Arduino

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  • 20x4 LCD 4-Line Module with Green Backlight (Parallel interface) (ARD20X4GRN)
    ·  Operating voltage: 5V
    ·  Alphanumeric character set
    ·  4 lines of 20 characters
    ·  GREEN backlight
    ·  Module size: 98 x 60 x13mm
    ·  Display size: 75 x 25mm
    ·  Standard 16-pin connection holes
    ·  16-pin Male Header included
    ·  Works directly with the Arduino Example HelloWorld sketch
    Add to Cart
    £4.95
  • 20x4 LCD 4-Line Module with Blue Backlight and I2C Interface (ARD20X4I2C)
    ·  Arduino Libraries and Example Code Available >>HERE<<
    ·  Operating voltage: 5V
    ·  Alphanumeric character set
    ·  4 lines of 20 characters
    ·  Blue Backlight
    ·  Module size: 98 x 60 x12mm
    ·  Display size: 75 x 25mm
    ·  I2C 2-wire connection
    ·  Built-in Contrast Adjustment
    Add to Cart
    £6.40
  • 2-Channel Relay Module Board 5V (RLY2)
    ·  5V 2-Channel Relay interface board
    ·  Optical isolation on each channel
    ·  Drive directly from Arduino etc.
    ·  High power relays for each channel: 250V 10A AC
    ·  Indication LED for each output
    ·  Module size: 49 x 38 x 20mm
    Add to Cart
    £2.50
  • 2- Channel Analog Joystick with Centre Button & Breakout Board ()
    This module allows you to use a 2-channel joystick with your Arduino. It provides 2 independent potentiometer outputs for X and Y as well as a separate on/off switch activated by pressing the joystick
    Add to Cart
    £3.15
  • 16x2 LCD 2-Line Module with Blue Backlight (Parallel interface) (ARD1602)
    ·  Operating voltage: 5V
    ·  Alphanumeric character set
    ·  2 lines of 16 characters
    ·  Blue backlight
    ·  Module size: 80 x 36 x12mm
    ·  Display size: 64.5 x 16mm
    ·  Standard 16-pin connection holes
    ·  16-pin Male Header included
    Add to Cart
    £2.75
  • 12mm Round 5V Digital RGB LED Pixels Strand of 50 WS2801 Waterproof IP65 ()

    12mm Round 5V Digital RGB LED Pixel String - Waterproof IP65

    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 (White), Data (Blue) and Clock (Green). 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
    £22.95
  • Arduino Project Handbook: Volume one: Complete Guide to Creating with the Arduino (BK-ARDPROJ)
    There is no VAT on this book

    This is the must have Arduino Project Handbook with 45 cool projects to create detailed in full colour.

    Every maker and tinkerer should own a copy!

    What is the Arduino Project Handbook?
    It's a full colour reference book for 45 exciting and practical projects for the Arduino Microcontroller. If you are reading this then you probably already have an idea of what the Arduino is. For those that don't, it's an inexpensive small computer that can be programmed to control endless creations limited only by your imagination.

    It's used by artists and makers to bring their creations to life. A lie detector, programmable rocket launcher, motion sensor alarm, reaction timer, electronic dice, keypad entry system, laser trip wire alarm, robot, Wireless ID card system, range finder and defusable bomb game are just some of the cool projects that this book will demonstrate how to build. All are easily achievable and have one thing in common - they use the power of the Arduino.

    NB. No VAT is applied to this book
    Add to Cart
    £9.50
  • GY-80 10 DOF IMU Module With L3G4200D ADXL345 HMC5883L BMP085 (GY-80)
    • Chips included on the board
      • L3G4200D (3-Axis Angular Rate Sensor)
      • ADXL345 (3-Axis Digital Accelerometer)
      • HMC5883L (3-Axis Digital Compass)
      • BMP085 (Barometric Pressure Sensor)
    • Built in regulator and logic converter to support  3.3V/5.0V microcontrollers
    • I2C Digital Interface
    • Module Size: 25.8 x 16.8mm mounting hole 3mm
    • Immersion Gold PCB process
    • Standard 2.54mm pin interface, plug straight into breadboards
    • Both Straight and Right-Angle headers included
    Downloads:
    Add to Cart
    £16.65
  • 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
    £3.45
  • 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
    £3.50
  • 36mm Square 12V Digital RGB LED Pixels Strand of 20 WS2801 Waterproof IP66 ()

    36mm Square 12V Digital RGB LED Pixel String

    RGB Pixels are digitally-controllable lights you can set to any color, or animate. Each metal 'pixel square' contains 4 RGB LEDs and a controller chip soldered to a PCB. The pixel is then 'flooded' with epoxy to make it waterproof. These are fairly large pixels but they have a couple of nice mounting options, such as two metal flanges on the side and a self-adhesive backing layer. They're typically used to make outdoor signs. Compared to our other LED dots, these are much bigger and much brighter, good for larger scale installations.

    They are waterproof and can be used outside.

    The pixels are connected by a 4-conductor cable. +12VDC (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 4 x 5050 RGB LEDs, with a 120 degree beam width. All of the LEDs are controlled at once so you cannot have one pixel with the four LEDs different colors. (Color control is per single square 4-LED pixel only) The total max brightness of all LEDs is about 6000mcd. (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 20 pixels in series! Each strand has two JST SM 3-pin connectors so you can connect multiple strands in a row, as many as you wish, just watch for how much current they want. The two power wires are brought out separately to make wiring easier, a 2.1mm terminal block adapter is handy here to attach a DC power supply. We have a 12V/5A supply that should be able to drive 2 or more strands (depending on current use). The LEDs are constant-current driven so you'll have even colors through-out the strand as long as you have a stable 12V supply

    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 (check colour above) to Pin 11 and Clock to Pin 13 as well as Power and Ground
    Add to Cart
    £26.65
  • Sparkles Baton - A chain of 8 Sparkles for Crumble (SPRKBATON)
    Sparkle Baton
    A row of 8 full-colour LEDs (“Sparkles”), on one PCB, with croc-clip friendly connections at each end.

    The colour of each LED can be set individually by the Crumble and the “power-in” and “power-out” connections at each end mean the batons can be chained together, with up to 4 batons controlled by 1 Crumble
     
    Add to Cart
    £7.00
  • Ultimate Crumble Starter Kit (CRMULT)
    Ultimate Crumble Starter Kit

    The Crumble is a cheap, easy-to-use electronics controller. A few ‘croc’ leads and a USB cable are all you need to connect motors, LEDs and sensors and begin experimenting. No programming experience is required as the FREE software is a graphical, drag-and-drop system inspired by MIT Scratch.

    This Ultimate Starter Kit Comprises:

    Crumble controller is NOT included unless option is selected

    Basic Kit
    • 4tronix Battery Crumb (with switch, fuse and indicator LED
    • 2 x Sparkles (RGB colour pixels)
    • 12 x Crocodile clip leads (2 of each: Black, Red, Yellow, Green, Blue, White)
    • Extra cost option: Crumble controller (the bit that does the magic!) with USB Lead
    • NB. The Crumble is not always included because many customers already have one
    + 5 Blue Digital Input Crumbs
    • Button/Switch Crumb
    • Reed Crumb (Magnetic switch)
    • Capacitive Touch Sensor Crumb
    • Proximity Sensor Crumb
    • PIR (Crumb (passive infrared motion sensor)
    + 4 Yellow Analog Input Crumbs
    • Dial Crumb
    • Slider Crumb
    • Light Sensor Crumb
    • Motion Sensor Crumb
    + 2 Black Digital Output Crumbs
    • Traffic Light Crumb
    • Buzzer Crumb
    + 3 Red "Analog" Output Crumbs
    • Motor Crumbs with wheel
    • Servo Crumb
    • Number Crumb

    See our article on getting started with Crumble and Crumbs

    Download Crumble Software here

    Crumble Getting Started Guide

    The Crumble is an easy-to-use programmable controller. It can drive 2 motors forwards and backwards at variable speeds. It has 4 IO (Input/Output) pads which allow connections to switches, LDRs, low power LEDs and so on.

    Basic Connections

    The Crumble has been designed to encourage tinkering, using ‘croc leads’ for quick and simple connections. Pads allow terminal blocks to be fitted or a direct solder connection made, while the larger 4mm holes make an easy target for conductive thread and needle.

    Crumble with croc leads

    The Crumble software runs on PC, Mac and, in the near future, Linux (including the Raspberry Pi). Inspired by MIT Scratch, programs are simply built by snapping blocks together on screen. Sending a program to the Crumble is almost instant, allowing rapid experimentation.

    The Crumble can be extended with digitally controlled full-colour LED, called Sparkles. Additionally, several expansions board (Crumbs) are also in the works.

    Add to Cart
    £65.95
  • Adafruit NeoPixels v2 - Pack of 4 Flora Smart Neo Pixels 24-Bit RGB LEDs (#1260)

    Adafruit Neo Pixels - Pack of 4, RGB LEDs (Model #1260)


    What's a wearable project without LEDs? Our favorite part of the Flora platform is these tiny smart pixels. Designed specifically for wearables, these updated Flora NeoPixels have ultra-cool technology: these ultra-bright LEDs have a constant-current driver cooked right into the LED package! The pixels are chainable - so you only need 1 pin/wire to control as many LEDs as you like. They're easy to sew, and the chainable design means no crossed threads.

    This is the second version of the Flora NeoPixels, which runs at at 'high speed' 800KHz communication. Unfortunately they are not back-compatible with the chip-on-back 'low speed' (400KHz) Flora NeoPixels. If you have a project that already uses low speed pixels, and you want to attach more pixels to the chain, you will need to purchase version 1's as these are not cross-compatible.

    These pixels have full 24-bit color ability with PWM taken care of by the controller chip. Since the LED is so bright, you need less current/power to get the effects you want. The driver is constant current so its OK if your battery power changes or fluctuates a little.

    Each pixel draws as much as 60mA (all three RGB LEDs on for full brightness white). In theory, the Flora can drive up to 500 pixels at 30 FPS (it will run out of RAM after that). However, after about 10 pixels (or if the distance between pixels is more than an inch or two) the resistance of the thread can affect the power supply. For large quantities of pixels over 10, you may want to consider using stranded core wire or copper braid to provide a "power bus" for the pixels - the current draw will add up fast!

    Each order comes with 4 individually controllable pixels.
    Add to Cart
    £7.00
  • Adafruit Breadboard-Friendly RGB Smart NeoPixel - Pack of 4 with Headers (#1312)

    Adafruit Breadboard-Friendly NeoPixels - Pack of 4 (Model #1312)

    This is the easiest way possible to add small, bright RGB pixels to your project. We took the same technology from our Flora NeoPixels and made them breadboard friendly, with two rows of 3 x 0.1" spaced header on each side for easy soldering, chaining and breadboarding. These ultra-bright LEDs have a constant-current driver cooked right into the LED package! The pixels are chainable - so you only need 1 pin/wire to control as many LEDs as you like.

    These pixels have full 24-bit color ability with PWM taken care of by the controller chip. Since the LED is so bright, you need less current/power to get the effects you want. The driver is constant current so its OK if your battery power changes or fluctuates a little.

    Each pixel draws as much as 60mA (all three RGB LEDs on for full brightness white). An Arduino can drive up to 500 pixels at 30 FPS (it will run out of RAM after that). Using ribbon cable you can string these up to 6" apart (after that, you might get power droops and data corruption)

    Each order comes with 4 individually controllable pixels. In the photos below we show the pixels with headers soldered on. We include a 40-pin male header strip with each pack of 4

    Check out Adafruit's Arduino library at github which has some example code for driving the pixels at 800KHz
    Add to Cart
    £7.00
  • Adafruit NeoPixel Matrix 8x8 - 64 RGB LED Pixel Matrix (ADA-NEOMATRIX)

    Adafruit NeoPixel Matrix - 64 RGB LEDs in 8x8 Matrix (Model #1487)

    Put on your sunglasses before wiring up this LED matrix - 64 eye-blistering RGB LEDs adorn the NeoMatrix from Adafruit for a blast of configurable color. Arranged in an 8x8 matrix, each pixel is individually addressable. Only one microcontroller pin is required to control all the LEDs, and you get 24 bit color for each LED.

    Wiring it up is easy: there are two 3-pin connection ports. Solder wires to the input port and provide 5VDC to the +5V and ground pins, then connect the DIN pin to your microcontroller. If you're using our NeoPixel Arduino library, use digital #6. You'll also need to make a common ground from the 5V power supply to the microcontroller/Arduino. Since each LED can draw as much as 60mA (thats up to 3.5 Amps per panel if all LEDs are on bright white!) we suggest our 5V 2A power supply. For most uses, you'll see about 1-2A of current per panel.

    If, say, you need MORE blinky, you can chain these together. For the second shield, connect the DIN connection to the first panel's DOUT. Also connect a ground pin together and power with 5V. There you go! You can chain as many as you'd like although after 4 or more panels you may run low on RAM if you're using an UNO. Watch your power usage too, you may need a 5V 10A power supply for so many of these!

    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.

    Adafruit's detailed NeoPixel Uberguide has everything you need to use NeoPixels in any shape and size. Including ready-to-go library & example code for the Arduino UNO/Duemilanove/Diecimila, Flora/Micro/Leonardo, Trinket/Gemma, Arduino Due & Arduino Mega/ADK (all versions)
    Add to Cart
    £26.65
  • Adafruit NeoPixel Quarter 60 Ring - 15 x WS2812 5050 RGB LED with Integrated Drivers (ADA-QRING15)

    Adafruit NeoPixel Quarter Ring - 15 x WS2812 5050 RGB LEDs (Model #1768)

    The biggest NeoPixel Ring yet! With four of these you can make a huge ring with 60 ultra bright smart LED NeoPixels are arranged in a circle with a 6.2" diameter. Each order comes with just the quarter ring. Four of this item are required to make a large ring. You will have to solder them together as well, so for the full ring of 60 LEDs, buy four and solder them together!

    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 color 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 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 microcontroller 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 with one quarter ring of 15 x individually addressable RGB LEDs assembled and tested. We recommend you buy four to build the full circle as this is just the 1/4 of the circle.
    Add to Cart
    £6.95
  • Picobot2 - Cool, Smart Robot for Kid-Friendly Learning and Coding (PB2x-xx)

    Picobot2
    Kid-Friendly, Low-Cost, Educational, Feature-Rich, Programmable Robot

    Got a budding geek? There is nothing more exciting than a fully programmable robot to capture the imagination and learn the skills of coding robot building

    Build, Play, Learn

    Within a few minutes of opening the box you will have assembled the Picobot2 and will have it running around performing its built-in actions.
    • Build your own robot with kid friendly, easy steps to assemble the complete robot - 4 screws, push on the wheels and off you go!
    • Play with the built-in example programs to follow lines, seek out light sources, avoid obstacles or stay close to you
    • Learn coding by extending the example programs using the full-featured library

    Included Examples
    • Line following
    • Obstacle avoidance
    • Light seeking
    • Light avoiding
    • Colour reaction to environment Light vs Distance, Colour vs Light received, etc
    • Follow my leader (pulse the rear LED and get second Picobot to follow a pulsing white light)
    • Stay fixed distance from object/person - eg. get it to follow you around

    Base Model Comprises All you Need to get Going
    • Ready assembled circuit board with motors and lots of sensors - pre-programmed with examples
    • Acrylic case - 4 screws to fit it together
    • Rechargeable battery
    • Wheels
    • USB cable for charging and programming

    Technical Specification
    • Arduino UNO compatible ATMega328P-AU
    • 2 x N20 geared motors with "biscuit" 42mm diameter wheels
    • 400mAh rechargeable (Lipo) battery
    • 2 front light sensors
    • 2 line sensors
    • 2 fully independently controllable RGB LEDs underneath for mood lighting and status information depending how you want to program them
    • Integrated smart battery charger with LED status indicators. Charges the battery intelligently and switches off the charging when complete
    • Mode selection button - general purpose input button that you can program yourself
    • On - Off switch
    • Reset button
    • Ultrasonic distance sensor HC-SR04
    • 5V boost regulator to keep the Ultrasonic going right to the end of the battery life

    Available Options - Factory Fit Only:
    • Bluetooth Smart (Bluetooth Low Energy BLE) module using Nordic nRF51822 chipset
    • Wifi module using the ESP8266 chipset
    • Only one module can be fitted as they both use the same physical and electrical connections
    • The Wifi module uses a lot of power and so will significantly reduce the battery life between charges
    • Note that the Bluetooth and WiFi modules are not supported in the Picobot2 library directly and there are no specific Smartphone apps, but examples are available showing how they can be used

    For getting started, assembly, programming and fun ideas, please see 4tronix.co.uk/picobot2



    Add to Cart
    £36.00
  • Crumble Starter Kit: Croc Clips, LEDs. Sparkles. USB Cable (CRMSTART)
    Crumble Controller - Basic Starter Kit

    The Crumble is a cheap, easy-to-use electronics controller. A few ‘croc’ leads and a USB cable are all you need to connect motors, LEDs and sensors and begin experimenting. No programming experience is required as the FREE software is a graphical, drag-and-drop system inspired by MIT Scratch.

    This Basic Starter Kit Comprises:
    • Crumble controller (the bit that does the magic!)
    • 2 x Sparkles (RGB colour pixels)
    • 10 x Crocodile clip leads (2 of each: Black, Red, Yellow, Green, White)
    • 5 x LEDs (Red, Yellow, Green, White, Blue) - connect directly to the A, B, C or D outputs
    • 1 x LDR (light sensor) - use Analog inputs to determine light levels
    • USB Cable
    • Battery Crumb with switch and indicator and Crumble compatible connections (Requires 3xAA batteries - not included)
    View our Crumble quickstart guide here

    Download Crumble Software here

    Download Crumble Getting Started Guide

    The Crumble is an easy-to-use programmable controller. It can drive 2 motors forwards and backwards at variable speeds. It has 4 IO (Input/Output) pads which allow connections to switches, LDRs, low power LEDs and so on.

    Basic Connections

    The Crumble has been designed to encourage tinkering, using ‘croc leads’ for quick and simple connections. Pads allow terminal blocks to be fitted or a direct solder connection made, while the larger 4mm holes make an easy target for conductive thread and needle.

    Crumble with croc leads

    The Crumble software runs on PC, Mac and, in the near future, Linux (including the Raspberry Pi). Inspired by MIT Scratch, programs are simply built by snapping blocks together on screen. Sending a program to the Crumble is almost instant, allowing rapid experimentation.

    The Crumble can be extended with digitally controlled full-colour LED, called Sparkles. Additionally, several expansions board (Crumbs) are also in the works.

    Add to Cart
    £20.00
  • Servo Crumb for Crumble Controller (CRSERVO)
    Servo Crumb for Crumble
    (AnalogOutput Crumb)

    This Crumb is fully compatible with the Crumble Controller and makes it easy to use Croc Clips to move the servo arm from -90 degrees to +90 degrees.

    The Crumble software can directly drive this servo Crumb using the servo commands to move 90 degrees left and right

    A micro servo is ready assembled onto the Crumb, but other servos can be connected instead if required to the 3-pin standard servo header.

    Crumb Colour Coding:
    Yellow: Analog Input
    Red: Analog Output
    Blue: Digital Input
    Black: Digital Output

    See our Crumble QuickStart Guide
    Add to Cart
    £5.50
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