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3D Printing Cleaning Filament 100grams 2.85mm
Price: $9.95
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MK-Filament Item #: MK-Cleaning300 -

Cleaning Filament is valuable when transitioning between filaments that require different printing temperatures or have very different colours. Cleaning Filament cannot be used to create objects, instead it is a complementary filament to properly maintain your 3D printer.You can use Cleaning Filament to purge the tool head of your 3D printer when going from a high temperature filament to a lower temperature filament, or when transitioning from a dark colour filament to a light colour filament....

3D Printing Removal Tool
Price: $9.99
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MK-Misc Item #: MK-3DTool -

3D Printing Removal ToolFully polished high quality carbon steel, flexible blade, full tang & comfort grip handle.Used for easily removing your print jobs off the printer bedErgonomic handle for comfort gripFlexible blade

3MM Infrared Emitter (5pcs Pack)
Price: $0.66
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Elecrow Item #: EL-COI03474E -

    3MM infrared emitter for remote controllers, please download the detailed specification Here. Specification Wavelength: 940 nm Max infrared power : 100 mW/sr Angle: <30 degree Forward voltage: 0.9~1.3V Soldering Temperature: < 260?C/<5s Life: > 80,000h ...

3mm LED Dual Color - Red/Green Common Anode(5Pcs)
Price: $1.66
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Elecrow Item #: EL-CLB30003A -

    This red and green dual color LED have 3 pins - Anode is the longest pin. The other 2 pins for each color-Red& Green. This LED can be used for status indicators. Of course you can adjust the lightness of each color, with PWM, to make this LED turn to other colors such as Yellow. The lens of this dual color LED is 3mm in diameter. 5pcs per pack.           ...

3mm LED Dual Color - Red/Green Common Cathode(5Pcs)
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Price: $1.66
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Elecrow Item #: EL-CLB30003B -

    This red and green dual color led have 3 pins - Cathode is the longest pin, and the other 2 pins for each color. This LED can be used as two status indicators. Of course you can also adjust the lightness of each color, with PWM, to make this LED other color such Yellow.  The lens of this dual color LED is 3mm in diameter. 5pcs per pack.           ...

3mm Pipe for Pump
Price: $1.99
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Elecrow Item #: EL-AMS04010A -

This pipe is for the water pump or air pump, use this pipe to make your water system for you fish tank or automatic watering for your plants? Specification Length: 1m; Outside Diameter: 6mm; Inside Diameter: 3mm; Thickness: 1mm ...

3mm Super Bright LED - Green(10Pcs)
Price: $0.93
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Elecrow Item #: EL-CLS30002G -

Description These are very bright LEDs, the lens of this super bright green LED is 3mm in diameter. 10pcs per pack. Specification Diameter : 3mm Voltage : 2.5-3.2VCurrent : 5mA - 7.5mA      ...

3Pin Dual-Female Jumper Wire - 200mm (5pcs pack)
Price: $2.38
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Elecrow Item #: EL-PCW20031 -

    This is 200mm long 3pin female to female jumper wire which uses high quality 26# line. Great for jumping from board to board. These are simple jumper wires used on standard 2.54mm(0.1") breakaway headers. The pack include 5pcs of this cable.

3W Infrared lamp for Raspberry Pi Camera
Price: $21.32
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Elecrow Item #: EL-RPA22070P -

This is a designed wide angle photographic infrared light for the Raspberry Pi camera use, through which you can capture images, photographs and video during the night to complete the purpose in poor lighting situations with the camera. It is very cheap and powerful performance. Precautions: Raspberry Pi power is limited, when the external 3W high-power light sensitive work, there will be varying degrees of fever phenomenon (you could add a external heat sink). Objects within three meters...

3W mini audio stereo amplifier
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Price: $10.17
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DFRobot Item #: DFR0119 -

This is a mini stereo amplifier. It is a fully functional, two-channel audio amplifier, with an integrated sleep mode function. You can disable it on your sketch if you are not using it or not needed by connecting the sleep pin on your board. It&;lsquo;s specially good for some DIY project.|Specification| Power Supply: DC 3.6-5.5V (DO NOT apply over 5.5V, it damage the chip presently) Output power: 3w+3w (4 ohms) Efficiency: &;gt;90% Size: 15.5*24mm (0.6*0.94&;#39;&;#39;)|Documents| Wiki Doc...

4 Channel Relay Shield for Arduino
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Price: $24.12
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DFRobot Item #: DFR0144 -

This Relay Shield for Arduino acts like a switch. It is commonly used to control anything over 5V such as lamps, water pumps and garage doors. One of the most interesting projects for your boards is perhaps being able to control High power devices like Lamps, water pumps, garage doors and so on. But interfacing with high power and AC is quite a dangerous task when building the circuitry. Relays allow for interfacing an external electrical circuit like a switch. With relays you can now connect...

4 Channels IR Reflective Sensor
Price: $11.59
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Elecrow Item #: EL-SPS40201S -

Description This 4 channels IR reflective sensor includes 4 IR sensors and mainboard to handle all the signals. Each IR reflective sensor is composed of an IR emitter and a receiver, if something is in the measuring range, the sensor would outputs related signal. There are also 4 potentiometers on the mainboard so that the measuring range can be adjusted as you wish. Application Idea Smart car; Line and edge following; omni-directional detecting; On-board indicator; Specification Supply...

4 Pin Crowtail Cable(5 PCS)
Price: $2.98
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Elecrow Item #: EL-CPC03044C -

A 4 pin Crowtail cable for connecting the modules with main control board. Sell at a low price with good quality. If you want to choose 3 pin cable please click here 3 Pin Crowtail Cable Specification Length?20.5cm Package list 4 Pin Crowtail Cable x 5 Wiki & External links ...

4-Channel Relay Module-10A
Price: $9.93
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Elecrow Item #: EL-ARE00104SL -

    A Relay is a digital switch to control much higher voltages and currents than your normal Arduino boards does. When inputs a logic voltage, the relay will switch to allow current to flow or cutoff, depending on your wiring. A Relay usually consists of a coil, 1 common terminal, 1 normally closed terminal and one normally open terminal. When the coil is energized, the common terminal and the normally open terminal will have continuity.          Why do...

4-Soldering Light Chaser Beam Robot Kit
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Price: $25.69
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DFRobot Item #: TOY0060 -

Meet Mr. NEON, the light chaser beam robot that can help kids or novice electronic enthusiasts learn about things like soldering and simple knowledge of circuit. Mr NEON is designed to look like a three-leg monster whose eyes or tentacles glow in accordance with ambient light level. The stronger the light is, the faster it moves. There is no programming involved and all soldering is intuitive and rookie-friendly. So it is perfect for novice electronic enthusiast. Also you can give Mr NEON...

4-Soldering Zoo Animal Kit
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Price: $29.22
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DFRobot Item #: TOY0055 -

This DIY soldering kit contains everything you need to create simple circuits with minimum level electronics and soldering. Kids will be introduced to basics of circuit, soldering and take the opportunity to play with LEDs, battery and bring these animals to life!It&;#39;s simple and fun, grab one panda from this kit of six zoo animals and solder a LED and battery box on the back, it then starts blinking immediately. You can place them in your paper zoo or pin them anywhere you like. You can...

4.3 Inch E-Paper 800x600
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Price: $99.97
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DFRobot Item #: DFR0369 -

This is a 4.3-inch e-ink display module, supports a maximum resolution of 800x600, using serial communication, built-in Chinese and English fonts. It also supports low power consumption mode. If you don't want to know the complex working theory of E-ink screen, or the algorithms of graphics, text, and pictures, it will be your best choice. You only need a serial port to implement all features, let it go! Unleash your creative potential.4.3 Inch E-Paper Project4.3 Inch E-Paper Project 1:...

40  Pin Break Away Male Header- Long Straight-10 Pcs
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Price: $8.71
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DFRobot Item #: FIT0105 -

These are a longer version of our standard break away headers. They are 10mm long which allows you use them socket to socket. The plastic separator can be slid up or down to accommodate your needs. 40 pins that can be cut to any size. Used with custom PCBs or general custom headers. It is used on Arduino Ethernet Shield.|ShippingList| 40 Pin Header x10

40  Pin Break Away Male Header- Right Angle-10 Pcs
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Price: $5.00
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DFRobot Item #: FIT0100 -

A row of right angle headers - break to fit. 40 pins that can be cut to any size. Used with custom PCBs or general custom headers.|ShippingList| 40 Pin Header x10

40 Pin Dual Female Splittable Jumper Wire - 200mm
Price: $5.56
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Elecrow Item #: EL-PCW02040A -

    This is a splittable 40 pin 20mm length dual female jumper wire for 2.54mm, it is very flexible, can be used at bread board or other places need connection. it is able to transformed from 1-20 pin jumper wire.   

40 Pin Dual Female Splittable Jumper Wire - 300mm
Price: $6.49
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Elecrow Item #: EL-PCW03040A -

    This is a splittable 40 pin 30mm length dual female jumper wire for 2.54mm, it is very flexible, can be used at bread board or other places that need connection. it is able to transform to  1-40 pin jumper wire. 

40 Pin Dual Male Splittable Jumper Wire - 200mm
Price: $6.49
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Elecrow Item #: EL-PCW40220P -

Description This is a splittable 40 pin 20mm length dual male jumper wire for 2.54mm, it is very flexible, can be using at bread board or other place need connection. it is able to transformed from 1-40 pin jumper wire. There also have 20 pin wire which have same specification in here.   ...

40 pin dual male splittable jumper wire - 300mm
Price: $7.42
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Elecrow Item #: EL-PCW40302P -

    This is a splittable 40 pin 30mm length dual male jumper wire for 2.54mm, it is very flexible, can be used at bread board or other places that need connection. it is able to transform to 1-40 pin jumper wire.

40 Pin Male - Female Splittable Jumper Wire - 200mm
Price: $6.49
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Elecrow Item #: EL-PCW02040P -

Description This is a splittable 40 pin 20mm length male - female jumper wire for 2.54mm, it is very flexible, can be using at bread board or other place need connection. it is able to transformed from 1-40 pin jumper wire. There also have 40pin wire which have same specification in here.   ...

400 Tie Point Interlocking Solderless Breadboard
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Price: $5.00
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DFRobot Item #: FIT0096 -

The 400 Tie Point Interlocking Solderless Breadboard is a cute half size breadboard, good for small projects. It is 8.2cm x 6.2cm in size with a standard double-strip in the middle and two power rails on both sides. You can pull the power rails off easily to make the breadboard as thin as 3.5cm and stick it onto an Arduino protoshield. You can also cut these in half with a saw to create 2 tiny breadboards, or "snap" these breadboards together either way to make longer or wider...

400 TIE POINT INTERLOCKING SOLDERLESS BREADBOARD - Crystal
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Price: $5.95
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DFRobot Item #: FIT0096-C -

The 400 Tie Point Interlocking Solderless Breadboard is a cute half size breadboard, good for small projects. It is 8.2cm(3.23") x 6.2cm(2.44") in size with a standard double-strip in the middle and two power rails on both sides. You can pull the power rails off easily to make the breadboard as thin as 3.5cm and stick it onto an Arduino protoshield. You can also cut these in half with a saw to create 2 tiny breadboards, or "snap" these breadboards together either way to make longer or wider...

40Pin Bend Male Header - 2.54mm (5 Pcs Pack)
Price: $3.48
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Elecrow Item #: EL-CCO24001C -

    This is a pack which includes 5pcs 40pin bend break away male headers. They have 2.54mm spacing between pins and can be cut to any size. Specification Pin Pitch: 2.54mm Contact Qty: 40 Contact Length: 6.3cm Contact Type: Bend ...

433MHz RF Transceiver CC1101 Module
Price: $17.68
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Elecrow Item #: EL-WRF11010R -

    The CC1101 is a low-cost sub- 1 GHz transceiver designed for very low-power wireless applications. The circuit is mainly intended for the ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands at 315, 433, 868, and 915 MHz, but can easily be programmed for operation at otherfrequencies in the 300-348 MHz, 387-464 MHz and 779-928 MHz bands. Features input voltage :3.3V maximum operating speed: 500kbps, support 2-FSK, GFSK and MSK...

433Mhz Serial RF Module HC-12 (1000M)
Price: $16.22
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Elecrow Item #: EL-WHC0012RF -

    HC-12 wireless serial port communication module is a new-generation multichannel embedded wireless data transmission module. Its wireless working frequency band is 433.4-473.0MHz, multiple channels can be set, with the stepping of 400 KHz, and there are totally 100 channels. The maximum transmitting power of module is 100mW (20dBm), the receiving sensitivity is -117dBm at baud rate of 5,000bps in the air, and the communication distance is 1,000m in open space....

45W DC-DC Converter 9V@5A
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Price: $32.75
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DFRobot Item #: FIT0169 -

This is a waterproof DC-DC converter. With 16-36V DC input, it converts to 9V@5A which is a good supply for robots. |Features| Overvoltage protection Overcurrent protection Overheat protection Short-circuit protection Waterproof and shockproof case High efficiency and less heat|Specification| Input Rage: 16-36V DC Output: 9V DC Output Current: 5A Size: 58 X 40.5 X 22mm(2.28x1.59x0.87") Efficiency: 96% Weight:0.09Kg Maximum working temperature:80 ? |ShippingList| 45W DC-DC Converter(FIT0169) x1 ...

48mm Square 8*8 LED Matrix - Super Bright RGB
Price: $16.22
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Elecrow Item #: EL-MAT04808A -

    This is an awesome large sized RGB LED Matrix with superbright and beautiful performance.It has 64 5mm circle-dot and it's perfectly compatible with our Rainbow shield V1.0. For more details, please refer to the datasheet. Specification Dot Size: 5.0mmPixel Array: 8?8Dimension: 48mm?48mmReverse Voltage(Max): 5V Forward Current(Max) : 20mAPeak Forward Current(Max): 60mAPower Dissipation(any seg): 40mWOperating Temperature(Max): -10~+80??/li>Storage Temperature(Max):...

4MM Inductive Metal Proximity Sensor
Price: $12.35
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Elecrow Item #: EL-SPM0409IP -

        Metal Proximity Sensor, which is also called non-contact proximity switch, it is composed of generator and shaping amplifier oscillator vibration in the switch after induction head, and produces an alternating magnetic field when the metal body detected.         This Inductive Proximity Sensor has high sensitivity, fast frequency response, high repeat positioning accuracy and also stability and reliable, it can detects metal components in 0~4mm...

4WD Mini Robot Mobile Platform Kit FT-MC-003-KIT
Price: $30.88
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Elecrow Item #: EL-RPM14750P -

Mini Robot Mobile Platform used 4 DC motor gear box to drive. The spec the same as FS90R - - High speed up to 100RPM, 1.3kg.cm at 800mA. Four plastic wheels are press-fit onto DC motor gear box output gear shaft, and easy to make a nice drive solution for small robots.The wheels have silicone tires and the diameter is 60mm (2.36?) . This Mini Robot Mobile Platform frame make with 5051 aluminum alloy and anodize color (The factory default is orange. Can do other color if need. ). Mini Robot...

4WD MiniQ Arduino Robot V2.0
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Price: $168.51
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DFRobot Item #: ROB0050 -

Our newly upgraded 4WD MiniQ mobile robot kit is especially designed for education/learning purposes. It comes fully assembled and all your need is a PC with Arduino IDE and 4xAA battery. This new version of MiniQ 4WD Arduino Robot Kit comes with Arduino Leonardo controller (ATmega32u4) and also integrates modules such as RGB LED, photosensitive diode, infrared transmitters, infrared receivers, infrared line tracking sensors, light sensors, additional buttons and buzzer.Along with this mobile...

4xAA battery holder (square with cover)
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Price: $2.24
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DFRobot Item #: FIT0080 -

Simple 4 Cell AA Battery holder with 5" tinned leads, square configuration. This holder features a sliding, removable cover as well as an ON/OFF switch which can be used to control power to your project.|Specification| Battery Quantity: 4 Battery type: AA With Cover With On/Off switch|ShippingList| 4 Cell AA Battery holder x1

5 - 8 mm Coupler
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Price: $10.17
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DFRobot Item #: FIT0248 -

This is a 5mm (0.2") to 8mm (0.31") Aluminum coupler. A common application for this coupler is to connect a stepper motor with a 5mm (0.2") axis to a larger 8mm (0.31") rod. In 3D printers it is commonly used to opperate a threaded rod.This coupler is cut like a spring, giving it a flexible and spring property.?|Specification| outer diameter: 20mm (0.79") Lenght: 25mm (0.98") Fastening screws: 2 (1 for each side) Material: Aluminum|ShippingList| 5 - 8 mm (0.2x0.31") Coupling x1 ...

5-way Tactile Switch
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Price: $2.24
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Sparkfun Item #: COM-10063 -

"Sometimes you want a small input and a single button just won’t cut it. A 5-way tactile switch allows for a joystick-like interface in a very small package. These are surface mount, but easily soldered. Documents: Datasheet "

50 Channel D2523T Helical GPS Receiver
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Price: $110.63
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Sparkfun Item #: GPS-09566 -

50 Channel D2523T Helical GPS Receiver Description: The D2523T is a compact GPS smart-antenna engine board, which comes equipped with a Sarantel GeoHelix high-gain active antenna and GPS receiver circuits. The module is based around the high performance 50-channel u-blox 5 platform. The omni-directional antenna provides great sensitivity, even when you don't have a clear view of the sky. Whether this receiver is in your pocket or under your car seat, you are likely to pickup a rock...

50gm Polymorph Moldable Plastic
Price: $5.75
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MK-Misc Item #: polymorph -

50gm Polymorph Moldable Plastic Polymorph is a plastic that melts at around 60 degrees Celsius and becomes mouldable and easily shaped. All you need to do is pop some of the granules into hot water or heat them with a hair dryer and once they reach 60 degree you can shape them easily with your hands or put it into a mould ready to make complex shapes. If you make a mistake just put it back into the water and start again. This stuff really changed the way we tinkered and has been a life saver...

50pcs DC12V 12mm WS2811 Pixel Node Smart LED
Price: $41.38
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Elecrow Item #: EL-DLD10012W -

look at these colorful LEDs, what a beautiful visual experience! Let?s think about what can make by using it. Signs or advertising screen ? May be more wide range of applications! Let your imagination fly and create more wonderful things. The led adopts perfect optical design, big view angle, waterproof, high brightness and light transmittance, energy saving and environmental friendly. It can be cut each one, easy to operate and repair. Features Adpots high quality  round hat RGB LED as...

5110 Mini LCD 84*48 PCD8544 Shield For Raspberry Pi Model B+/B
Price: $23.33
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Elecrow Item #: EL-RPA51101R -

This product is compatible with Raspberry Pi Model B+ and B. With a resolution of 84 X 48, this Mini LCD screen displays the CPU utilization and the memory occupancy rate that runs on your Raspberry Pi through Raspberry Pi internal Python programming. It is clear at a glance. Geek players can also program by themselves to display any content. When the Raspberry Pi is used as a server, you can also see the operating condition of Raspberry Pi at night. Package list 5110 Mini LCD 84*48 PCD8544...

555 Timer
Price: $1.28
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Sparkfun Item #: COM-09273 -

"This is a common 555 timer/oscillator from TI. A classic for all of those first year circuits projects where you need to blink an LED, generate tone, and thousands of other great beginning projects. Google around for a huge list of resources and example projects. Features: 4.5V to 16V supply 8-pin DIP package Timing from microseconds to hours Astable or monostable operation Adjustable duty cycle TTL compatible output Sink or source up to 200mA Documents:Datasheet" ...

5A 75W DC-DC Module
Price: $11.19
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Elecrow Item #: EL-PC0575DC -

    This module integrated a volage meter with the DC-DC converter ? XL4015, with this module, you can monitor your project much more easier. The voltage meter can measure the input voltage or output voltage, which is adjustable by the protentiometer, with a precision of ?0.1V.Note that the voltage meter would not work if the input voltage below 4V. Press the button (right) to switch voltage to measure, between the input voltage and output voltage. There are 2 LEDs to...

5mm Aluminum Timing Pulley For 3D Printer (2 pcs)
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Retail: $25.50
Price: $17.07
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DFRobot Item #: FIT0247 -

This is an 20 tooth timing pulley with a center diameter of 5mm (0.2"), this is a good fit for mounting on common stepper motors. These pullies are great for many mechanical projects. They are also commonly used in 3D printers. |Specification| Teeth: 20 Inner diameter: 5mm(0.2") Teeth diameter: 12.5mm (0.49") Teeth Width: 6.8mm (0.27") Outer diameter: 15 mm (0.59") Fastening screws: M3 x2|ShippingList| 5mm Aluminum Timing Pulley For 3D Printer x2 M4 embedded screw x4? ...

5mm Flashing RGB LED - Fast(5Pcs)
Price: $1.32
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Elecrow Item #: EL-CLB50004F -

   When it was connected to 3v power supply, it will blink with random 7 colors at high frequence. 5pcs per pack.           ...

5mm Flashing RGB LED - Slow(5Pcs)
Price: $3.31
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Elecrow Item #: EL-CLB50004S -

    When it is connect to 3v power supply, it will blink with random 7 colors at low frequence. 5pcs per pack.           ...

5mm LED Pack (50 pcs)
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Price: $5.86
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DFRobot Item #: FIT0242 -

This package includes 50 5mm LEDs, 5 different colors.It covers five common colors: green, red, yellow, blue & white. It is ideal for your Arduino phototype projects.Get this package of all most common color LEDsfor your next project. Very handy for experiments and home cooked circuit board. |Applications| Prototyping,LED decoration ,Indicator light|Specification| Voltage:1.8-2.2V(Basic Red,Green,Yellow) Voltage:2.4-2.7V(White,Blue) Max current: 20mA Suggested using current: 16-18mA The...

5mm Rubber Wheel Coupling Kit (Pair)
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Price: $16.89
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DFRobot Item #: FIT0387 -

This is a 5mm Rubber Wheel Coupling Kit (Pair) for our Rubber Wheel 136&;times;24mm(5.35x 0.94") Kit which can be used on indoor robots.|ShippingList| Washer x2 Shaft Couplings x2 M8 Screw x2