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Robu.in | Indian Online Store | RC Hobby | Robotics
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      • Component Kit
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      • Inductor
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      • Diode
      • Transistor
      • Crystal Oscillators
    • Semiconductor ICs
      • Microcontroller ICs
      • Interface ICs
      • Clock, Timer and Counter ICs
      • Sensor ICs
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      • Encoder ICs
      • Audio ICs
      • IC Base
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      • Through Hole LED
      • SMD LED
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      • Potentiometer
      • Fuse
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
    • Mechanical Switches
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    • Interface Connector
    • Berg / FPC / IDC Connector
  • DIY Learning and Robot Kits
    • Orange Premium Learning Kits
      • Orange Kits for Arduinos
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      • Orange Electronic Component Kits
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    • Ebike Kit
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    • Sensor Kits
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  • 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 Antennas and Trans-Receivers
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    • Camera Gimbal
  • E-Bike Parts
    • Ebike Kit
    • Ebike Motor and Controller
    • Ebike Battery
    • Mechanical Accessories
    • Electronics Accessories
  • 3D Printers and Parts
    • Creality 3D Printers
    • Electronics Parts
      • 3D Printer Display and Controllers
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
      • Stepper Motors and Accessories
      • 3D Printer Display and Controller
      • Limit Switch
    • Mechnical Parts
      • 3D Printer Heatbed and Accessories
      • 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
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      • ORANGE Premium Filaments
      • ESUN Filaments
      • Resins
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    • Custom Battery Pack
    • Lemon Premium Li-PO Battery
      • 2S Lipo (7.4V ~ 8.4V)
      • 3S Lipo (11.1V ~ 12.6V)
      • 4S Lipo (14.8V ~ 16.8V)
      • 6S LiPo (22.2V ~ 25.2V)
    • Orange LiPO Battery
      • 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
    • Micro LiPo Batteries
    • Lithium-Ion Batteries
      • 1 cell (3.7V~4.2V)
      • 2 Cell (7.4V~8.4V)
      • 3 Cell (11.1V~12.6V)
      • 4 Cell (14.8V~16.8V)
      • 5 Cell (18.5V) & Above
    • Orange Premium BMS
    • Other Batteries
      • TX/RX Li-PO Batteries
      • LifePO4 Battery
      • Coin Cell Battery
      • CNC and PLC Machine Battery
    • Battery Accessories
      • Battery Protection Board
      • Battery Pack Accessories & Holders
      • Battery Chargers
      • Battery Connector
      • Battery Harness
      • Power Adapter and Cable
      • Lipo Voltage Checker
      • Parallel Charging Board
      • LiPO Battery Sack, Covers & Mats
  • Motors, Drivers, Actuators
    • Planetary Gear Motor
      • Orange Planetary Gears Motor
      • Orange Planetary BLDC Motors
      • Planetary Gear DC Motors
    • Brushed DC Motor
      • Orange Johnson Geared Motor
      • Johnson Geared Motor (Grade B)
      • DC Geared Motor with Encoder
      • 25 GA Motors
      • Orange OG 555 DC Motor
      • RS 50 Geared Motor
      • Orange RS 775 DC Motor
      • Orange PM33 Motor
      • Orange Square Gear Box Motor
      • Orange Rectangular Gearbox Motor
    • N20 Micro Gear Motor
      • Micro Gear Motor with Encoder
      • Micro Gear Motor without Encoder
    • Stepper Motor
    • Servo Motors
      • Orange RC Servo Motors
      • Emax Servo Motor
      • Other Servo motor
    • Pumps
      • Kamoer High Quality Pumps and Accessories
      • Generic Pumps
      • Pneumatic Connectors and Valves
    • Cooling Fans
    • Linear Motor/Actuator
    • Solenoids & Electromagnets
    • Other DC Motors
      • BO Motors
      • Metal Gear Box Motor
      • Plastic Gear Box Motors
      • Vibration Motor
      • Drone Motor
    • Motor Drivers
      • Brushed DC Motor Driver
      • Servo Motor Driver
      • Stepper Motor Drivers
      • Brushless DC Motor Driver (ESC)
    • Motor Accessories
      • Motor Mounting Brackets
      • Bearings
      • Couplings
      • JR Servo Cable
      • Futaba Servo Cable
      • Push Rod
      • Other Accessories
  • Development Board
    • Official Arduino Boards
      • Original Arduino Boards
      • Official Arduino Shields
      • Official Arduino Kits
    • Raspberry Pi
    • 8051 Board
    • Single Board Computer
    • Teensy Board
    • Udoo Board
    • ARM Microcontroller
    • PIC Development board
    • Programmers
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      • Boards
      • Shields
      • USB Cables for Arduino
      • Displays
      • Case for Arduino
  • Official Arduino Boards
    • Original Arduino Boards
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    • Official Boards and Hats
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    • Display
    • Camera
    • Raspberry Pi Hats
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  • Displays
    • HMI LCD Display
    • LCD Displays
    • OLED Display
    • e-Ink Display
    • Seven Segment LED Display
    • LED Dot Matrix Display
  • Sensors
    • Sensor Kits
    • Ultrasonic and Proximity
      • MAXBOTIX Ultrasonic Sonar
      • Ultrasonic Sensor
      • Orange Proximity Sensor
      • Autonics Proximity Sensor
      • Other Proximity Sensor & Modules
      • LiDAR Sensor
      • Other 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
    • Biometric, Rotation, and Current
      • Biometric/ECG/EMG Sensor
      • Rotary Encoder
      • Current and Voltage
    • Load, Pressure, Flow & Vibration
      • Water TDS, pH, Flow, Level and Pressure Sensor
      • Vibration/Tilt Sensor and Modules
      • Load / Pressure / Force / Flex Sensor
  • Cameras
    • IoT Cameras
    • FPV Cameras
    • Smart Vision Camera
    • Thermal Cameras
    • Raspberry Pi Camera
  • IoT and Wireless
    • Ai Thinker ESP Modules and Development Boards
    • ESP WiFi Module
    • Development Board/Kit
    • xBee Zigbee Module
    • LORA WiFi
    • Bluetooth and NRF Modules
    • GSM / GPRS Modules
    • Transmitter and Receivers
    • Advance Controller Board
    • Wireless Smart Switches
  • Electronic Modules
    • Programming Module
    • Memory Interfacing
    • Communication Module
    • Bluetooth Interfacing
    • Ethernet Module
    • Interface Module
    • LED Module
    • LASER Module
    • Addressable LED and Drivers
    • Breakout Board
    • Relay Switch Modules
    • Electronic Switches/Keypads
    • Solar Panels and Controllers
    • Wearable Electronic
    • Real Time Module (RTC)
    • Audio Module/ Amplifier
    • Mux-DeMux & Logic Converter
    • Voltage Regulator
      • Boost Converter (Step-Up )
      • Buck Converter (Step-Down)
    • Measuring Instruments
      • Digital Multimeter
      • Temperature Meter
      • Digital Voltage, Current and Frequency Meter
      • Oscilloscope & Signal Generator
      • Other Measuring Instrument
    • Power Supply
      • Transformers
      • SMPS
      • Hi-Link Power Supply Module
    • Displays
  • Wires and Cables
    • PVC and Silicone Wires
      • PVC Wire
      • 6 to 10 AWG
      • 12 to 16 AWG
      • 18 to 22 AWG
      • 24 to 30 AWG
    • Multi-Color Project Cables
      • DuPont / Jumper Cable
      • Interfacing 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
    • Tools and Accessories
      • Wire Cutter / Stripper
      • Cable Ties
      • Sleeves and Drag Chain
  • Mechanical Components and Workbench Tools
    • Mechanical Robotic Parts
      • Chassis
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • Lead Screw
      • Linear Rail Guides
      • Couplings
      • Bearings
      • Motor Mounting Brackets
      • Gears
    • Wheels
      • Mecanum Wheels
      • Omni Wheels
      • Heavy Duty Wheel
      • RC Car Wheel
      • Pulley Wheel & Track Belt
      • Caster Wheels
    • Carbon Fiber
      • Carbon Fiber Sheets and Strips
      • Carbon Fiber Tubes and Rods
    • Nuts-Bolts 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
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All Categories
  • Shop by Brands
  • New Arrivals
  • Refurbished
  • Partial Working
  • Electronic Components
    • Basic Electronic Components
      • Component Kit
      • Resistor
      • Inductor
      • Capacitor
      • Diode
      • Transistor
      • Crystal Oscillators
    • Semiconductor ICs
      • Microcontroller ICs
      • Interface ICs
      • Clock, Timer and Counter ICs
      • Sensor ICs
      • Optocoupler ICs
      • Converter ICs
      • Comparator ICs
      • Driver ICs
      • Encoder ICs
      • Audio ICs
      • IC Base
    • LEDs and Indicators
      • LEDs Kit
      • Pilot Lamp Indicator
      • LEDs with Holders
      • Through Hole LED
      • SMD LED
    • Miscellaneous Component
      • Potentiometer
      • Fuse
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
    • Mechanical Switches
    • Power Connectors
    • RF Connectors
    • Interface Connector
    • Berg / FPC / IDC Connector
  • DIY Learning and Robot Kits
    • Orange Premium Learning Kits
      • Orange Kits for Arduinos
      • Orange Kits for Raspberry Pi
      • Orange Electronic Component Kits
      • Orange DIY Mini Project Kits
    • DIY Hobby Project Parts
    • Robot Kits and Parts
    • Drone Kit
    • DIY 3D Printer Kits
    • Ebike Kit
    • Official Raspberry Pi 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 Antennas and Trans-Receivers
    • Accessories
    • Camera Gimbal
  • E-Bike Parts
    • Ebike Kit
    • Ebike Motor and Controller
    • Ebike Battery
    • Mechanical Accessories
    • Electronics Accessories
  • 3D Printers and Parts
    • Creality 3D Printers
    • Electronics Parts
      • 3D Printer Display and Controllers
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
      • Stepper Motors and Accessories
      • 3D Printer Display and Controller
      • Limit Switch
    • Mechnical Parts
      • 3D Printer Heatbed and Accessories
      • 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
    • 3D Printer Filaments
      • ORANGE Premium Filaments
      • ESUN Filaments
      • Resins
  • Batteries, Chargers and Accessories
    • Custom Battery Pack
    • Lemon Premium Li-PO Battery
      • 2S Lipo (7.4V ~ 8.4V)
      • 3S Lipo (11.1V ~ 12.6V)
      • 4S Lipo (14.8V ~ 16.8V)
      • 6S LiPo (22.2V ~ 25.2V)
    • Orange LiPO Battery
      • 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
    • Micro LiPo Batteries
    • Lithium-Ion Batteries
      • 1 cell (3.7V~4.2V)
      • 2 Cell (7.4V~8.4V)
      • 3 Cell (11.1V~12.6V)
      • 4 Cell (14.8V~16.8V)
      • 5 Cell (18.5V) & Above
    • Orange Premium BMS
    • Other Batteries
      • TX/RX Li-PO Batteries
      • LifePO4 Battery
      • Coin Cell Battery
      • CNC and PLC Machine Battery
    • Battery Accessories
      • Battery Protection Board
      • Battery Pack Accessories & Holders
      • Battery Chargers
      • Battery Connector
      • Battery Harness
      • Power Adapter and Cable
      • Lipo Voltage Checker
      • Parallel Charging Board
      • LiPO Battery Sack, Covers & Mats
  • Motors, Drivers, Actuators
    • Planetary Gear Motor
      • Orange Planetary Gears Motor
      • Orange Planetary BLDC Motors
      • Planetary Gear DC Motors
    • Brushed DC Motor
      • Orange Johnson Geared Motor
      • Johnson Geared Motor (Grade B)
      • DC Geared Motor with Encoder
      • 25 GA Motors
      • Orange OG 555 DC Motor
      • RS 50 Geared Motor
      • Orange RS 775 DC Motor
      • Orange PM33 Motor
      • Orange Square Gear Box Motor
      • Orange Rectangular Gearbox Motor
    • N20 Micro Gear Motor
      • Micro Gear Motor with Encoder
      • Micro Gear Motor without Encoder
    • Stepper Motor
    • Servo Motors
      • Orange RC Servo Motors
      • Emax Servo Motor
      • Other Servo motor
    • Pumps
      • Kamoer High Quality Pumps and Accessories
      • Generic Pumps
      • Pneumatic Connectors and Valves
    • Cooling Fans
    • Linear Motor/Actuator
    • Solenoids & Electromagnets
    • Other DC Motors
      • BO Motors
      • Metal Gear Box Motor
      • Plastic Gear Box Motors
      • Vibration Motor
      • Drone Motor
    • Motor Drivers
      • Brushed DC Motor Driver
      • Servo Motor Driver
      • Stepper Motor Drivers
      • Brushless DC Motor Driver (ESC)
    • Motor Accessories
      • Motor Mounting Brackets
      • Bearings
      • Couplings
      • JR Servo Cable
      • Futaba Servo Cable
      • Push Rod
      • Other Accessories
  • Development Board
    • Official Arduino Boards
      • Original Arduino Boards
      • Official Arduino Shields
      • Official Arduino Kits
    • Raspberry Pi
    • 8051 Board
    • Single Board Computer
    • Teensy Board
    • Udoo Board
    • ARM Microcontroller
    • PIC Development board
    • Programmers
    • Advance Development Boards
    • Compatible with Arduino Boards
      • Boards
      • Shields
      • USB Cables for Arduino
      • Displays
      • Case for Arduino
  • Official Arduino Boards
    • Original Arduino Boards
    • Official Arduino Shields
    • Official Arduino Kits
  • Raspberry Pi
    • Official Boards and Hats
    • Official Accessories
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    • Display
    • Camera
    • Raspberry Pi Hats
    • Accessories
  • Displays
    • HMI LCD Display
    • LCD Displays
    • OLED Display
    • e-Ink Display
    • Seven Segment LED Display
    • LED Dot Matrix Display
  • Sensors
    • Sensor Kits
    • Ultrasonic and Proximity
      • MAXBOTIX Ultrasonic Sonar
      • Ultrasonic Sensor
      • Orange Proximity Sensor
      • Autonics Proximity Sensor
      • Other Proximity Sensor & Modules
      • LiDAR Sensor
      • Other 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
    • Biometric, Rotation, and Current
      • Biometric/ECG/EMG Sensor
      • Rotary Encoder
      • Current and Voltage
    • Load, Pressure, Flow & Vibration
      • Water TDS, pH, Flow, Level and Pressure Sensor
      • Vibration/Tilt Sensor and Modules
      • Load / Pressure / Force / Flex Sensor
  • Cameras
    • IoT Cameras
    • FPV Cameras
    • Smart Vision Camera
    • Thermal Cameras
    • Raspberry Pi Camera
  • IoT and Wireless
    • Ai Thinker ESP Modules and Development Boards
    • ESP WiFi Module
    • Development Board/Kit
    • xBee Zigbee Module
    • LORA WiFi
    • Bluetooth and NRF Modules
    • GSM / GPRS Modules
    • Transmitter and Receivers
    • Advance Controller Board
    • Wireless Smart Switches
  • Electronic Modules
    • Programming Module
    • Memory Interfacing
    • Communication Module
    • Bluetooth Interfacing
    • Ethernet Module
    • Interface Module
    • LED Module
    • LASER Module
    • Addressable LED and Drivers
    • Breakout Board
    • Relay Switch Modules
    • Electronic Switches/Keypads
    • Solar Panels and Controllers
    • Wearable Electronic
    • Real Time Module (RTC)
    • Audio Module/ Amplifier
    • Mux-DeMux & Logic Converter
    • Voltage Regulator
      • Boost Converter (Step-Up )
      • Buck Converter (Step-Down)
    • Measuring Instruments
      • Digital Multimeter
      • Temperature Meter
      • Digital Voltage, Current and Frequency Meter
      • Oscilloscope & Signal Generator
      • Other Measuring Instrument
    • Power Supply
      • Transformers
      • SMPS
      • Hi-Link Power Supply Module
    • Displays
  • Wires and Cables
    • PVC and Silicone Wires
      • PVC Wire
      • 6 to 10 AWG
      • 12 to 16 AWG
      • 18 to 22 AWG
      • 24 to 30 AWG
    • Multi-Color Project Cables
      • DuPont / Jumper Cable
      • Interfacing 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
    • Tools and Accessories
      • Wire Cutter / Stripper
      • Cable Ties
      • Sleeves and Drag Chain
  • Mechanical Components and Workbench Tools
    • Mechanical Robotic Parts
      • Chassis
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • Lead Screw
      • Linear Rail Guides
      • Couplings
      • Bearings
      • Motor Mounting Brackets
      • Gears
    • Wheels
      • Mecanum Wheels
      • Omni Wheels
      • Heavy Duty Wheel
      • RC Car Wheel
      • Pulley Wheel & Track Belt
      • Caster Wheels
    • Carbon Fiber
      • Carbon Fiber Sheets and Strips
      • Carbon Fiber Tubes and Rods
    • Nuts-Bolts 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
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      • Component Kit
      • Resistor
      • Inductor
      • Capacitor
      • Diode
      • Transistor
      • Crystal Oscillators
    • Semiconductor ICs
      • Microcontroller ICs
      • Interface ICs
      • Clock, Timer and Counter ICs
      • Sensor ICs
      • Optocoupler ICs
      • Converter ICs
      • Comparator ICs
      • Driver ICs
      • Encoder ICs
      • Audio ICs
      • IC Base
    • LEDs and Indicators
      • LEDs Kit
      • Pilot Lamp Indicator
      • LEDs with Holders
      • Through Hole LED
      • SMD LED
    • Miscellaneous Component
      • Potentiometer
      • Fuse
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
    • Mechanical Switches
    • Power Connectors
    • RF Connectors
    • Interface Connector
    • Berg / FPC / IDC Connector
  • DIY Learning and Robot Kits
    • Orange Premium Learning Kits
      • Orange Kits for Arduinos
      • Orange Kits for Raspberry Pi
      • Orange Electronic Component Kits
      • Orange DIY Mini Project Kits
    • DIY Hobby Project Parts
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    • DIY 3D Printer Kits
    • Ebike Kit
    • Official Raspberry Pi Kits
    • Kits compatible with Arduino
    • Sensor Kits
    • Component Kit
  • Drone Parts
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    • 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 Antennas and Trans-Receivers
    • Accessories
    • Camera Gimbal
  • E-Bike Parts
    • Ebike Kit
    • Ebike Motor and Controller
    • Ebike Battery
    • Mechanical Accessories
    • Electronics Accessories
  • 3D Printers and Parts
    • Creality 3D Printers
    • Electronics Parts
      • 3D Printer Display and Controllers
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
      • Stepper Motors and Accessories
      • 3D Printer Display and Controller
      • Limit Switch
    • Mechnical Parts
      • 3D Printer Heatbed and Accessories
      • 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
    • 3D Printer Filaments
      • ORANGE Premium Filaments
      • ESUN Filaments
      • Resins
  • Batteries, Chargers and Accessories
    • Custom Battery Pack
    • Lemon Premium Li-PO Battery
      • 2S Lipo (7.4V ~ 8.4V)
      • 3S Lipo (11.1V ~ 12.6V)
      • 4S Lipo (14.8V ~ 16.8V)
      • 6S LiPo (22.2V ~ 25.2V)
    • Orange LiPO Battery
      • 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
    • Micro LiPo Batteries
    • Lithium-Ion Batteries
      • 1 cell (3.7V~4.2V)
      • 2 Cell (7.4V~8.4V)
      • 3 Cell (11.1V~12.6V)
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HomeBlogsESP32 temperature sensor tutorial: How to Stream real-time data to ThingSpeak

ESP32 temperature sensor tutorial: How to Stream real-time data to ThingSpeak

Blogs, IOT and Wireless, Microcontroller/Microprocessor, Tutorials, Uncategorized, WiFi  0  comments  152 Views  Friday, April 28, 2023











This is a simple IoT project that will send the temperature data from ESP-32 to thingspeak server. This will enable us to view the room temperature data from anywhere in

Stream Sensor Data To Thingspeak Cloud Using Esp32 And Dht11

This is a simple IoT project that will send the temperature data from ESP-32 to thingspeak server. This will enable us to view the room temperature data from anywhere in this world through internet. The way we are going to do it is by using API provided by thingspeak.

What is API?

simple depiction of API using image

API stands for Application Programming Interface and it is the link between our software application and the website. If we want data from website to use in our application then we need the API. To understand API in better way lets assume that the website is a restaurant and our program/application is customer and the food is data. So to get the food, customer needs to give the dish name to the waiter from the menu card, along with that the waiter also notes the table number and gives that information to the kitchen staff. In similar way our program also requests data from website by posting the information like API key, topic parameter in the form of URL. This URL is API. If the API key matches the API key given to us by the website then the response is given by the website and the program gets the data.

In our project we are just posting the temperature data to Thingspeak server and not requesting any data. So first lets see how to get API from Thingspeak , publish data using API and then make the hardware connections.

What is ThingSpeak?

ThingSpeak is a IoT cloud platform service that allows us to visualize live data streams in the cloud. We can send data to ThingSpeak from our devices and create instant visualization of live data.

Components required

  1. ESP-32 dev board
  2. DHT-11 temperature and humidity sensor
  3. Jumper wire (M to M) – 3pcs
  4. USB micro cable

Getting API from Thingspeak and testing it

First we need to create an account on Thingspeak. Follow the below given steps-

Open the Thingspeak website then click on “sign in” in top right corner.

ThingSpeak website sign in location

2. Click on “create one”.

create a new account

3. Fill all the credentials and click on “continue”. Then you will get a verification link on your registered email ID . Click on that link. Set your password and your account will be created. Then you just login to Thingspeak.

account information page on thingspeak

 

4. After you logged in you will see this page. Click on “new channel”

create new channel

  1. Give your channel a name, description, and Field1 name. As we are using only one field for temperature.

ThingSpeak channel credentials

  1. New channel is now created. You will also see a blank chart displayed in private view. Click on API keys.

find API keys in thingspeak

  1. Under API requests copy this URL. Through this URL we publish data to the channel field.

find API keys in thingspeak

  1. Paste this URL in the address bar and assign the field parameter, any number or you can keep it zero. Then hit “enter”.

paste API link in address bar to update data to thingspeak channel

  1. Now open your channel , go to private view and view your chart. The field value will be updated to the chart and you will see a red horizontal line corresponding to your value.

If the value is not updated, try reloading the page.

This indicates that the API is working and can be used in our program. Now that we have tested the API, lets make the hardware connections for the project.

Circuit diagram

Make the connections as per below given circuit diagram

Circuit diagram of ESP32 with DHT11 sensor.

The DHT-11 temperature sensor has 3 pins, ground, vcc and data. It sends calibrated temperature output in degree Celsius on the data line. The data pin is connected on GPIO 5 of ESP-32.  It’s temperature range is from 0 to 50 degree Celsius. It’s operating voltage is 3V to 5V.  So we can directly give it 3.3V from ESP-32 and get the room temperature readings.

Once the connections are done. Connect the ESP-32 to COM port through USB cable and open the Arduino IDE.

Install the DHT-11 library

Open library manager and search for “DHT11” and install the “DHT sensor library by Adafruit”

How to install DHT11 library in Arduino IDE?

The DHT-11 sensor will now work with our program as it’s library is installed.

Go to tools and select the board “ESP32 Dev Module” and select the proper com port according to the device manager. If you are beginner to ESP boards and want ESP boards to be added in Arduino IDE then refer this beginners guide blog.

Now we are done with all setup. Before uploading the code, modify it according to your WiFi ssid and password. Also assign your “write API key” to the apiKey parameter which you will get from your Thingspeak channel under API keys.

How to get write API key?

Upload the below given code. Open the serial monitor to see the status. Set baud rate to "115200". As soon as it will connect to WiFi, It will start publishing room temperature after interval of 10 seconds. You can change this interval by changing the delay in the “void loop()”.

If the value is updated you will get response code “-1” if you got “400” that means there is error.

Code

#include <WiFi.h>

#include <HTTPClient.h>

#include "DHT.h"

 

#define DHTPIN 5

#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

 

const char* ssid = "your WiFi ssid";

const char* password = "Your WiFi password";

// Domain Name with full URL Path for HTTP POST Request

const char* serverName = "http://api.thingspeak.com/update";

// write API Key provided by thingspeak

String apiKey = "your write API key";

 

void setup() {

  Serial.begin(115200);

  WiFi.begin(ssid, password);

  dht.begin();

 

  Serial.println("Connecting");

  while(WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.println("");

  Serial.print("Connected to WiFi network with IP Address: ");

  Serial.println(WiFi.localIP());

}

void loop() {

  if(WiFi.status()== WL_CONNECTED){

      WiFiClient client;

      HTTPClient http;

      delay(10000); // wait for 10 seconds

     //float h = dht.readHumidity();

      float t = dht.readTemperature();

 

      if (isnan(t)) {

       Serial.println(F("Failed to read from DHT sensor!"));

       return;

      }

   

      // Your Domain name with URL path or IP address with path

      http.begin(client, serverName);

     

      // Specify content-type header

      http.addHeader("Content-Type", "application/x-www-form-urlencoded");

      // Data to send with HTTP POST

      String httpRequestData = "api_key=" + apiKey + "&field1=" + String(t);          

      // Send HTTP POST request

      int httpResponseCode = http.POST(httpRequestData);

     

      /*

      // If you need an HTTP request with a content type: application/json, use the following:

      http.addHeader("Content-Type", "application/json");

      // JSON data to send with HTTP POST

      String httpRequestData = "{\"api_key\":\"" + apiKey + "\",\"field1\":\"" + String(random(40)) + "\"}";          

      // Send HTTP POST request

      int httpResponseCode = http.POST(httpRequestData);*/

     

      Serial.print("HTTP Response code: ");

      Serial.println(httpResponseCode);

 

      http.end();

    }

    else {

      Serial.println("WiFi Disconnected");

    }

}

 

Conclusion

In this way we created a simple IoT project which sends temperature sensor data from ESP32 to ThingSpeak server. If you have any doubt regarding any part of this blog, feel free to comment. Our team will be there to assist you.

For more interesting projects check out our YouTube channel.


Tags : DHT11 , ESP32 , Thingspeak

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