspberry Pi, ESP32, and other controllers Ideal for motor control, proximity sensing, and automation projects

7Semi Vikram-3025 High-Power 25A DC Motor Driver for 6–30V Motors The 7Semi Vikram-3025 is a heavy-duty single-channel DC motor driver built for demanding robotics, automation, and mechatronics projects. Designed to handle 25A continuous load with a 6V–30V operating range, it uses a high-efficiency discrete NMOS H-Bridge that eliminates the need for bulky heat sinks. Whether you're powering high-torque DC motors or creating reliable industrial controls, this driver ensures stable, smooth, and responsive performance. With built-in safety features like overcurrent protection, temperature protection, and undervoltage shutdown, your system stays secure even under heavy loads. This motor driver goes beyond basic control, it includes onboard test buttons, motor output LEDs, and a regulated 5V output for powering microcontrollers, making prototyping extremely convenient. It supports PWM/DIR control signals from a wide range of logic voltages (1.8V to 30V), ensuring compatibility with Arduino, Raspberry Pi, PLCs, and other controllers. It also offers manual control options using a potentiometer and switch, giving both beginners and advanced users flexible control in real-world applications. This makes it a dependable choice for custom robotics, high-power motor control, and automation systems. Features: Provides smooth and reliable bidirectional control for single brushed DC motors. Supports a wide operating voltage range from 6V to 30V for flexible motor compatibility. Handles a continuous motor current of 25A, ideal for high-load or high-torque applications. Includes an onboard 5V regulated output (250mA) to power a microcontroller without an external supply. Onboard test buttons and motor state LEDs allow quick, controller-free testing during prototyping. Offers dual input modes: PWM/DIR for digital control or potentiometer/switch for manual operation. Compatible with 1.8V, 3.3V, 5V, 12V, and 24V logic, making it suitable for Arduino, Raspberry Pi, PLCs, and more. Supports PWM input frequency up to 40kHz with a fixed 16kHz output for quiet motor operation. Built-in protections include active current limiting, overcurrent protection, temperature protection, and undervoltage shutdown.

SmartElex 12V 10A Single Channel Power Relay Module The SmartElex 12V 10A Single Channel Power Relay Module is a reliable switching solution designed to control high-power electrical loads using low-voltage control signals. It helps safely operate devices that draw higher current without directly connecting them to sensitive control circuits. This module is suitable for students, makers, engineers, educators, and startups who are working on electronics projects, automation systems, or prototypes that require dependable and safe power switching. This single channel power relay module is widely used in robotics, IoT applications, home automation, and industrial control projects where motors, lights, pumps, or appliances need to be switched on and off reliably. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32, making integration simple for both learning projects and real-world systems. The sturdy design and consistent performance make it a practical choice for prototyping as well as final deployment in power control applications. Features: Single channel power relay module for high-current load switching Operates on 12V, suitable for automation and control applications Supports up to 10A load current for power devices Electrical isolation between control and load circuits for safety Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Compact and durable design for easy integration

SmartElex 8 Channel Multiplexer Breakout Module – (74HC4051) The SmartElex 8 Channel Multiplexer Breakout Module (74HC4051) is a compact and efficient solution for expanding input and output options in electronic projects. This 74HC4051 multiplexer breakout allows users to route multiple signals through a single microcontroller pin, solving the problem of limited I/O availability when working with sensors, switches, or analog inputs. It is designed for students, makers, engineers, educators, and startups who need a practical way to manage multiple device connections without increasing hardware complexity. This module acts as both an 8 channel multiplexer and demultiplexer, making it suitable for robotics, IoT systems, automation tasks, and rapid prototyping. It integrates smoothly with Arduino, Raspberry Pi, ESP32, and similar platforms, enabling users to scale projects without sacrificing performance or stability. Whether you are building sensor hubs, data acquisition systems, or experimenting with signal routing, this multiplexer demultiplexer module offers a reliable and easy-to-use interface that enhances flexibility in circuit design. Features: Based on the 74HC4051 8-channel analog/digital multiplexer IC Expands I/O by routing up to 8 signals through a single control interface Works as both a multiplexer and demultiplexer for flexible signal routing Helps manage limited microcontroller pins in multi-sensor projects Compatible with Arduino, Raspberry Pi, ESP32, and similar platforms Ideal for robotics, IoT systems, data acquisition, and prototyping

SmartElex DS3232 RTC (Real Time Clock) Breakout Module The SmartElex DS3232 RTC Breakout Module is a reliable DS3232 RTC module designed for accurate and long-term timekeeping in electronics and IoT projects. With an integrated crystal oscillator and temperature-compensated circuitry, it maintains precise date and time even under changing environmental conditions. This real-time clock module supports I²C communication, making it simple to interface with popular microcontrollers for applications such as data logging, digital clocks, alarms, and automation systems. A coin cell battery backup keeps the clock running during power loss, while its low power consumption and stable performance make it ideal for projects that demand exact timing and consistent operation over years. Features: Integrated crystal for accurate timekeeping. Temperature correction to reduce drift. Compact design that works well with breadboards. Works with I²C interface for microcontroller integration. Includes a coin cell battery backup for uninterrupted operation. Fully constructed and tested module ready for speedy deployment. Compatible with Arduino, Raspberry Pi, and other platforms. Low power usage results in longer battery life.