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Add some colour to your next coding project with our new Halo board for the BBC micro:bit. The Halo has 24 ZIP LEDs, which are individually addressable full-colour LEDs. This means that each LED can display a huge spectrum of colours, allowing amazing colourful effects to be achieved.

The Halo bolts directly onto the BBC micro:bit using five bolts which are secure and robust. The board also has extension connector pads (0.1” pitch) allowing more ZIP LEDs to be connected. The P1 and P2 micro:bit pins are also broken out to 0.1″ pads along with power and GND. This allows for additional connections to low power components such as sensors and switches.
zip halo for the bbc microbit makecode desktop
 

The Halo takes a supply voltage of 3.5V-5V and provides a regulated power supply to BBC micro:bit. Power can be connected using the JST input using a 3xAAA battery holder, LiPo battery, or JST lead. Alternatively, you can solder a power supply directly to the solder pads on the PCB.

The LEDs used are based on the WS2812B part which is compatible with any WS2812B driver code. They can also be coded in the MakeCode Block/Javascript editor.

Note:

  • This board does not come with a micro:bit, one can be obtained here.

Features:

  • Halo has 24 individually addressable ZIP LEDs.
  • Compatible with Adafruit NeoPixel and other WS2812B driver code.
  • Supply voltage: 3.5V to 5V.
  • Halo bolts directly onto the BBC micro:bit.
  • The board also has extension connector pads.

Contents:

Dimensions:

  • Diameter: 80mm.
  • Height: 3.2mm
  • Height With micro:bit: 10mm.
  • PCB Thickness: 1.5mm.

Video:

 

Requires:

Resources:

Documents & downloads

Technical Information

AttributeValue
PCB Diameter 80mm.
PCB Component Count 24 ZIP LEDs.
PCB Thickness 1.5mm.
Voltage Nominal (V) 4V.
Voltage Range (V) 3.5V-5V.
Current Max at Nominal Voltage (mA) 50mA at 5V per LED.
Built in blocking diode Yes.

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Questions and answers

    Is it possible to program this to work with an Arduino Uno R3 or Nano? If so, what driver libraries need to be installed?
  1. 0 votes
    Q Is it possible to program this to work with an Arduino Uno R3 or Nano? If so, what driver librar...... Read more
    Asked by Tim on July 9, 2020 12:00 am
    Answered by the admin Thank you for your question, the LEDs on this board are WS12812B Addressable LEDs from Adafruit so are Arduino compatible it would just need you to wire it up. In terms of libraries you can use the Adafruit Neopixel Library to control those LEDs which is on the link below.

    https://github.com/adafruit/Adafruit_NeoPixel

  2. Would it be safe to leave the Halo powered and connecting the micro:bit to USB at the same time for code upload? Is there a fuse or MPPT on the Halo?
  3. 0 votes
    Q Would it be safe to leave the Halo powered and connecting the micro:bit to USB at the same time f...... Read more
    Asked by Bill on June 18, 2020 12:00 am
    Answered by the admin
    Thank you for your question, it would be safe to do so as the micro:bit includes circuitry to make sure it only draws power from one source at a time, generally defaulting to the USB port.



  4. Hey, would a power supply rated at 5.5V be harmful?
  5. 0 votes
    Q Hey, would a power supply rated at 5.5V be harmful?
    Asked by Sats on August 12, 2019 12:00 am
    Answered by the admin Hi Sats,

    We wouldn't recommend going over 5V. The maximum that the data sheet suggests for the LEDs we use is 5.3V so you might get away with it but you could also very easily burn out your LEDs.

    Best Regards

    Cullen
  6. where can i get the enclosure?
  7. 0 votes
    Q where can i get the enclosure?
    Asked by tom jenquin on January 7, 2019 12:00 am
    Answered by the admin Hi,
    We don't actually sell any of the enclosures. my apologies.
    Many thanks
  8. Can I use an old USB power supply to power the ZIP Halo with?
  9. 0 votes
    Q Can I use an old USB power supply to power the ZIP Halo with?
    Asked by Claus Heisterberg on October 29, 2018 12:00 am
    Answered by the admin Hi Claus,

    Thank you for your question, in theory yes. The USB would supply 5V to the board you would need to cut an end off of the USB strip the wire back and then solder onto the power points on the ZIP halo and this should run without a problem.

    Best Regards

    Cullen
  10. Can the zip halo draw power from the microbit itself, via the micro USB?Or does it need to have its own independent power supply?
  11. 0 votes
    Q Can the zip halo draw power from the microbit itself, via the micro USB?Or does it need to have i...... Read more
    Asked by Satish Patel on July 26, 2018 12:00 am
    Answered by the admin Hi Satish, The ZIP Halo needs a voltage supply between 3.5-5V so it wouldn't be possible for the micro:bit to power the board. Instead the ZIP Halo board has been designed so that you power this via the power connections on the board and it then supplies a regulated voltage into the micro:bit directly.
  12. How bright is the light, if all are on white, full brightness?Would it be bright enough for my children to make a reading light?(They wanted to make a dimmable reading / mood / pattern light to put on wall by their bed)
  13. 0 votes
    Q How bright is the light, if all are on white, full brightness?Would it be bright enough for my ch...... Read more
    Asked by Mark on March 27, 2018 12:00 am
    Answered by the admin Hi Mark, When all the LEDs are on full brightness on white you would achieve around 44,400 mCd. So it would be very bright, we would suggest having the brightness turned down to create the mood light you are looking for. As an indication of how bright they are the photo on this page shows 5 of the same LEDs turn up full brightness on white, https://www.kitronik.co.uk/blog/automatic-headlights-for-move-mini The ZIP halo has 24 LEDs in total.
  14. If I power the microbit through the Halo it doesn't startup unless I give the microbit power from some other source first, which I can then remove. I read that there is protection in the power supply from the Halo to the BBC:microbit - hwo is this supposed to work?
  15. 0 votes
    Q If I power the microbit through the Halo it doesn't startup unless I give the microbit power from...... Read more
    Asked by Chris on January 29, 2018 12:00 am
    Answered by the admin Hi Chris, There could be a couple of issues that spring to mind but without further details it would be difficult to confirm for sure the problem. As such if you drop an email through to support@kitronik.co.uk with details on what the Halo board is being powered with and where it is connected, what the micro:bit is being powered from to get it to started and that the screws are secure.
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