Asked by: Helen
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Kitronik Colour Changing Night Light Kit with batteries
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Kitronik Colour Changing Night Light Kit with batteries and soldering starter kit
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Description
The colour-changing LED in this nightlight kit is automatically illuminated and starts to cycle through various patterns when the light sensor has detected that is dark. The kit uses a light-activated board with a colour-changing LED. The kit includes the light-activated switch project kit (part 2112), accompanied by a battery clip, battery cage and rainbow LED. All are individually bagged and ready for your students to build.
Features:
- When in darkness, this Easy Build Kit generates an array of different coloured illuminations using a Colour Changing LED.
Contents:
- 1 x 1MΩ Potentiometer.
- 2 x BC337 NPN Transistor.
- 1 x 220Ω Resistor.
- 1 x Phototransistor.
- 1 x Colour Changing (Rainbow) LED.
- 1 x PP3 Clip Leads.
- 1 x 4AA Battery Holder.
- 1 x Night Light PCB
Dimensions:
- PCB Length: 53mm.
- PCB Width: 25.5mm.
Requires:
- 4 x AA Batteries.
- Soldering Iron.
- Solder.
- Wire Cutters.
Note:
- This kit requires soldering.
Free samples:
Teachers can order a sample of this kit (one per school) request a sample kit.
You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2120.
Note: this service is only offered to schools for evaluation purposes only.
Buy British:
This product is designed and manufactured in the UK by Kitronik.
Same Day Dispatch
- Orders placed online before 3:00pm Monday - Friday (excluding public holidays and our Christmas shutdown period) are always dispatched the same day provided the goods are in stock. If the goods are not in stock we will endeavour to contact you as soon as possible to discuss a dispatch date.
UK Deliveries
- If you live on the UK mainland and don't have any large materials or lithium batteries in your order it will cost £3.95 (£4.74 including VAT) if you spend less than £40 (£48 including VAT).
- If you spend between £40 and £200 (£48 - £240.00 including VAT, excluding large materials or lithium batteries) delivery is free to most locations, £12 (£14.40 including VAT, excluding large materials or lithium batteries) to Northern Ireland and £15 (£18.00 including VAT, excluding large materials or lithium batteries) to UK remote locations. For a list of postcodes that will be charged the remote location rate: remote area list.
- If you spend over £200 (£240.00 including VAT, excluding large materials or lithium batteries) delivery is free within the UK.
Rest of the world
- These orders are sent via UPS, and the cost is dependant on the service you choose at checkout. Alternatively you can choose the free collection option and have your own courier collect it from us. International orders can only be shipped to the registered card address. Please note: International orders may be charged import duty dependant on local import laws and duty rates. These charges are usually billed to you directly from UPS.
- Delivery times vary for international orders depending on the service selected and the destination. You can see the delivery time and cost at the shipping stage, or by using the shipping estimator from within the shipping basket.
Collection
- If you would like to collect your order, or use your own courier then there is an option you can select during checkout. We do not charge a packaging or handling fee for this service, and you will receive an email when your order has been processed, you can collect half an hour after receipt of this email.
Further Information
- For information about all of the delivery options we offer see full delivery details.
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Q:
Hi, could I attached a 12v DC plug to this kit and strip LED's? Would it still work then?
A:
Hi Helen,
Thank you for your email, I am afraid that 12V would damage many of the components on the board.
You could use the kit below though to act as a light activated switch.
https://www.kitronik.co.uk/2112-light-activated-switch.html
Best Regards
Cullen
Answered by: Cullen Lewis
05-Mar-20
Q:
Can you use multiple bulbs on the board or does it only work with one?
Asked by: siena davis
A:
Hi Siena,
Thank you for your question, you can theoretically put more than one LED into the circuit. You would need to connect them in parallel though otherwise the voltage would be divided across them and they would no longer function.
Best Regards
Cullen
Answered by: Cullen Lewis
23-Nov-18
Q:
Is there a different kit or way to make the LDR work the opposite way aka turn on when it detects light?
Asked by: Sophie Chittenden
A:
Hi Sophie, The dark activated light kit uses the same PCB as our light activated switch kit (2112) as such if you swap the LDR and Potentiometer around, so the LDR is in 'R1' and the Potentiometer is in 'R2' it should work as a light activated circuit.
Answered by: Michael Lockhart
07-Sep-18
Q:
can a 9volt battery be used in place of the 4 1.5v pack? which resistor would need to be replaced?
Asked by: Richard
A:
Thank you for your question,
Provided that you increase the rating of the resistor and the battery can supply the necessary current draw that should be fine. You would need to replace the 220R resistor marked as R4 on the board with something around the 330 Ohm Mark.
Best
Cullen
Answered by: Cullen Lewis
06-Jun-18
Q:
What's the maximum lux value which the LDR can with stand?
Asked by: Pravan kumar
A:
Hello Pravan, I have checked the datasheet for the LDR used on this kit and there is no maximum Lux rating for the item. I have also checked with our R&D team and they have said that once you shine the maximum amount of light on the resistance of the LDR should be zero, shining more light onto the LDR should result in the resistance staying at zero.
Answered by: Michael Lockhart
07-Mar-18
Q:
Is their a simple way to convert this circuit to run from a USB cable as per the standard colour light changing circuit?
Asked by: Clive
A:
Sorry for the delay I wanted to test it for myself!
Yes it works fine from USB. It normally runs from 6V but I tested it down to 4V and it worked fine. A USB lead supplies 5V so that?s ok.
We sell a cable that goes into a USB port and the other end has two wires, positive and negative. You just solder these into the PCB where you would normally put the batteries.
The product code for the cable is 4101 and the product page is here http://www.kitronik.co.uk/products/batteries-holders-chargers-usb-power/power-supplies-and-usb-power/usb-power-lead/
Yes it works fine from USB. It normally runs from 6V but I tested it down to 4V and it worked fine. A USB lead supplies 5V so that?s ok.
We sell a cable that goes into a USB port and the other end has two wires, positive and negative. You just solder these into the PCB where you would normally put the batteries.
The product code for the cable is 4101 and the product page is here http://www.kitronik.co.uk/products/batteries-holders-chargers-usb-power/power-supplies-and-usb-power/usb-power-lead/
Answered by: Aaron Sturman
28-Apr-14
Q:
Hi We are having a problem with a number of our kits/ circuits not working.Some one at school has mentioned that we may have the wrong voltage soldering iron. Is there a minium / maxium voltage soldering iron that we should be using? Thanks
Asked by: Michelle Westwood
A:
Hi Michelle, they probably were talking about the power rating of the soldering iron. For our kits we would advise something around 18-22W, more powerful soldering irons are available but they heat things up much more quickly which can mean students sometimes burn the board or components and damage the tracks. That said, the rating of the iron itself can't stop the kits from working. I'd recommend you send some photos of the kits that aren't working to support@kitronik.co.uk so I can take a look at them.
Answered by: Aaron Sturman
11-Jun-13
Q:
How long would 4 x Duracell or equivalent batteries last?
Asked by: Terry
A:
Roughly 80-90 hours of the LED being on, but that?s a very rough theoretical answer. Your mileage may vary as batteries vary a lot but when its on it will draw about 25mA and an AA battery holds approx 2000mAh.
Answered by: Aaron Sturman
10-Jun-13
Q:
How much would you charge for around 300 circuits?
Asked by: jonmartlew
A:
There's a page here that explains bulk discounts, http://www.kitronik.co.uk/ordering/bulk-buy-discount-for-kits/ if you put the number you want into the product page and click add to cart the cart will show the discount you would receive.
Answered by: Aaron Sturman
22-Apr-13
Q:
Hi Is it possible to connect more than one led in this circuit?
Asked by: Corinne Tye
A:
Yes you can connect more than one LED, though the LEDs won't say in sync with each other. The number of LEDs that you can connect will be determined by the gain of the transistor I suspect that you should be able to connect 3 or 4 LEDs. If you connect more than the gain allows for you won't damage anything, it will just be a case of the LEDs not being as bright and possibly having the colour sequence restarting from the beginning.
Answered by: Geoff Hampson
14-Mar-11
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