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Robu.in | Indian Online Store | RC Hobby | Robotics
  • Shop by Brands
  • New Arrivals
  • SimpliFly
    • SimpliFly Agriculture Drone
    • Simplifly FPV Drone Kit
    • SimpliFly ESCs
    • Simplifly Telemetry
  • SmartElex
    • SmartElex Programmer Modules
    • SmartElex Relay Modules
    • SmartElex Display Modules
      • SmartElex HMI Display
      • SmartElex TFT Display
    • SmartElex Power Modules
      • SmartElex Battery Charger Modules
      • SmartElex Boost + Charger Modules
      • SmartElex Boost Converter Modules
      • SmartElex Buck Converter Module
      • SmartElex Buck+Boost Modules
      • SmartElex Solar Charger Modules
    • SmartElex IOT and Wireless
      • SmartElex Bluetooth Modules
      • SmartElex WiFi and Bluetooth module
      • SmartElex GPS Modules
      • SmartElex GPRS Modules
      • SmartElex LORA + WAN Breakout Board
      • SmartElex WiFi Modules
      • SmartElex ZIGBEE Modules
    • SmartElex Logic Level Converter Modules
      • SmartElex Level Shifter Modules
      • SmartElex Multiplexer Modules
      • SmartElex Shift Resister Modules
    • SmartElex Sensor Modules
      • SmartElex Environmental Sensors
      • SmartElex Weather Sensors
      • SmartElex Pressure Sensors
      • SmartElex Temperature Sensors
      • SmartElex Humidity Sensors
      • SmartElex Magnetometer Sensors
      • SmartElex Line Tracking Sensors
      • SmartElex Sound Sensors
    • SmartElex Motor Drivers
      • SmartElex DC Motor Drivers
      • SmartElex Smart Motor Drivers
    • SmartElex Programmer Modules
    • SmartElex Connector Modules
    • SmartElex Development Board
  • Electronic Components
    • Integrated Circuits
      • Microcontroller IC
        • ARM Microcontrollers IC
        • 8-bit Microcontrollers IC
        • 16-bit Microcontrollers IC
        • 32-bit Microcontrollers IC
      • Optocoupler ICs
      • Buffers & Transceivers IC
      • Drivers & Interfaces IC
      • Frequency Management IC
      • Amplifier & Comparator IC
      • MOSFET ICs
      • Sensor ICs
      • Audio IC
      • Memory IC
      • Mux & Demux IC
      • Power management IC
      • Linear voltage regulator IC
      • Clock & Timing IC
      • Switching IC
      • ADC & DAC Converter IC
      • Bluetooth, WIFI and Trans-receiver ICs
      • IC Base
    • Resistors
      • Ceramic Resistors
      • Carbon Resistors
      • Current Sense Resistors
      • Film Resistors
      • High Frequency/RF Resistors
      • Metal Foil Resistors
      • MELF Resistors
      • Thermistor
      • Chassis Mount Resistors
    • Capacitors
      • Ceramic Capacitors
        • Disc Capacitor
        • SLCCs- Single Layer Ceramic Capacitors
        • MLCCs- Multi Layer Ceramic Capacitors
      • Aluminium Electrolytic Capacitors
      • Super Capacitors
      • Film Capacitors
      • Tantalum Capacitors
      • Mica Capacitors
      • Noise Suppression & Safety Capacitors
      • Polymer Capacitors
      • Silicon RF Capacitors
      • Capacitors Kit
    • Inductors
      • Power Inductors
      • RF Inductor
      • Air Core Inductors
      • Coupled Inductors
      • Fixed Value Inductors
      • High Frequency Inductors
      • Multilayer Inductors
      • Thin Film Inductors
      • Charging Coils & Arrays
      • Toroidal Inductors
      • Wirewound Inductors
    • Diodes Kit
    • Crystal , Oscillators
    • Component Kit
    • Panel Indicators & LEDs
      • LED Diode Kit
      • Panel Indicator Lights
      • LEDs with Multi Hole Holders
      • Through Hole DIP LEDs
      • SMD LED
    • Miscellaneous Component
      • Potentiometer & Trimmers
      • Fuse Kits
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
    • PCT Wire Connectors
    • RF Connectors
    • Interface Connector
    • FFC, FPC, Berg connectors
  • DIY & Maker Kits
    • Pro-Range DIY Project Kits
      • Pro-Range Kits for Arduinos
      • Raspberry Pi Kits
      • Pro-Range Electronic Component Kits
    • Humanoid and Biped Robot Kits
    • Educational Robot Kits and Accessories
    • Drone Kit
    • DIY 3D Printer Kits
    • E-bike Kit
    • Raspberry Pi Compatible Kits
    • Kits compatible with Arduino
    • Sensor Kits
    • Component Kit
  • Drone Parts
    • Kits
    • Frames and Accessories
    • Flight Controller & Accessories
    • Motors
    • Speed Controllers (ESC)
    • Drone Propellers
      • Upto 3 Inch
      • 3 Inch to 7 Inch
      • 8 Inch to 10 Inch
      • 11 Inch and Above
      • Carbon Fiber Propeller
      • Triblades
      • Propeller Nuts and Accessories
    • Drone Transmitter & Receiver
    • Antennas
    • FPV Cameras
    • FPV Antenna and Trans-Receivers
    • Accessories
    • Camera Gimbal
  • Electric Vehicle Parts
    • E-Bike Parts
      • E-Bike Motors
      • E-Bike Controllers
      • HMI Display for E-Bikes
      • E-Bike Mechanical Accessories
      • E-Bike Electronics Accessories
      • E-Bike Batteries and Case
        • E-bike Battery
      • E-bike Kit
    • E-Rikshaw Parts
      • E-Rikshaw Motors
      • E-Rikshaw Controllers
    • E-Mini Tricycle Parts
      • E-mini Tricycle Motors
      • E-mini Tricycle Controllers
    • E-Wheelchair Parts
      • E-Wheelchair Motors
      • E-Wheelchair Controllers
    • E-Forklift Parts
      • E-forklift Motors
      • E-forklift Controllers
    • E-Gokarts Parts
      • E-GOKARTS Motors
      • E-GOKARTS Controllers
  • CNC Laser Engraver Machines
    • Atomstack Laser Engraver
    • Two Trees Laser Engraver
    • Creality Laser Engraver
    • CNC Metal Engraver Machine
  • 3D Printers and Parts
    • 3D Printer Filaments & Resins
      • 3D Printer Filaments
        • Pro-Range Filaments
        • eSUN Filaments
        • Numakers Filaments
        • FlashForge Filaments
        • Creality Filaments
        • Sovol Filaments
        • ORANGE Premium Filaments
        • AlmightyFila Filaments
      • 3D Printer Resins
        • eSUN Resins
        • Pro-Range Resins
        • Elegoo Resins
    • 3D Printers
      • Prusa 3D Printers and Parts
      • Elegoo 3D Printers and Parts
      • Anycubic 3D Printers
      • UniFormation 3D Printers
      • Two Trees 3D Printers
      • Phrozen 3D Printers and Parts
      • Creality 3D Printers and Parts
      • BIQU 3D Printers and Parts
      • Bambu Lab 3D Printers
      • FlashForge 3D Printers
      • Goofoo 3D printer
      • Sovol 3D Printers
      • Other 3D Printers
    • 3D Printing Pen
    • Electronics Parts
      • 3D Printer Display and Controllers
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
      • Nema Stepper Motors
      • 3D Printer Display and Controller
      • 3D Printer Limit Switch
    • Mechnical Parts
      • 3D Printer Heatbed Assembly
      • 3D Printer Nozzle
      • Lead Screw and Nut
      • Linear Rail Guides
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • 3D Printer Coupling
      • Timing Belt and Pulley
      • Sleeves and Drag Chain
  • Batteries, Chargers and Accessories
    • Custom Battery Pack
    • Orange Lithium Polymer (Lipo) Battery Pack
      • 1 Cell (3.7-4.2)V
      • 2 Cell (7.4-8.4)V
      • 3 Cell (11.1-12.6)V
      • 4 Cell (14.8-16.8)V
      • 6 Cell (22.2-25.2)V
    • Single Cell Micro LiPo Battery
    • Lithium-Ion Batteries
      • 1 Cell Li-Ion Battery Pack (3.6V~4.2V)
      • 2 Cell Li-Ion Battery Pack (7.4V~8.4V)
      • 3 Cell 12V Li-Ion Battery Pack (11.1V~12.6V)
      • 4 Cell 15V Li-Ion Battery Pack (14.8V~16.8V)
      • 5 ~ 7 Cell Li-Ion Battery Pack
      • 6 Cell 24V Li-Ion Battery Pack (22.2V~25.2V)
      • 10 Cell 36V Li-Ion Battery Pack (36V~42V)
      • 13 Cell 48V Li-Ion Battery Pack (46.8V~54.6V)
    • LiFePO4 (LFP) Prismatic Battery Cell
    • Other Batteries
      • Button Cell / Coin Cell Battery
      • CNC and PLC Machine Battery
    • Battery Accessories
      • Battery Protection Board
      • Battery Holders and Spacers
      • Multi-brand Battery Chargers
      • Battery Connectors
      • Battery Harness
      • Lipo Voltage Checker
      • Parallel Charging Board
      • Lipo Battery Sack, Straps and Case
  • Motors, Drivers, Actuators
    • DC Planetary Gear Motors
      • Pro-Range High Torque Planetary Gears Motors
      • Orange Planetary Geared BLDC Motors
      • Cytron DC Planetary Geared Motors
    • Brushed DC Motor
      • Pro-Range 12V Johnson Geared Motor
      • Johnson Geared Motor (Grade B)
      • DC Motor with Encoder
      • 25 GA Motors
      • Pro-Range 12V OG 555 DC Gear Motor
      • RS 50 Geared Motor
      • Pro-Range RS775 High RPM Base Motor
      • Orange PM33 Motor
      • Pro-Range 12V Square Gear Box Motor
      • Pro-Range 12V Rectangular Gearbox Motor
    • Other DC Motors
      • BO Motors
      • 12V DC Centre Shaft Metal Gear Motor
      • Plastic Gear Box Motors
      • Vibratory Motors
      • Drone Motor
    • Motor Drivers
      • Brushed DC Motor Driver
      • Servo Motor Drivers
      • Stepper Motor Drivers
      • Brushless DC Motor Driver (ESC)
    • Micro Metal Geared Motors
      • Micro Gear Motor with Encoder
      • Micro Gear Motor without Encoder
    • Stepper Motor
    • Motor Accessories
      • Motor Mounting Brackets
      • Linear Motion Bearings
      • Motor Couplings
    • RC Servo Motors
      • Pro-Range RC Servo Motors
      • Emax Servo Motor
      • Hitec Servo Motors
      • KST Servo Motors
      • Hiwonder Servo Motor and Accessories
      • TowerPro Servo Motors
      • JR Servo Cable
      • Futaba Servo Cable
      • Pull and Push Rod for Servo
      • Other Servo Accessories
    • DC Pumps and Accessories
      • Kamoer Peristaltic Pump
      • Generic Mini DC Pumps
      • Pneumatic Connectors and Valves
    • DC Cooling Fans
    • Linear Actuators
    • Solenoids & Electromagnets
  • Development Board
    • Multi-Brand Single Board Computer Board
      • Seeed Studio SBC
      • Khadas SBC
      • ODROID SBC
      • BBC MicroBit and Expansion Boards
      • Chipsee Mini PC
      • LATTEPANDA Boards
      • AAEON SBC
      • Asus-Intel SBC
      • POLYHEX SBC & Accessories
      • D-Robotics Single Board Computer
      • HACKBOARD Single Board Computer
      • FriendlyElec
      • Milk-V
      • MYir
      • NVIDIA SBC
      • Beagle Board
      • FORLINX SBC
      • Udoo Board
      • pine64 SBC
    • Raspberry Pi
    • Official Arduino Boards and Kits
      • Official Arduino Boards
      • Arduino Pro
      • Official Arduino Kits
    • 8051 Development Board
    • Teensy Board
    • Udoo Board
    • ARM Microcontroller Boards
    • PIC Development board
    • PIC Programmers and Debuggers
    • Advance Development Boards
    • Arduino Compatible Boards & Accessories
      • Boards
      • Shields
      • Cables for Arduino
      • Displays
      • Case for Arduino
  • Raspberry Pi
    • Raspberry Pi Boards, Compute Module & Microcontrollers
    • Raspberry Pi Compatible Accessories
    • Raspberry Pi Compatible Kits
    • Raspberry Pi Add on Boards (HAT)
    • Raspberry Pi Case
    • Raspberry Pi Cameras and Display
    • Raspberry Pi Peripherals
  • Official Arduino Boards and Kits
    • Official Arduino Boards
    • Arduino Pro
    • Official Arduino Kits
  • Displays
    • HMI LCD Display
    • TFT LCD Displays
    • OLED Display
    • e-Ink Paper Display
    • Segment Displays
    • LED Dot Matrix Display
  • Sensors Modules
    • Sensor Kits
    • Ultrasonic and Proximity
      • MAXBOTIX Ultrasonic Sensor
      • Ultrasonic Sensors and Modules
      • Pro-Range Proximity Sensors
      • Autonics Proximity Sensor
      • Multi Brand Proximity Sensor & Modules
      • LIDAR Sensors
      • Multi-Brand Ultrasonic Sensors
    • Temp., Humidity, Gas & Environmental
      • Temperature & Humidity Sensor
      • Environmental Sensors
      • Gas and Dust Sensor
      • Thermoelectric Cooler
    • Motion, Light and Sound
      • PIR / IR and Optical Sensor
      • RFID Card, Tags & Reader
      • Light/Color Sensor
      • Line Sensor
      • Sound Sensor and Modules
    • Biometric, Rotation, and Current
      • Biometric/ECG/EMG Sensor
      • Rotary Encoder
      • Current and Voltage Sensor
    • Load, Pressure, Flow & Vibration
      • Water pH, TDS Meter, Flow, Level Sensor
      • Vibration/Tilt Sensor and Modules
      • Load Sensor
  • Cameras
    • IoT Cameras
    • FPV Cameras
    • Smart Vision Camera
    • Thermal Cameras
  • IoT and Wireless Modules
    • Ai-Thinker Dev. Boards & Modules
    • Other ESP WIFI Modules
    • IoT Development Boards
    • xBee Zigbee Module
    • LORA Module
    • Bluetooth and NRF Modules
    • GSM GPRS and GNSS Modules
    • Transmitter and Receivers
    • IoT WIFI Smart Switches & Routers
  • Electronic Modules
    • Programming Module
    • Memory Interfacing
    • Communication Module
    • Bluetooth Interfacing
    • Ethernet Module
    • USB Interface Module
    • LED Module
    • LASER Module
    • RGB LED Strips and Drivers
    • Breakout Board
    • Relay Modules
    • Electronic Switches/Keypads Modules
    • Solar Panels and Controllers
    • Wearable Electronic
    • Real Time Module (RTC)
    • Audio Amplifier Module
    • Logic Level Converter
    • Buck Boost Voltage Regulators
      • Boost Converter (Step-Up )
      • Buck Converter (Step-Down)
    • Digital Measuring Devices
      • Digital Multimeters
      • Temperature Meter & Controllers
      • Digital Voltage, Current and Frequency Meter
      • Signal Generator Module & Oscilloscopes
      • Other Measuring Instruments and Tools
    • DC Power Supply
      • Transformers
      • AC to DC Power Supply Module
      • Hi-Link Power Supply Module (HLK)
    • Displays
  • Wires and Cables
    • PVC and Silicone Wires
      • 12 to 16 AWG
      • 18 to 22 AWG
      • 24 to 30 AWG
      • PVC Wire
    • Ribbon | FPC/FFC Cables
      • DuPont / Jumper Cable
      • Interfacing and USB Cables
      • JR Servo cable
      • Futaba servo cable
      • FFC Cable
    • Heat Shrink Tubing / Sleeve
      • Heat Shrink Combos
      • 1 mm to 4 mm
      • 5 mm to 10 mm
      • 11 mm and Above
      • PVC Heat Shrink Sleeve
    • Tools and Accessories
      • Wire Cutter / Stripper
      • Cable Zip Ties
      • Sleeves and Drag Chain
  • Mechanical Parts, Measurement & Workbench Tools
    • Mechanical Robotic Parts
      • Robot Chassis
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • Lead Screw
      • Linear Rail Guides
      • Motor Couplings
      • Linear Motion Bearings
      • Motor Mounting Brackets
      • Plastic Gears
    • Robot Wheels
      • Omni Wheels
      • Heavy Duty Wheel
      • Mecanum Wheels
      • RC Car Wheel
      • Pulley Wheel & Track Belt
      • Caster Wheels
    • Carbon Fiber
      • Carbon Fiber Sheets and Strips
      • Carbon Fiber Tubes and Rods
    • Nuts, Bolts, Washers and Spacers
      • Countersunk (CSK) Screws
      • Socket Set Screws (Allen Grub)
      • Socket Head Cap Screw (Allen Bolt)
      • CHHD Screws
      • Nut and Washers
      • Nylon Nuts and Bolts
      • Spacer and Standoff
    • Soldering Tools
    • Workbench Tools
  • Services
    • PCB Manufacturing Service
    • Custom Battery Pack
    • Online SLA 3D Printing Service
    • Online FDM 3D Printing Service
    • Metal Laser Cutting Service
    • Non-Metal Laser Cutting Service
  • Refurbished & Partial Working
    • Refurbished
    • Partial Working
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All Categories
  • Shop by Brands
  • New Arrivals
  • SimpliFly
    • SimpliFly Agriculture Drone
    • Simplifly FPV Drone Kit
    • SimpliFly ESCs
    • Simplifly Telemetry
  • SmartElex
    • SmartElex Programmer Modules
    • SmartElex Relay Modules
    • SmartElex Display Modules
      • SmartElex HMI Display
      • SmartElex TFT Display
    • SmartElex Power Modules
      • SmartElex Battery Charger Modules
      • SmartElex Boost + Charger Modules
      • SmartElex Boost Converter Modules
      • SmartElex Buck Converter Module
      • SmartElex Buck+Boost Modules
      • SmartElex Solar Charger Modules
    • SmartElex IOT and Wireless
      • SmartElex Bluetooth Modules
      • SmartElex WiFi and Bluetooth module
      • SmartElex GPS Modules
      • SmartElex GPRS Modules
      • SmartElex LORA + WAN Breakout Board
      • SmartElex WiFi Modules
      • SmartElex ZIGBEE Modules
    • SmartElex Logic Level Converter Modules
      • SmartElex Level Shifter Modules
      • SmartElex Multiplexer Modules
      • SmartElex Shift Resister Modules
    • SmartElex Sensor Modules
      • SmartElex Environmental Sensors
      • SmartElex Weather Sensors
      • SmartElex Pressure Sensors
      • SmartElex Temperature Sensors
      • SmartElex Humidity Sensors
      • SmartElex Magnetometer Sensors
      • SmartElex Line Tracking Sensors
      • SmartElex Sound Sensors
    • SmartElex Motor Drivers
      • SmartElex DC Motor Drivers
      • SmartElex Smart Motor Drivers
    • SmartElex Programmer Modules
    • SmartElex Connector Modules
    • SmartElex Development Board
  • Electronic Components
    • Integrated Circuits
      • Microcontroller IC
        • ARM Microcontrollers IC
        • 8-bit Microcontrollers IC
        • 16-bit Microcontrollers IC
        • 32-bit Microcontrollers IC
      • Optocoupler ICs
      • Buffers & Transceivers IC
      • Drivers & Interfaces IC
      • Frequency Management IC
      • Amplifier & Comparator IC
      • MOSFET ICs
      • Sensor ICs
      • Audio IC
      • Memory IC
      • Mux & Demux IC
      • Power management IC
      • Linear voltage regulator IC
      • Clock & Timing IC
      • Switching IC
      • ADC & DAC Converter IC
      • Bluetooth, WIFI and Trans-receiver ICs
      • IC Base
    • Resistors
      • Ceramic Resistors
      • Carbon Resistors
      • Current Sense Resistors
      • Film Resistors
      • High Frequency/RF Resistors
      • Metal Foil Resistors
      • MELF Resistors
      • Thermistor
      • Chassis Mount Resistors
    • Capacitors
      • Ceramic Capacitors
        • Disc Capacitor
        • SLCCs- Single Layer Ceramic Capacitors
        • MLCCs- Multi Layer Ceramic Capacitors
      • Aluminium Electrolytic Capacitors
      • Super Capacitors
      • Film Capacitors
      • Tantalum Capacitors
      • Mica Capacitors
      • Noise Suppression & Safety Capacitors
      • Polymer Capacitors
      • Silicon RF Capacitors
      • Capacitors Kit
    • Inductors
      • Power Inductors
      • RF Inductor
      • Air Core Inductors
      • Coupled Inductors
      • Fixed Value Inductors
      • High Frequency Inductors
      • Multilayer Inductors
      • Thin Film Inductors
      • Charging Coils & Arrays
      • Toroidal Inductors
      • Wirewound Inductors
    • Diodes Kit
    • Crystal , Oscillators
    • Component Kit
    • Panel Indicators & LEDs
      • LED Diode Kit
      • Panel Indicator Lights
      • LEDs with Multi Hole Holders
      • Through Hole DIP LEDs
      • SMD LED
    • Miscellaneous Component
      • Potentiometer & Trimmers
      • Fuse Kits
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
    • PCT Wire Connectors
    • RF Connectors
    • Interface Connector
    • FFC, FPC, Berg connectors
  • DIY & Maker Kits
    • Pro-Range DIY Project Kits
      • Pro-Range Kits for Arduinos
      • Raspberry Pi Kits
      • Pro-Range Electronic Component Kits
    • Humanoid and Biped Robot Kits
    • Educational Robot Kits and Accessories
    • Drone Kit
    • DIY 3D Printer Kits
    • E-bike Kit
    • Raspberry Pi Compatible Kits
    • Kits compatible with Arduino
    • Sensor Kits
    • Component Kit
  • Drone Parts
    • Kits
    • Frames and Accessories
    • Flight Controller & Accessories
    • Motors
    • Speed Controllers (ESC)
    • Drone Propellers
      • Upto 3 Inch
      • 3 Inch to 7 Inch
      • 8 Inch to 10 Inch
      • 11 Inch and Above
      • Carbon Fiber Propeller
      • Triblades
      • Propeller Nuts and Accessories
    • Drone Transmitter & Receiver
    • Antennas
    • FPV Cameras
    • FPV Antenna and Trans-Receivers
    • Accessories
    • Camera Gimbal
  • Electric Vehicle Parts
    • E-Bike Parts
      • E-Bike Motors
      • E-Bike Controllers
      • HMI Display for E-Bikes
      • E-Bike Mechanical Accessories
      • E-Bike Electronics Accessories
      • E-Bike Batteries and Case
        • E-bike Battery
      • E-bike Kit
    • E-Rikshaw Parts
      • E-Rikshaw Motors
      • E-Rikshaw Controllers
    • E-Mini Tricycle Parts
      • E-mini Tricycle Motors
      • E-mini Tricycle Controllers
    • E-Wheelchair Parts
      • E-Wheelchair Motors
      • E-Wheelchair Controllers
    • E-Forklift Parts
      • E-forklift Motors
      • E-forklift Controllers
    • E-Gokarts Parts
      • E-GOKARTS Motors
      • E-GOKARTS Controllers
  • CNC Laser Engraver Machines
    • Atomstack Laser Engraver
    • Two Trees Laser Engraver
    • Creality Laser Engraver
    • CNC Metal Engraver Machine
  • 3D Printers and Parts
    • 3D Printer Filaments & Resins
      • 3D Printer Filaments
        • Pro-Range Filaments
        • eSUN Filaments
        • Numakers Filaments
        • FlashForge Filaments
        • Creality Filaments
        • Sovol Filaments
        • ORANGE Premium Filaments
        • AlmightyFila Filaments
      • 3D Printer Resins
        • eSUN Resins
        • Pro-Range Resins
        • Elegoo Resins
    • 3D Printers
      • Prusa 3D Printers and Parts
      • Elegoo 3D Printers and Parts
      • Anycubic 3D Printers
      • UniFormation 3D Printers
      • Two Trees 3D Printers
      • Phrozen 3D Printers and Parts
      • Creality 3D Printers and Parts
      • BIQU 3D Printers and Parts
      • Bambu Lab 3D Printers
      • FlashForge 3D Printers
      • Goofoo 3D printer
      • Sovol 3D Printers
      • Other 3D Printers
    • 3D Printing Pen
    • Electronics Parts
      • 3D Printer Display and Controllers
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
      • Nema Stepper Motors
      • 3D Printer Display and Controller
      • 3D Printer Limit Switch
    • Mechnical Parts
      • 3D Printer Heatbed Assembly
      • 3D Printer Nozzle
      • Lead Screw and Nut
      • Linear Rail Guides
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • 3D Printer Coupling
      • Timing Belt and Pulley
      • Sleeves and Drag Chain
  • Batteries, Chargers and Accessories
    • Custom Battery Pack
    • Orange Lithium Polymer (Lipo) Battery Pack
      • 1 Cell (3.7-4.2)V
      • 2 Cell (7.4-8.4)V
      • 3 Cell (11.1-12.6)V
      • 4 Cell (14.8-16.8)V
      • 6 Cell (22.2-25.2)V
    • Single Cell Micro LiPo Battery
    • Lithium-Ion Batteries
      • 1 Cell Li-Ion Battery Pack (3.6V~4.2V)
      • 2 Cell Li-Ion Battery Pack (7.4V~8.4V)
      • 3 Cell 12V Li-Ion Battery Pack (11.1V~12.6V)
      • 4 Cell 15V Li-Ion Battery Pack (14.8V~16.8V)
      • 5 ~ 7 Cell Li-Ion Battery Pack
      • 6 Cell 24V Li-Ion Battery Pack (22.2V~25.2V)
      • 10 Cell 36V Li-Ion Battery Pack (36V~42V)
      • 13 Cell 48V Li-Ion Battery Pack (46.8V~54.6V)
    • LiFePO4 (LFP) Prismatic Battery Cell
    • Other Batteries
      • Button Cell / Coin Cell Battery
      • CNC and PLC Machine Battery
    • Battery Accessories
      • Battery Protection Board
      • Battery Holders and Spacers
      • Multi-brand Battery Chargers
      • Battery Connectors
      • Battery Harness
      • Lipo Voltage Checker
      • Parallel Charging Board
      • Lipo Battery Sack, Straps and Case
  • Motors, Drivers, Actuators
    • DC Planetary Gear Motors
      • Pro-Range High Torque Planetary Gears Motors
      • Orange Planetary Geared BLDC Motors
      • Cytron DC Planetary Geared Motors
    • Brushed DC Motor
      • Pro-Range 12V Johnson Geared Motor
      • Johnson Geared Motor (Grade B)
      • DC Motor with Encoder
      • 25 GA Motors
      • Pro-Range 12V OG 555 DC Gear Motor
      • RS 50 Geared Motor
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HomeBlogsIOT and WirelessStep-By-Step Guide: How To Build Your Own IoT Water Level Indicator with Nodemcu ?

Step-By-Step Guide: How To Build Your Own IoT Water Level Indicator with Nodemcu ?

IOT and Wireless, Microcontroller, Proximity Sensor, Uncategorized, WiFi  0  comments  3189 Views  Monday, May 15, 2023











At places where water tanks are installed there is a need for making the tank filling process automatic as there will be no wastage of water. At some places there

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At places where water tanks are installed there is a need for making the tank filling process automatic as there will be no wastage of water. At some places there is a person operating the pump motor who just needs to get the indication that the tank is full or empty. At such places a IoT water level indicator is very useful as the water level can be viewed from anywhere using a smartphone application. In this blog we are going to give you step by step instructions such that you can build your own IoT water level indicator using nodeMCU and ultrasonic sensor HC-SR04.

As we are using ultrasonic sensor. Which uses ultrasound to detect the fluid level. The sensor doesn’t needs to be in contact with the fluid and that’s why It can be used for any fluid other than water like oil, chemicals and beverages.

In this project we are using the blynk IoT cloud platform. The fluid level can be viewed from smartphone using the blynk Iot application or from PC using blynk web dashboard. The circuit is easy to make. The main crux lies in getting the blynk platform to interact with nodeMCU. So let’s start with project.

Components required

  1. ESP8266 nodeMCU
  2. Ultrasonic sensor HC SR04
  3. Jumper wires (F to F) – 4 pcs

Circuit diagram

circuit diagram of IoT water level indicator using nodeMCU and Blynk

In the above circuit diagram the HC-SR04 module is connected to nodeMCU. The trigger pin is of HC-SR04 is connected to D6(GPIO12) and echo pin is connected to D5(GPIO14). The Vin pin outputs 5V as we are not connecting external 5V supply but taking from the USB com port of laptop. So Vin is connected to Vcc of HC-SR04 and GND is connected to GND of HC-SR04

About HC-SR04 ultrasonic sensor and it’s working?

The HC-SR04 ultrasonic sensor is popularly used in detection of obstacles and distance measurement. It has four pins, gnd, Echo, Trig and Vcc. The vcc and gnd pins are connected to the DC power source. Trig pin is used to trigger the ultrasound transmitter. Once the ultrasound is generated it is reflected back from the obstacle. The echo pin stays high for the time the sound is transmitted and received back by the receiver.

Working of HC-SR04 along with speed and distance formula

The working of this sensor is simple. The transmitter generates ultrasound when the trig pin is given a short pulse of 10 microseconds and at the same time the echo pin goes high. During this time the receiver is listening for ultrasound. The sound bounces from the obstacle and hits the receiver. The receiver picks up the ultrasound and the echo pin goes low. This means that the echo pin was high for the time the sound takes to go and come back.

As the speed of sound is 340m/s. The distance can be calculated using the formula.

Distance = Speed * Time.

As the time needs to be divided by 2 because it’s the total time sound takes to reach the object and bounce back. So the formula becomes.

Distance = Speed * Time/2

In this way this sensor can be used with a microcontroller and programmed accordingly to get the distance from the obstacle. In this project we are using a ESP8266 nodeMCU because we want to stream the water level on blynk cloud platform. So lets understand what is blynk and create a blynk account first.

What is Blynk?

Blynk is a mobile and web application platform that enables users to remotely control and monitor Internet of Things (IoT) devices. With Blynk, users can create custom apps for Android and iOS devices to interact with IoT hardware such as Arduino, Raspberry Pi, and ESP8266, among others. The platform offers a drag-and-drop interface to create a graphical user interface (GUI) for controlling and monitoring devices.

The platform also offers cloud services for storing data and facilitating communication between devices. Blynk is widely used by hobbyists and makers, as well as by professionals developing commercial IoT solutions.

Steps to create Blynk account

Step1 – Go to Blynk website and click on “start free”.

start free on blynk website

Step2 – Enter your email ID and tick the check box and click on “sign up”.

creating account on blynk

Step3 - You will receive an email by Blynk to create password. Click on “Create password”. Set a strong password and your account will be created.

email notification by blynk while making account

Step4 – Go through the blynk tour, read about blynk and and click on “Finish”

creating blynk account

Step5 – Blink will ask you to create a Quickstart template. Click on “cancel”.

Creating account on blynk

 

Step6 – Account is now created and you will see this page where all billing details are given.

Page opens after account is created on Blynk

Steps for Creating a blynk template.

Now that the account is created let’s create blynk template

Step1- Go to “templates” and click on “New template”

Creating Blynk template

Step2-  Give your template a name, select proper hardware board , connection type and description.

Fill Blynk template credentials

Step3 – Your template is now created. You will get “Template ID” and “Template name” under firmware configurations. Copy and save those credentials as it’s going to be used further in our code.

After Blynk template is created

What is a datastream?  Creating a datastream.

Datastream is a memory space given by Blynk on their server. It is to store our data which is received by the microcontroller pin and can be passed to a virtual pin datastream using blynk functions like “blynk.virtualWrite()”. A virtual pin is a type of datastream which can hold numerical data.

Step1 – Go to datastream and create a virtual pin datastream.

Creating virtual pin datastream on Blynk

Step2- Give virtual pin a name, select proper datatype and range. As the HC-SR04 can measure only up to 400cm. I have given a range from 0 to 400cm. Also units is “centimetres”. Next, click on create. Datastream is now created.

Fill the credentials of virtual pin datastream.

Now we are ready for the Arduino IDE part. If it’s your first time with ESP module then go through this beginners guide blog. It will guide you on how to make ESP boards compatible with Arduino IDE.

Open the Arduino IDE.

  1. Installing the blynk library.

how to install the blynk library?

Code

Upload the below given code

#define BLYNK_TEMPLATE_ID "Your id"

#define BLYNK_TEMPLATE_NAME "your name"

#define BLYNK_FIRMWARE_VERSION        "0.1.0"

#define BLYNK_PRINT Serial

#define APP_DEBUG

#include "BlynkEdgent.h"

BlynkTimer timer;

 

const int trigPin = 12;

const int echoPin = 14;

 

//define sound speed in cm/uS

#define SOUND_SPEED 0.034

 

long duration;

int distanceCm;

 

void myTimer()

{

  Blynk.virtualWrite(V0,distanceCm);  

  delay(1000);  

}

 

void setup() {

  Serial.begin(115200);

  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output

  pinMode(echoPin, INPUT);

  delay(100);

  timer.setInterval(1000L, myTimer);

  BlynkEdgent.begin();

}

 

void loop() {

 digitalWrite(trigPin, LOW);

 delayMicroseconds(2);

 digitalWrite(trigPin, HIGH);

 delayMicroseconds(10);

 digitalWrite(trigPin, LOW);

 

  // Reads the echoPin, returns the sound wave travel time in microseconds

 duration = pulseIn(echoPin, HIGH);

 distanceCm = duration * SOUND_SPEED/2;

 

 Serial.print("Distance (cm): ");

 Serial.println(distanceCm);  

 

 delay(500);

 BlynkEdgent.run();

 timer.run();

}

 

After the code is uploaded then open the serial monitor and reset the board. The name of “Blynk” will appear. At the end you should see the “AP URL:  blynk.setup” this means you are ready for next step, that is to create the Blynk device.

After uploading the code you should see this

Creating blynk device using the blynk mobile application.

Keep the nodeMCU connected to the com port of your pc or laptop and also keep the “Serial monitor” open so that you can see the status after each step is executed.

Step1 – Download the Blynk mobile app from the Google Play Store. Its also available on IOS.

Step2 – After downloading open the Blynk app and click on “Add New Device” >> “find nearby devices” >> start >> continue.

Steps for creating blynk device using blynk app

Wireless Settings >> Click on the ESP device Access point >> connect to the wifi network >> wait till device goes online.

Steps for creating blynk device using blynk application.

After device is connected click on “finish”>> click on the settings icon >> add the “gauge” from the widget box from dashboard

Steps for creating blynk device using blynk application

The device is now created along with the dashboard.

IoT device is created and the data is visualized using widget

The changes we make on dashboard by using blynk app are also updated on the blynk web dashboard. The website and app both are linked. Now we can view water level from blynk app and also from blynk website.

Conclusion

In this way we created a IoT water level indicator using the blynk app. The water level can be viewed from a remote location. If you have any doubt regarding any part of this blog then feel free to comment it. Our team will be there to assist you.

Check out our YouTube channel for more interesting electronic project videos.

 



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