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  • Short 15cm Crocodile Alligator Test Leads. Ideal for Crumble - Pack of 12 (CROC12)
    Set of 12 Short Crocodile/Alligator Test Clips
    • 2 of each colour (Black, Red, Green, Yellow, White, Blue)
    • 15cm long
    • Ideal for use with Crumble
    Add to Cart
  • 2 x AAA Battery Holder with Switch and 2-Pin JST for MicroBit (BBOXMBIT)
    Battery Holder for Use with BBC Micro:Bit

    This enclosed holder for 2 x AAA batteries comes with an on/off switch and 2-pin JST connector for plugging directly into the Micro:Bit. Ideal for simple use of Micro:Bit on the move
    Add to Cart
  • Edge Connector for BBC Micro:Bit (Microbit) (HDRMBIT)

    Edge Connector for BBC Micro:Bit

    The standard through-hole edge connector for use with the BBC Micro:Bit.
    The edge connector has 40 pins on either side at 1.27mm pitch, which translates to the 20 "actual" pins on the Micro:Bit

    This is the same connector used in our Bit:Bot, Robo:Bit and Bit:2:Pi products

    View PDF Datasheet here
    Add to Cart
  • 2 x AAA Battery Holder with 2-Pin JST for MicroBit (BBOXMBITA)
    Open Battery Holder for Use with BBC Micro:Bit

    This open holder for 2 x AAA batteries comes with a 2-pin JST connector for plugging directly into the Micro:Bit. Ideal for simple use of Micro:Bit on the move.
    We also have a battery holder with on/off switch
    Add to Cart
  • 12mm Flat/Square 5V Digital RGB LED Pixels Strand of 50 WS2801 Waterproof IP65 (LED50-2801-5A)

    12mm Flat/Square 5V Digital RGB LED Pixel String - Waterproof IP65

    NB. Photos show shorter strand, but this strand has 50 LEDs

    RGB Pixels are digitally-controllable lights you can set to any color, or animate. Each RGB LED and controller chip is molded into a 'dot' of silicone. The dots are weatherproof and rugged. There are four flanges molded in so that you can 'push' them into a 12mm drill hole in any material up to 1.5mm/0.06" thick. They're typically used to make outdoor signs. These pixels are round, but we also have some with a flat square back. It affects mostly the way the wires lie and the colour of the wires!

    The pixels are connected by a 4-conductor cable. +5V (Red), Ground (Yellow), Data (Green) and Clock (Blue). Data is shifted down from one pixel to the next so that you can easily cut the strand or attach more onto the end.

    Each dot is digitally controlled, with an internal 8-bit PWM LED driver (24-bit color for 16 million different shades). The pixels must be clocked by a microcontroller, we have an example code linked below that works on an Arduino, it should be simple to adapt it to any other microcontroller.

    The pixels use 8mm diffused RGB LEDs, with a 120 degree beam width. The total max brightness of all LEDs is about 1600mcd but with the light more evenly distributed & mixed than a clear LED. (Please note: mcd ratings of LEDs are notoriously inflated by most LED sellers, so be extra-skeptical when reviewing LED ratings!)

    Sold by the strand, each strand has 50 pixels in series! Each strand has two JST SM 4-pin connectors so you can connect multiple strands in a row, as many as you wish, just watch for how much current they want. We now have LED pixel strands with the power wires (Red & White) spliced out so its really easy to connect 5VDC.

    You can drive these with an Arduino using any two microcontroller digital pins, check this library which also has example code to demonstrate the strands and be sure to read Adafruit's detailed tutorial on usage!

    You can also download the FastSPI library and our Chaser.ino sketch. Connect the Data wire (Blue) to Pin 11 and Clock (Green) to Pin 13 as well as Power and Ground

    • 12mm diameter (0.45") 75mm deep (1.5")
    • 80mm / 3" apart between each pixel
    • 50 pieces per string
    • These pixels use a WS2801 chip for full 24 bit color
    • 5V power, 60mA maximum per pixel (LED on full white)
    • Maximum current required 3A per string
    • 2-pin SPI-like protocol
    • Brightness: Red = 3.3 Lumens/300 mcd, Green = 10 Lumens/1000 mcd, Blue = 2.7 Lumens/300 mcd (mcd calculation based on full 120 degree beam)
    Add to Cart
  • Adafruit NeoPixel Ring - 16 x WS2812 5050 RGB LED with Integrated Drivers (ADA-NRING16)

    Adafruit NeoPixel Ring - 16 x WS2812 5050 RGB LEDs (Model #1463)

    Round and round and round they go! 16 ultra bright smart LED NeoPixels are arranged in a circle with 1.75" (44.5mm) outer diameter. The rings are 'chainable' - connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the colour will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC (4-7V works) and you're ready to rock.

    There is a single data line with a very timing-specific protocol. Since the protocol is very sensitive to timing, it requires a real-time microconroller such as an AVR, Arduino, PIC, mbed, etc. It cannot be used with a Linux-based microcomputer or interpreted microcontroller such as the netduino or Basic Stamp. Adafruit's wonderfully-written Neopixel library for Arduino supports these pixels! As it requires hand-tuned assembly it is only for AVR cores but others may have ported this chip driver code so please google around. An 8MHz or faster processor is required.

    Comes as a single ring with 16 individually addressable RGB LEDs assembled and tested.
    Add to Cart
  • Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface - PCA9685 (#815)
    You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that your microcontroller has a limited number of PWM outputs! What now? You could give up OR you could just get this handy PWM and Servo driver breakout.

    When we saw this chip, we quickly realized what an excellent add-on this would be. Using only two pins, control 16 free-running PWM outputs! You can even chain up 62 breakouts to control up to 992 PWM outputs (which we would really like to see since it would be glorious)
    • It's an i2c-controlled PWM driver with a built in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
    • It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)
    • 6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs - that's a lot of servos or LEDs
    • Adjustable frequency PWM up to about 1.6 KHz
    • 12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate
    • Configurable push-pull or open-drain output
    • Output enable pin to quickly disable all the outputs
    We wrapped up this lovely chip into a breakout board with a couple nice extras
    • Terminal block for power input (or you can use the 0.1" breakouts on the side)
    • Reverse polarity protection on the terminal block input
    • Green power-good LED
    • 3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header
    • "Chain-able" design
    • A spot to place a big capacitor on the V+ line (in case you need it)
    • 220 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
    • Solder jumpers for the 6 address select pins
    This product comes with a fully tested and assembled breakout as well as 4 pieces of 3x4 male straight header (for servo/LED plugs), a 2-pin terminal block (for power) and a piece of 6-pin 0.1" header (to plug into a breadboard). A little light soldering will be required to assemble and customize the board by attaching the desired headers but it is a 15 minute task that even a beginner can do.
    Add to Cart
  • SMT Edge Connector for BBC Micro:Bit (Microbit) (HDRMBITS)

    Surface Mount Edge Connector for BBC Micro:Bit

    The standard SMT edge connector for use with the BBC Micro:Bit.
    The edge connector has 40 pins on either side at 1.27mm pitch, which translates to the 20 "actual" pins on the Micro:Bit

    This edge connector has posts at either end to locate it correctly into the

    View PDF Datasheet here
    Add to Cart
  • Diffused 5mm Fast Flashing RGB LED - Pack of 2 (LEDFKSHF)
    These are very interesting 5mm diffused RGB LEDs - instead of having 4 pins to control 3 LEDs, they have only two leads - power and ground. When powered, the LEDs perform a flashing effect with all the colours. See the video below for the timing and look. There is no way to change the 'program' or rate as it's burned into a little chip that is inside the LED itself. We also have a version that's a 'slow fading' RGB colour cycle.

    They're fairly bright LEDs, we guess its something around 1000 mcd total. They do diffuse nicely so you can the color changing from any angle. The forward voltage of the whole LED is about 3.4VDC but you can drive them from a lithium coin cell like a CR2032 and they'll just be a little dimmer. We don't have a datasheet showing the current draw over different voltages and colors but at the 'rated' 3.4V its approx 20mA and at 3.0V its approx 10mA.

    Comes in a pack of 2 LEDs. Although the LEDs are all the same shape and have the same basic program, due to manufacturing variables they will not sync together - they'll slowly drift in and out of sync
    Add to Cart
  • Bluetooth LE (BLE) Beetle Wearable Microcontroller - Arduino Compatible (BTLBLE)

    BLE Beetle Microcontroller - Arduino Compatible Minimalist Wireless Wearable Controller

    This new version of the Beetle supports wireless programming as well as communications

    It uses the ATMega328P - the same processor as used in the Arduino Uno


    • ATmega328@16MHz
    • Bluetooth Low Energy (BT 4.0)
    • Micro USB port
    • Super Compact Size
    • Support Bluetooth HID and ibeacon
    • Comaptible with all DFRobot Bluno Series
    • Support Wireless Programming


    • Bluetooth Chip: CC2540
    • Sensitivity: -93dBm
    • Working Temperature:-10 ℃ ~ +85 ℃ 
    • Maximun Distance:50m(Open field)
    • Microcontroller: ATmega328
    • Clock frequency: 16 MHz
    • Working voltage: 5V DC
    • Digital Pin x6
    • Analog Pin x6
    • PWM Output x2
    • UART interface x1
    • I2C interface x1
    • Micro USB interface x1
    • Power port x2
    • Size:28.8mm X 33.1mm
    • Weight:10g
    Add to Cart
  • Long 30cm Crocodile Alligator Test Leads. Ideal for Crumble - Pack of 10 (CROC10)
    Set of 10 Crocodile/Alligator Test Clips
    • 2 of each colour (Black, Red, Green, Yellow, White)
    • 30cm long
    • Ideal for use with Crumble
    Add to Cart
  • 2-Pin Mini Slim Tact Switch - Pack of 4 (TACTSLIM)
    Pack of 4 slim tactile push button switches. Suitable for breadboards or use with the Pi TFT Screen

    Slim clicky momentary switches are standard input "buttons" on electronic projects. These are half the width of classic 6mm tactile switches so they line up better on a breadboard, just plug them into every-other row. These work best in a PCB but can be used on a solderless breadboard as shown in this tutorial. The two pins are normally open (disconnected) and when the button is pressed they are momentarily closed.
    Add to Cart
  • Battery Clip for Arduino & 9V Battery (BATCLIP)
    Ideal for connecting a 9V battery to an Arduino Uno, Leonardo or Mega2560

    11cm end to end
    Add to Cart
  • 2-Pin Mini Tact Switch 6mm square - Pack of 5 (TACT2)
    Pack of 5 mini Tact push button switches.

    These fit well into breadboards as the legs are straight and there is no confusion as to which way round they go as you get with the 4-pin switches.
    • Lead spacing 5.08mm (0.2")
    • Dimensions: 6 x 6mm
    • Push to make
    Add to Cart
  • Pack of 20 LEDs - Choose Colour ()
    A pack of 20, 3mm LEDs in a choice of colours: Red, yellow, Green, Blue, White
    Add to Cart
  • Individual LED RGB 5V Pixels Addressable WS2812B (WS2812B10)

    WS2812B RGB LED 5V Pixels - Packs of 10, 50, 100, 200

    RGB Pixels are digitally-controllable lights you can set to any colour, or animate. Each pixel a 5050 size (5 x5mm square) RGB pixel, with the 24-bit PWM controller chip embedded directly within the pixel.

    Each pixel is digitally controlled, with an internal 8-bit PWM LED driver (24-bit color for 16 million different shades).

    The WS2812B differs from the earlier WS2812 in that it only has 4 pins. The power for the controller and the LED is combined and is also reverse polarity protected. Connect DO (Data Out)  of first chip to DI (Data In) of the next. Several hundred can be connected together in one chain and are all separately addressable. The timing sequence is very specific and the length of refresh increases with every LED added to the string

    You can download the FastSPI library and our Chaser.ino sketch. Connect the DI (Data In) of the first pixel Pin 11 as well as Power and Ground
    Add to Cart
  • 3 x AA Battery Crumb for Crumble (CRBAT)
    Battery Holder Crumb

    This Crumb provides a switched power supply with indicator light and fuse. I has two sets of Crumble compatible output connectors. Ideal for powering your Crumble project.

    Batteries, Croc clips and Crumble NOT included.
    Add to Cart
  • BBC Micro:Bit in Gift Box (Microbit) (MBIT)

    BBC Micro:Bit in Gift Box

    BBC micro:bit is a BBC initiative to get kids in the UK coding. A royalty from the sale of this BBC micro:bit merchandise helps promote digital creativity amongst young people in the UK.

    The BBC micro:bit is a pocket-sized computer that you can code, customise and control to bring your digital ideas, games and apps to life.

    Measuring 4cm by 5cm, and designed to be fun and easy to use, users can create anything from games and animations to scrolling stories at school, at home and on the go - all you need is imagination and creativity.

    Available in 4 striking colours (Red, Blue, Yellow and Green). "You will be sent random colours of BBC micro:bit, you will not be able to order items based on their colour"

    Child Friendly:
    • Detects motion and direction - Shake the BBC micro:bit to play the classic Paper, scissors, stone game. Navigate around your local park with the onboard compass.
    • Control games using the 2 buttons
    • Flash messages or animations across the 25 programmable lights
    • Connect the BBC micro:bit to your phone using Bluetooth wireless technology to take selfies without touching your phone
    • Add a speaker to one of three connecting rings to play sounds or music.

    Micro:bit features:
    • Multiple sensors
    • Programmed via software via USB
    • Multiple platform support Windows, iOS, tablet, mobile
    • Open Source hardware (OSHW)

    Top Side
    • 3 Digital/Analogue input/output rings
    • Power port ring
    • Ground ring
    • 25 individually programmable LEDs
    • 2 programmable buttons

    Bottom Side
    • 23-bit ARM Cortex M0+ CPU
    • Bluetooth Smart Antenna
    • Accelerometer and compass
    • Micro USB
    • 20-pin edge connector
    • Battery connector
    Add to Cart
  • Stereo Jack Connector 3-Pin SMT (5 Pack) (AUCON3)
    3-pin Surface mount connector as used in our Playground system

    Pack of 5 connectors

    Datasheet download here
    Add to Cart
  • Micro-USB Cable (1m) : Micro:Bit, Crumble, Raspberry Pi, etc. (USBMICRO)
    Quality 1m Micro-USB Cable

    Ideal for use with many micro-processors we stock, including
    • Crumble
    • Raspberry Pi
    • Arduino Yun
    Add to Cart
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