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LED Picture Frame Kit

2.95
Easy Build
Exclusive to Kitronik
Teaching Notes
Key Stage 3
This kit allows you to illuminate the edge of a picture frame using a number of LEDs. Control the time that the LEDs are lit by setting a trimmer potentiometer.

Availability: In Stock.

Code1+ 5+ 50+
2146£2.95
(£3.54 incl VAT)
£2.20
(£2.64 incl VAT)
£1.90
(£2.28 incl VAT)
OR

This kit allows you to illuminate the edge of a picture frame using a number of LEDs. This happens for a period of time when the button is pressed. The duration is set using a trimmer potentiometer and can be anything from a few seconds to 30 minutes. The student can choose which LEDs they would like to use. These are connected to the terminal block (along with a current limit resistor). The board can drive 200mA, which is about 10 high brightness LEDs.

This kit includes:

PCB dimensions: 58mm x 28mm.

This kit is supplied as a pack of parts and requires soldering.

Click here to download the essential informationpdf_icon.gif

Click here to download the full teaching resources pdf_icon.gif

Selecting LEDs for using with the circuit.

The circuit can be used with a variety of LEDs. Below are a selection of LEDs that can be used. Also listed is the current limit resistor that will be required if four LEDS are used.

3504 Standard red33ohm
3505 Standard green33ohm
3506 Standard yellow33ohm
3542 Standard white22ohm
3543 Standard blue22ohm
3507 Ultra bright red33ohm
3524 Ultra bright white68ohm
3537 Ultra bright blue68ohm

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 2146.
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.


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Questions:

Posted by Brian, Friday, 3 February 2017 on product LED Picture Frame Kit
  • 0
    vote
    A:

    Hi Brian, The LED picture frame kit can drive up to 200mA, which is around 10 high brightness LED’s. We don’t stock any 3mm colour changing LED’s, however the 5mm we stock take around 25-50mA depending on the colour it displays. As such you would likely only be able to run around 4-6 colour changing LED’s. The best option would be to work out the total amount of current you would need with the 17 LED’s in parallel, then find a power supply that is best suited to the requirements.

    Posted by Michael Lockhart on Friday, 3 February 2017
Posted by Dan, Friday, 18 December 2015 on product LED Picture Frame Kit
  • 0
    vote
    A:

    As per your previous question this kit isn’t designed to run off 12V’s. The push button switch is only used to trigger the circuit, as there is no power switch on the circuit it is in a constant state of monitoring for the switch being pressed. If you want to conserve power you would need to add a power switch between the positive wire on the battery box and the positive input on the PCB.

    Posted by Michael Lockhart on Friday, 18 December 2015
Posted by Darren Macdonald, Wednesday, 25 November 2015 on product LED Picture Frame Kit
  • 0
    vote
    A:

    We dont do this kit with a USB power lead, this is the only version we stock.

    Posted by Michael Lockhart on Wednesday, 25 November 2015
Posted by Dan, Monday, 16 November 2015 on product LED Picture Frame Kit
  • 0
    vote
    A:

    Batteries will slowly discharge over time, also this circuit isn’t designed to work off 12V’s and as such there may be some current leaking through the circuit.

    Posted by Michael Lockhart on Monday, 16 November 2015
Posted by Dan, Friday, 2 January 2015 on product LED Picture Frame Kit
  • 0
    vote
    A:

    Hi,

    You could use a different transistor with a higher current rating such as the BC337. This has a maximum continous current rating of 800mA. If you need more current than that you likely need a different circuit like a motor driver board or similar.

    Posted by Aaron Sturman on Friday, 2 January 2015
Posted by Dan, Tuesday, 23 December 2014 on product LED Picture Frame Kit
  • 0
    vote
    A:

    The capacitor won’t have any impact on the output of the board, this will just increase the time of discharge and thus the LED’s will light for longer. The FET will determine the maximum output, in this case the maximum the FET and board can handle is 200mA.

    Posted by Michael Lockhart on Tuesday, 23 December 2014
Posted by Terry Meade, Tuesday, 7 October 2014 on product LED Picture Frame Kit
  • 0
    vote
    A: Although the board is supplied with a 3x AA battery box, giving a typical voltage of 4.5V there is nothing on the board that would stop it from running off 12V. That said the way the timing works in the normal circuit is to fully charge a capacitor to 4.5V when the switch is pressed and then discharge it slowly through the trimmer potentiometer. The FET that detects the capacitor voltage switches at about 2V or 2.5V remaining across the capacitor, which is approximately when the capacitor is half discharged. Swap the power for 12V and it will only have to discharge 2V of 12V about a sixth rather than a half so the max duration will be reduced to around 10 minutes. The max output current of the board is 200mA so you would need to make sure that the LED strips took less power than that or added a relay to the output of the board. If 200mA is not enough power then you might be better using the relay board kit which drives much larger loads.
    Posted by Geoff Hampson on Monday, 6 October 2014
  • 0
    vote
    A: Given you are looking to keep the same maximum time, the capacitor C1 is currently a 220uF and there shouldn't be a problem increasing it to a 1000uF which should sort the time delay out, though you would need to give it a try.
    Posted by Geoff Hampson on Tuesday, 7 October 2014
Posted by Terry Meade, Wednesday, 23 October 2013 on product LED Picture Frame Kit
  • 0
    vote
    A: We sell a PIR detector but if you are looking to use it you would be better off designing your system using a microcontroller like an Arduino Uno instead of using this LED picture frame kit. https://www.kitronik.co.uk/products/sparkfun-electronics-products/add-on-modules/pir-motion-sensor/ .
    Posted by Aaron Sturman on Wednesday, 23 October 2013
Posted by Myke Pocock, Wednesday, 27 June 2012 on product LED Picture Frame Kit
  • 0
    vote
    A: Yes it is possible for schools to request a free sample of this kit. The easiest way to do this is to fill in the online form which can be found by clicking on the samples icon (the PCB) in the product description or by navigating on the top menu to services > samples.
    Posted by Geoff Hampson on Wednesday, 27 June 2012

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