4tronix

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  • Robot Line Follower Vinyl Race Track (RMATx)
    Race Track for Robots with Line Follower Sensors

    These tough vinyl race tracks have a black line that is over-coated with a deep matte black to reduce the natural reflections.

    The track is available in 2 sizes: 4' x 2' and 6' x 3'

    Both sizes of track have the same line width (18mm), but all other features are simply scaled.

    Supplied in a cardboard tube for safe storage.

    Add to Cart
    £22.50
  • Bit:Bot Robot for BBC Micro:Bit (BitBot for MicroBit) (BITBOT)
    Bit:Bot Fully Integrated Robot for the BBC Micro:Bit

    NB. BBC Micro:Bit is NOT included unless specifically selected with the checkbox

    This (almost) ready-assembled robot requires no soldering, no wires and nothing more than a screwdriver to complete it.

    The Bit:Bot fully engages children and adults alike, allowing you to explore and code the BBC Micro:Bit using any of the languages available (not all features are supported in all languages)

    Check out these features:
    • 2 micro-metal gear motors. Both fully controllable in software, for both speed (0 to 100%) and direction (forward or reverse)
    • Wheels with rubber tyres for maximum grip
    • Really smooth metal ball front caster
    • 12 mini neopixels in 2 sets of 6 along the arms either side. Select any colour for any pixel, produce stunning lighting effects as your Bit:Bot moves around
    • 2 digital line following sensors. Code your own line-following robots and race them to see whose code produces the fastest lap time!
    • 2 analog light sensors (front left and front right) so your Bit:Bot can be programmed to follow a light source such as a torch, or you could code it to go and hide in the darkest place it can find
    • Buzzer, so you can make beeping sounds whenever you want
    • Powered from integrated 3xAA battery holder with on/off switch and blue indicator LED
    • Easily plug your BBC micro:bit in and out using the edge connector
    • Extension port for addition neopixels (such as McRoboFace)
    • Expansion connections at the front for additional sensors (Ultrasonic rangefinder available now, more in development)
    Optionally, you can add an Ultrasonic Distance Sensor (rangefinder) module. The sensor can be either soldered to the module, or connected via a socket. No soldering is required for either version. The socketed version makes it easier to connect a micro-USB lead to the Micro:Bit, but the soldered version is more robust.

    See our detailed blog entry for example code snippets and application ideas
    Add to Cart
    £29.75
  • Pi2Go Fully Integrated Robot for Raspberry Pi (PI2GO)
    Pi2Go - The Complete Robot for your Raspberry Pi

    No Soldering required - simply screws together

    Supports All models of Raspberry Pi (except very first release which has no mounting holes): Model A, Model B, Model A+, Model B+, Raspberry Pi 2 Model B and Raspberry Pi 3 Model B

    Have a look at the features:
    • No separate chassis - everything is connected to the  main circuit board
    • 5V switching regulator that can supply a fully loaded Pi as well as all the motors etc. on the Pi2Go
    • 2 DC motors
    • 3 x IR Obstacle sensors with indicator LEDs – detect objects within 10cm (left side, right side and front)
    • 2 x IR line sensors with indicator LEDs - program the Pi2Go to follow lines
    • Ultrasonic distance sensor - measure the distance to objects in front
    • Push button – non-dedicated switch use in you programs to change mode, switch off, or whatever you want
    • 4 pairs of fully controllable RGB LEDS - any colour, any brightness
    • 4 light sensors with analog to digital converter built in
    • 4 servo outputs controlled by onboard hardware
    • Active Power supply monitor: shuts down motors if battery getting low and sends signal to Pi if getting very low
    Software:
    • A python library module is available with some example programs
      • Move motors forwards, backwards, spin left/right or do sweeping turns
      • Read the values from all the IR sensors (On or Off)
      • Read the distance using the ultrasonic sensor
      • Read the value of the switch
      • Set the RGB LEDs to any colours you want
      • Set the position of each servo
    • ScratchGPIO version 7 and later fully supports Pi2Go

    Dimensions:
    • Main PCB 110 x 80mm
    • Wheels 65mm diameter
    • Assembled size approx: 155 x 140 x 90mm (L x W x H)

    Visit the Pi2Go website for assembly details, software downloads and news updates

    Add to Cart
    £49.50
    £55.00
  • GPIO Breakout Intercept for 40-pin Raspberry Pi PCB (10 pack) (BBBBRKT10)
    40-Pin GPIO Breakout for Raspberry Pi - 10 Pack PCB+GPIO Only

    This item is a panel of 10 PCBs with the GPIO connector already soldered on. The additional female and male headers shipped with the single item are not included.

    A great way of accessing those unused GPIO pins even when they're covered by a HAT
    • Suitable for all Raspberry Pi with 40 pin GPIO. Zero, A+, B+, 2B, 3B
    • GPIO header is pre-soldered
    • All pins labelled (Broadcom naming)
    • Solder wires directly to the broken out pins or solder the (included) male header
    • Uses a low-profile header fitted to the breakout PCB and an extended female header (not included) that you simply push through the holes (see photos)
    • Plug your HAT or other addon board into the pins of the extended header
    • Matte black PCB with gold plated contacts
    Contents:
    • PCB with pre-fitted GPIO header (male header and extended female header NOT included_
    • All RoHS compatible and gold-plated
    Part of the Basic Building Blocks range from 4tronix which enables stacking multiple addons. As with all products in the range, the GPIO header is pre-fitted, leaving you to solder the through-hole components.

    NB. Some HATs using low-profile headers may not make as good contact with the header. In that case, you will need to screw the HAT firmly into supporting pillars (not included).
    Add to Cart
    £21.80
  • GPIO Breakout Intercept for 40-pin Raspberry Pi (BBBBRKT)
    40-Pin GPIO Breakout for Raspberry Pi

    A great way of accessing those unused GPIO pins even when they're covered by a HAT
    • Suitable for all Raspberry Pi with 40 pin GPIO. Zero, A+, B+, 2B, 3B
    • GPIO header is pre-soldered
    • All pins labelled (Broadcom naming)
    • Solder wires directly to the broken out pins or solder the (included) male header
    • Uses a low-profile header fitted to the breakout PCB and an extended female header that you simply push through the holes (see photos)
    • Plug your HAT or other addon board into the pins of the extended header
    • Matte black PCB with gold plated contacts
    Contents:
    • PCB with pre-fitted GPIO header
    • Extended female header 2x20, 10.5mm legs (push though)
    • 2x20 male header (solder on if required)
    • All RoHS compatible and gold-plated
    Part of the Basic Building Blocks range from 4tronix which enables stacking multiple addons. As with all products in the range, the GPIO header is pre-fitted, leaving you to solder the through-hole components.

    NB. Some HATs using low-profile headers may not make as good contact with the header. In that case, you will need to screw the HAT firmly into supporting pillars (not included).
    Add to Cart
    £3.75
  • 4tronix RoboHAT Robot Controller for Raspberry Pi (ROBOHAT)

    RoboHAT - Complete Robotics Controller for Raspberry Pi


    Supports all models of Raspberry Pi with 40 pin Connector: Model A+/B+ as well as Pi 2 and 3 Model B

    Programming is fully supported in both Python and Scratch GPIO

    This is the replacement for the Pirocon

     

    RoboHAT is a complete robotics controller for your Raspberry Pi based mobile robot. Just look at the features provided in this small board:

    1. Fully HAT specification compliant
    2. 5V switching regulator to safely power the robot and the Pi from 7V to 10V batteries
    3. LED indication of 5V power status
    4. High efficiency, dual H-Bridge driver to drive 2 DC motors (or 2 sets of 2 if using paired motors on each side of the robot)
    5. 6, 5V level shifted GPIO inputs with GVS 3-pin connectors (Ground, Volts, Signal)
    6. 4, 5V level shifted GPIO outputs with GVS 3-pin connectors
    7. 4-pin male header to directly plug in an Ultrasonic distance sensor. Only uses a single pin on the Raspberry Pi GPIO
    8. Optional separate power for motors (up to 11V and 1.5A per motor)
    9. The output connectors can be used directly to drive servos
    10. I2C breakout connector (standard 4tronix I2C port)
    11. Includes 2 mounting pillars and screws so it can be securely mounted to your Raspberry Pi
    12. All of this is directly supported in Scratch GPIO 4 onwards - many thanks to Simon Walters for some excellent work
    13. Python library module and examples freely available
    This controller board is supplied fully assembled. No soldering is required.

    See the Blog entry for more information, software and examples
    Add to Cart
    £19.95
  • Ultrasonic Distance Sensor (Static) CrumbleBot Addon (BOTSONIC)
    Static Ultrasonic Distance Sensor for CrumbleBot

    This a simple, screw-together addon for all versions of CrumbleBot. Using the 2 mounting holes at the front, together with the power supply extension pieces (included) you can easily add distance sensing to your CrumbleBot.

    Using a single Croc Clip for the sensor reading and Crumble Software 25.2 or later, you can check if the CrumbleBot is about to hit an obstacle then avoid it if necessary.

    No soldering is required, and the kit can be assembled in a few minutes using only a small philips (cross head) screwdriver

    Contents:
    • Ready assembled ultrasonic PCB
    • Red positive power extension
    • Black negative power extension
    • 2 x M3 15mm hex pillars
    • 6 x M3 6mm screws
    • 2 x M3 nuts
    See our blog for assembly instructions

    Also see the Panning Ultrasonic Sensor addon
    Add to Cart
    £6.00
  • Ultrasonic Distance Sensor (Panning) CrumbleBot Addon (BOTSONPAN)
    Panning Ultrasonic Distance Sensor for CrumbleBot

    This a simple, screw-together addon for all versions of CrumbleBot. Using the 2 mounting holes at the front, together with the power supply extension pieces (included) you can easily add distance sensing to your CrumbleBot.

    This version of the kit includes a servo to allow you to move the ultrasonic sensor left and right, using the inbuilt Crumble software commands.

    Using two Croc Clips, one for the servo and one for the for the sensor reading, as well as Crumble Software 25.2 or later, you can check if the CrumbleBot is about to hit an obstacle then avoid using a more sophisticated algorithm than just a static (non-moving) sensor. Of course, you can simply not move the sensor and use the simple software shown in the static sensor listing

    The program shown above detects an obstacle within 15cm, then looks left and right to see which direction has the closest obstacle. It then reverses out of the way of the current obstacle, before turning towards the direction with most space to move.

    No soldering is required, and the kit can be assembled in a few minutes using only a small philips (cross head) screwdriver

    Contents:
    • Ready assembled ultrasonic PCB (moving)
    • Ready assembled servo PCB (static)
    • Servo, complete with various fixings
    • Red positive power extension
    • Black negative power extension
    • 2 x M3 25mm hex pillars
    • 6 x M3 6mm screws
    • 2 x M3 nuts
    • 4 way female-female 10cm cable to connect the sensor to the static servo PCB
    See our blog for assembly instructions

    Also see the static Ultrasonic sensor addon
    Add to Cart
    £10.00
  • Robo:Bit Buggy for the BBC Micro:Bit (RoboBit for Microbit) (RBITBUG)
    Robo:Bit DIY Buggy for the BBC Micro:Bit

    NB. BBC Micro:Bit is NOT included unless specifically selected with the checkbox

    This little buggy can be assembled very quickly using only a screwdriver. No soldering is required.

    It comprises several packs that are also available separately:
    • Robo:Bit robotics controller PCB
    • Fixings pack (battery holder, screws, mounting pillars, caster, etc.)
    • Wheels Motors and wheels
    • Optional extra: Line sensor pack
    • Optional extra: Ultrasonic distance sensor
    • Optional extra: McRoboFace - simply push the 4-pin connector of the McRoboFace into the 4 holes at the front of the Robo:Bit
    Using the basic kit you can learn about:
    • Controlling motors with simple Forwards / Reverse controls
    • Controlling the speed of motors in both directions using PWM
    • Use a second BBC micro:bit with the easy-to-use radio software to control the buggy
    • Use the motion sensor on the micro:bit to detect collision with obstacles and avoid them
    With the Plug-in Ulotrasonic Distance Sensor:
    • Detect when obstacles get close and change the program to avoid the obstacles
    • "Follow-Me" program that tries to stay a certain distance from the object in front
    With the Line Follower Sensor Pack:
    • Use the 2 line sensors either side of the non-reflective line to detect the line and keep the buggy on track
    • Write more complex programs that behave as required if you meet a T-Junction or crossing of lines
    • Compare different line following strategies - create a race-track and see which strategy is fastest
    • In combination with the distance sensor, make it avoid obstacles on the track and then re-acquire the line

    Assembly instructions in our blog
    Add to Cart
    £22.00
  • PlayHAT - Neopixels, Buttons and Buzzer for Raspberry Pi (PLAYHAT)
    4tronix PlayHAT for the Raspberry Pi - Learn while Playing on Raspberry Pi

    PlayHAT is a ready-assembled educational learning board with 9 full-colour neopixel LEDs with 4 big coloured buttons and a beeper

    It is a great way to start learning about use of GPIO in either Python or Scratch. It's very easy to program; use the python library or broadcast the ScratchGPIO message to set the LEDs to the colours and brightness that you want. The buttons and beeper can also be read easily in your software - each button is represented by a separate input pin. Switch the pin high and the beeper will sound—no need for complex PWM programming

    The LEDs are in a 3 x 3 Matrix allowing:
    · Randomising Dice
    · Traffic Light simulator
    · Simon game (remembering sequences)
    · Use the full matrix for cool flashing patterns!

    Works on all models of Pi with 40-pin connector: A+, B+ and 2B
    Download and install example software from our PlayHAT GitHub site
     
    Add to Cart
    £10.00
  • Bit:2:Pi BBC Micro:Bit adaptor for Raspberry Pi Addons (Bit2Pi) (BIT2PI)
    Bit:2:Pi Allows the BBC Micro:Bit to Connect to Raspberry Pi Addon Boards

    NB. BBC Micro:Bit is NOT included

    The Bit:2:Pi enables you to re-use all those hundreds of Raspberry Pi addon boards and HATs.

    Simply plug your Micro:Bit into the edge connector and the required Raspberry Pi Hat onto the GPIO connector, then program your Micro:Bit to control the new board. Most Raspberry Pi boards are very simple to program as they are controlled by simple on/off signals on the GPIO connector which are easily copied in the Micro:Bit. We have also used Neopixel hats (eg. Unicorn from Pimoroni) with great success and are happily communicating via I2C as well.

    Selecting which Micro:Bit pin is connected to which GPIO pin, is via a set of configurable jumpers. There is a default set of connections that works for the most common boards, including I2C and SPI connections, but it is a simple matter to unplug a jumper or two, and replace it with a longer wire jumper (4 included) to connect your preferred pins.

    Of course, the original code for the Raspberry Pi won't run directly on the micro:bit but with support from our community we will get more and more boards working and with example microbit code.

    Current boards tested are:
    4tronix: PlayHat, Picon Zero, PiStop, motor controllers
    Pimoroni: Pibrella, Unicorn pHat/HAT. Explorer, Enviro pHat

    This board is supplied in two versions:
    1. Fully soldered and ready to go
    2. All the surface mount parts ready-soldered, but leaving you to solder on the 3 headers and the power switch

    Power is supplied to the board and the micro:bit via the micro-USB connector on the side, but there is also an option to add a battery holder to allow completely wire-free operation.

    More details on our blog
    Add to Cart
    £8.00
  • 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
  • 1m Cable for Use with Playground and Gizmos (AUD1W)
    1m Cable for Playground and Gizmos
    (Works with Crumble and BBC micro:bit Playgrounds)

    The Playground system is an easy way to connect from Crumble or BBC micro:bit to useful Gizmos

    This cable is flexible and easy to use with Playground
    • 1m long
    • Gold-plated
    • White

    Ideal for use with your Playground and Gizmos

    1 Cable included
    Add to Cart
    £1.25
  • Traffic Lights Crumb Digital Output for Crumble Controller (CRTRFC)
    Traffic Lights Crumb for Crumble
    (Digital Output Crumb)

    This Crumb is fully compatible with the Crumble Controller and makes it easy to use Croc Clips to turn LEDs on and off under program control.

    Now with BIG 10mm LEDs!

    As well as the 3 LEDs in Red, Yellow and Green, this crumb contains a space for a connector so a PiStop can be plugged on directly

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

    See our Crumble QuickStart Guide
    Add to Cart
    £3.50
  • Super Crumble Starter Kit with Crumble Controller, USB & Crumbs (CRMSUPER)
    Crumble Controller - SuperStarter 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 Super 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)
    • USB Cable
    • Battery Crumb with Switch and indicator LED
    • Button/Switch Crumb
    • Traffic Light Crumb
    • Slider Crumb
    • Motor Crumb with wheel
    • Presented in a solid plastic parts case (we are now using a clear case, not the yellow one shown)
    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
    £29.05
  • PlayGround for Crumble - Starter Kit (PLAYCRUMST)
    Playground for Crumble - Starter Kit

    This is an exciting new way to use your Crumble, without requiring crocodile clips which can be difficult for small people to use.

    Also, this new approach allows the use of a single cable for most addons, instead of 3 crocodile clips

    This Starter Kit Includes:
    • Playground for Crumble (Crumble is optional extra)
    • 4 x Connection Cables
    • Traffic Light Gizmo
    • Dial Gizmo
    • Buzzer Gizmo
    • 2 x Flame Gizmos
    • Prototyping Gizmo

    Features:
    • Fittings for your Crumble (Crumble not included, unless selected)
    • Battery holder for 3xAA batteries permanently fitted (batteries not included)
    • Sturdy On/Off switch
    • Blue power indicator LED
    • White LEDs on all 4 inputs to show when active
    • All Crumble Input / Outputs are brought to standard Crumble connectors so you can continue to use existing Crumbs and Sparkles etc.
    • Each new connector includes the signal as well as power and ground
    • Fast and easy to connect

    Other Gizmos - Available now
    Many Gizmos are already available and more are on the way. Each Gizmo connects directly to the Playground with usually one connection cable (Traffic Lights uses 3 cables, one for each colour). As with our Crumbs, the Gizmos are colour coded:
    • Blue - Digital Input (eg. Button)
    • Yellow - Analog Input (eg. Dial)
    • Black - Digital Output (eg. Buzzer)
    • Red - Analog Output (eg. motors)
    • White - Smart pixels ("Sparkles")

    Here is a great video introducing Playground for Crumble

    Add to Cart
    £26.50
  • PlayGround for Crumble (PLAYCRUM)
    Playground for Crumble

    This is an exciting new way to use your Crumble, without requiring crocodile clips which can be difficult for small people to use.

    Also, this new approach allows the use of a single cable for most addons, instead of 3 crocodile clips

    Features:
    • Fittings for your Crumble (Crumble not included, unless selected)
    • Battery holder for 3xAA batteries permanently fitted (batteries not included)
    • Sturdy On/Off switch
    • Blue power indicator LED
    • White LEDs on all 4 inputs to show when active
    • All Crumble Input / Outputs are brought to standard Crumble connectors so you can continue to use existing Crumbs and Sparkles etc.
    • Each new connector includes the signal as well as power and ground
    • Fast and easy to connect

    Gizmos
    Many Gizmos are already available and more are on the way. Each Gizmo connects directly to the Playground with usually one connection cable (Traffic Lights uses 3 cables, one for each colour). As with our Crumbs, the Gizmos are colour coded:
    • Blue - Digital Input (eg. Button)
    • Yellow - Analog Input (eg. Dial)
    • Black - Digital Output (eg. Buzzer)
    • Red - Analog Output (eg. motors)
    • White - Smart pixels ("Sparkles")

    Here is a great video introducing Playground for Crumble

    Add to Cart
    £10.00
  • PIR Sensor Crumb Digital Input for Crumble Controller (CRPIR)
    PIR Sensor Crumb for Crumble
    (Digital Input Crumb)

    This Crumb is fully compatible with the Crumble Controller and makes it easy to use Croc Clips to show Digital (On and Off) inputs or use them to control LEDs or Motors.

    This Crumb has an infrared sensor module with high sensitivity to changes in IR levels - ie. moving people. You could easily use it for an intruder detector, or challenge the children to reach out and press a Button Crumb before the PIR Crumb detects them (they will have to move very slowly!)

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

    See our Crumble QuickStart Guide
    Add to Cart
    £4.50
  • Dual Touch Sensor Crumb Digital Input for Crumble Controller (CRTOUCH)
    Capacitive Touch Sensor Crumb for Crumble
    (Digital Input Crumb)

    This Crumb is fully compatible with the Crumble Controller and makes it easy to use Croc Clips to show Digital (On and Off) inputs or use them to control LEDs or Motors.

    This Crumb has 2 touch pads with indicator LEDs that light when the pads are touched.
    In addition, each pad has a croc clip compatible external connection to which alternative touch pads or objects can be connected (eg. fruit or even other children!)

    Fruit not included!

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

    See our Crumble QuickStart Guide
    Add to Cart
    £4.50
  • DC Motor Crumb Analog Output for Crumble Controller (Version 2) (CRMOT2)
    Motor Crumb for Crumble
    (Analog Output Crumb)

    This Crumb is fully compatible with the Crumble Controller and makes it easy to use Croc Clips to control the speed and direction of a small DC motor.

    This is metal gear motor (size N20) with a nominal speed at 6V of 80rpm.

    Because of the gearing, the motor turns at a speed of about 1 revolution a second, depending on the speed setting on the Crumble. This is a nice speed for little hands to work with - not too fast!

    Wheel included. Select either yellow or lilac

    NB. Version 1 of the Motor Crumb is no longer available as the motors are no longer manufactured

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

    See our Crumble QuickStart Guide
    Add to Cart
    £7.00
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