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2131_large_usb_powered_colour_changing_lamp_kit

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Colour Changing USB Lamp Kit

2.5
Easy Build
Exclusive to Kitronik
Teaching Notes
Key Stage 3
Build a computer desk ornament using this simple USB powered board. The Colour Changing LED slowly cycles through a range of colours.

Availability: In Stock.

Code1+ 5+ 50+
2131£2.50
(£3.00 incl VAT)
£1.85
(£2.22 incl VAT)
£1.55
(£1.86 incl VAT)
OR

Build a computer desk lamp or ornament using this simple board. This kit is the colour changing version, it is also available in a white version. The board takes power from a USB port and the light can be turned on / off with the on board switch.

Features:

  • Colour Changing USB Lamp Kit.
  • The Colour Changing LED slowly cycles through a range of colours.
  • The board takes power from a USB port and the light can be turned on / off with the on board switch.
  • This kit is also available in a white version.

Contents:

Dimensions:

  • PCB Length: 44mm.
  • PCB Width: 16.5mm.

Requires:

Resources:

Note:

  • This kit requires soldering.

Free samples:

Teachers can order a sample of this kit (one per school) here. You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2131.
Note: this service is only offered to schools for evaluation purposes only.

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

Physical characteristics:

  • PCB Length: 44mm.
  • PCB Width: 16mm.
  • PCB Component Count: 4.

Electrical characteristics:

  • Voltage Nominal: 5V.
  • Voltage Range: 4V - 5.5V.
  • Current Max at Nominal Voltage: 67mA.
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USB Lamps from Cardinal Allen Catholic High School
These USB Lamps were sent in by Helen Herd, lead of Design and Technology at the Cardinal Allan Catholic High School done by Year 10 students
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Haywood Academy Amplifier And Lamp Cases
Steve Fergusson, the Head of DT at Haywood Academy in Burslem Stoke on Trent, sent us some excellent examples of innovative student designs for Amplifier and Lamp cases. The cases were designed and made by GCSE and A Level Product Design students and display a high level of creativity in all of the Students involved.
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Gallery USB Lamp – Meadows Community
USB Lamp by Meadows Community.
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Gallery USB Lamp – Great Houghton School
A range of colour changing USB lamps made by year 8 students at the Great Houghton School in Northamptonshire.
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Gallery USB Lamp – Babington College
USB Lamps by students at Babington Community Technology College.
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Gallery USB Lamp – South Shields Community School
USB Lamp, a year 9 project at South Shields Community School.
Ask Kitronik USB Lamp Kit
Video USB Lamp Kit
A video about our USB Lamp Kit taken from our Ask Kitronik Live event 2012.
Colour USB Lamp Kit
Video USB Colour Lamp Demo
USB Colour Lamp Kit demo video.

Questions:

Posted by Wendy H Hayes, Monday, 9 November 2015 on product Colour Changing USB Lamp Kit

Question:

Could you tell me which specific colour changing LED is used and which resistors (part numbers if possible) so I can order a number of spares for use by those who manage to break/blow the one's in the kit, rather than taking parts out of other kits. Many thanks.

Answers:

Posted by Kate, Monday, 2 November 2015 on product Colour Changing USB Lamp Kit

Question:

Can you tell me what colours the LED changes through please?

Answers:

  • Posted by Michael Lockhart on Monday, 2 November 2015

    The sequence for the colour changing LED used in the kit is as followed: Red, green, blue, yellow, cyan, magenta then back to the beginning of the cycle. As the change is a gentle fade you do get colours between these in the cycle, such as the fade between red and green will produce an orange/yellow glow for a short period before fully changing to green. The time between each change varies depending on what the next colour in the sequence is, so the amount of time the colour stays on for does vary slightly although there isn’t a large difference in time variations.

Posted by Mike Penn, Wednesday, 11 March 2015 on product Colour Changing USB Lamp Kit

Question:

The dimensions stated on the technical drawing of the PCB suggest that the LED is obstructing the 3.3mm mounting hole closest to it? Can you please confirm the correct dimensions of the PCB stating accurately the mounting hole positions and position of the LED. e.g. Your drawing states a 3.3mm mounting hole 4mm from the PCB edge with a 5mm diameter LED 4.5mm from the opposing PCB edge. Therefore 4+1.65+4.5+2.5=12.65mm. The PCB is 11.5mm wide. I realise there is 0.5mm offset in the adjacent direction but this doesn't give any room for the head of a fixing in the mounting hole?

Answers:

  • Posted by Michael Lockhart on Wednesday, 11 March 2015

    The actual width of the PCB is about 16.5mm, as stated on the product page. However there appears to have been a mistake made when the technical diagram were created for the teaching notes. Thank you for pointing this mistake out to us.

Posted by Ryan Ball, Tuesday, 10 March 2015 on product Colour Changing USB Lamp Kit

Question:

I would like to use 5 of these leds in a model and power them off a 9V battery or a 12v adapter. Is this possible? Many thanks

Answers:

  • Posted by Michael Lockhart on Tuesday, 10 March 2015

    The colour changing LED 3527 is designed to run off a 2.7 to 5V supply and contains three LEDs, one for red, green and blue. There is a microcontroller inside the LED that turns on the different LEDs to make the required colour so if you want red then the red LED is turned on, but for purple it is both the red and the blue LED that is turned on. This means that the LED will take twice the power when it is showing purple than when it shows red. Using a current limit resistor with an LED only works when the current it consumes is constant, in this case since the current varies then it isn’t a good idea. It might be possible to get the voltage over the LED to stay in the range 2.7 to 5V however this might not be possible and could be very tricky and even if you managed it the brightness of the LED would vary depending on the colour. So what you should do with the LED is use a 5V supply or regulate to 5V if you must use a 12V supply. A suitable 5V supply is:
    www.kitronik.co.uk/2265

Posted by Simon Fowler, Tuesday, 10 March 2015 on product Colour Changing USB Lamp Kit

Question:

Hi, Can you specify how I can add an ldr light activated switch. A circuit diagram and components would be nice as I am hoping to introduce this in to our school curriculum. Many thanks.

Answers:

  • Posted by Michael Lockhart on Tuesday, 10 March 2015

    The easiest way to do this is to use the Light activated switch circuit, code 2112. You would then need to buy the USB power cable, code 4101 which would be connected to the power terminal on the board, and the colour changing LED, code 3591 which would be connected to the output terminal on the board.

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