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  • Pre-Installed SD Card for Raspberry Pi 8GB with Scratch GPIO (SD8GPIO)
    A great way to get started with 4tronix Raspberry Pi add on boards and robotics

    A fast Class 10 8GB micro-SD card with standard SD adaptor so the card will fit in any model of Raspberry Pi from the very first release to the latest 3B and A+ models

    Card Contents are regularly updated and will contain the latest version (unless it is a very recent change) of the following:
    • Raspbian Jessie
    • ScratchGPIO
    • TightVNC server auto-starts so you can connect remotely (password is "4tronix")
    • Examples and libraries in Python for various 4tronix products
    • Examples in ScratchGPIO for various 4tronix products

    Add to Cart
    £6.00
  • 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
  • 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
    £2.95
  • 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
    £1.50
  • 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
    £1.50
  • 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
    £1.00
  • 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
    £1.00
  • LM35DZ Analog Temperature Sensor (ARDLM35)
    ·  Sensing Accuracy Range: ± 0.4°C
    ·  Sensing Temperature Max: +100°C
    ·  Sensing Temperature Min: +2°C
    ·  Sensor Case Style: TO-92
    ·  Supply Current: 91.5µA
    ·  Supply Voltage Max: 30V
    ·  Supply Voltage Min: 4V
    ·  Operating Temperature Min: 0°C
    ·  Operating Temperature Max: 100°C
    ·  Operating Temperature Range: 0°C to +100°C
    ·  Output Voltage per °C: 10mV/°C
    ·  Sensor / Transducer Type: Temperature
    ·  Supply Voltage Range: 4V to 30V
    ·  Temperature Sensing Range: +2°C to +100°C
    Add to Cart
    £1.00
  • Pack of 5 mini-LDR Sensors ()
    Pack of 5 mini LDR
    • Light Dependent Resistors
    • Light resistance down to 30K
    • Dark resistance up to 5M
    Add to Cart
    £1.00
  • 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
  • 6V Geared Motor, 1:48, 240RPM Single Shaft (GRMTR48-240)
    6V DC Geared Motor

    As used in many simple 2WD robots
    • 48:1
    • Single shaft
    • Nominally 6V operation
    • Approx 240rpm at 6V
    Add to Cart
    £2.50
  • 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
    £1.00
  • Energizer AA 2300 mAh NiMH Extreme Rechargeable Battery, Pre Charged (BATAA23)

    These are ready to use when you receive them and are our recommended battery for robotics products.

    Shipped loose - but purchase a multiple of 4 and they will be in a sealed pack of 4.

    Energizer’s range now includes EXTREME pre-charged, ready to use rechargeable batteries. Extreme is the reusable, high performance solution for all occasions and power-demanding devices, which means you save money and reduce waste by replacing less batteries.

    Pre-charged batteries can be used straight from the pack and can hold charge up to a year when not in use, thus providing the convenience of alkaline batteries with the economic and environmental benefits of rechargeable batteries.

    Lasting up to 6 x longer than alkaline batteries (e.g Energizer Ultra), with hundreds of recharge cycles giving a massive cost saving over standard batteries. 95% Recycled Packaging. These high powered 2300 mAh batteries are perfect for high drain digital applications and can be used anywhere standard AA batteries are used.

    Add to Cart
    £1.95
  • 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
    £19.95
  • MMA7361 Triple 3-Axis Accelerometer Gyroscope (MMA7361)
    • Two selectable measuring ranges (±1.5g, ±6g)
    • Breadboard friendly - 0.1" pitch header
    • Low current consumption: 400 µA
    • Sleep mode: 3 µA
    • Low voltage operation: 2.2 V - 3.6 V
    • High sensitivity (800 mV/g at 1.5g)
    • Fast turn on time (0.5 ms enable response time)
    • Self test for freefall detect diagnosis
    • 0g-Detect for freefall protection
    • Signal conditioning with low pass filter
    • Robust design, high shocks survivability
    Add to Cart
    £3.30
  • 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
    £0.00
  • Precision Straight Fine Tip Tweezers (TLTW02)
    A professional quality set of tweezers. Ideal for fine work such as surface mount components

    When soldering small surface-mount (SMD/SMT) components, one thing you'll need is a good pair of tweezers.

    These are a great pair of every-day tweezers. They're anti-static, anti-magnetic and made of hard stainless steel. The tips are fine and pointy to pick up any size component.

    This particular model is 120mm long with a 9mm / 0.35" gap at the tips while open, this allows it to pick up components with better precision for placement and steadying during soldering
    Add to Cart
    £3.95
  • Precision Curved Fine Tip Tweezers (TLTW01)
    A professional quality set of tweezers. Ideal for fine work such as surface mount components

    When soldering small surface-mount (SMD/SMT) components, one thing you'll need is a good pair of tweezers.

    These are a great pair of every-day tweezers. They're anti-static, anti-magnetic and made of hard stainless steel. The tips are fine and pointy to pick up any size component.

    This particular model is 120mm long with a 9mm / 0.35" gap at the tips while open, this allows it to pick up components with better precision for placement and steadying during soldering
    Add to Cart
    £3.95
  • 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
  • Stickvise PCB Vise (PCB Vice) (STVISE)

    Are you still looking for that perfect PCB holder? The low profile PCB Stickvise might be just the thing you need!

    In performing the simple task of holding a PCB near table level, the Stickvise is great because your hands can rest directly on the table, allowing you to steady yourself with minimal effort for fine soldering and probing. The Stickvise also fits easily under a microscope and keeps PCBs consistently in focus.

    Set the width slightly smaller than the size of your work-piece, compress the spring, slide your PCB into place, and release the springs. Easy, fast, and repeatable.

    While the design is simple, it doesn't limit you and is totally hackable. The nylon jaws that come with the vise hold a PCB 5mm or so from the shaft, giving you clearance for most layouts. If you need something a little taller, there are 3D printable designs on the site for taller jaws, jaws with slots to keep cables out of the way, and even High Temperature PTFE Jaws.

    Features

    • Hold your PCB flat -- give your arms a rest! Stickvise is not up in the air, it holds your circuit board flat so you can solder with stability at table level.
    • Simple design -- No half baked features or gimmicks, Stickvise just holds a circuit board in a simple, intuitive way.
    • Hackable -- have a special application? 3D print custom jaw plates or choose from many more tested mods to make Stickvise work for your application.
    • Comes with one set of standard nylon jaws.
    Add to Cart
    £26.95
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