Miniature LDR

Stock code: 3514-01

Pack Size: Single
Pricing:Ex VATInc VAT
1+ £0.39
(excl. VAT)
(inc. VAT)
Discontinued - This page is for reference for existing customers of this product. It is not possible to buy this item.


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.


  • 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

can i use this LDR to activate motors with 3-5 v?
Asked by: rie

Hi Rie, You could use this to act as the trigger for turning a motor on, you may be better using it in this kit as it is designed to switch an output on. However it can only provide 500mA to the output device so you may need to use a relay to enable you to drive a motor.

Answered by: Michael Lockhart

I need to replace a CdS cell in my Konica Auto S3 rangefinder camera. This sits near to the lens and is obscured by variable aperture depending on the shutter speed set. I am guessing it is about 4mm but I have not disassembled it yet. What rating photoresistor am I likely to need?
Asked by: David Shackleton

Hi David, As this is a specific piece of kit you would need to refer to the manufacture for information on replacement parts. Sorry we can’t offer any further advice.

Answered by: Michael Lockhart

OK So I want to make a animatronics spider, now to make it move im using a 3v vibrating motor but want to know if I could use the LDR so that when it looses a certain amount of light it can make the bug jitter to a certain direction. also what would I use if I wanted it to follow a white line etc..?
Asked by: Abdul

You wouldn’t be able to alter the direction that the motor would move the spider in, this motor would provide a very uncontrollable movement. We do have a line following kit however you would require the motor driver board and a few other components.

Answered by: Michael Lockhart

Hello - I am interested in using a miniature LDR for a public art installation. In my plan, I would blackout all light, give visitors flash lights, and have sound effects play as flashlights scan photographs. Is it feasible to wire a photo frame with your LDR such that ambient sound can be triggered by flashlight lumens? I am not an electrical engineer. From you I guess I want to know if anything in my plan sounds fundamentally flawed before I hire an engineer to design with your product. Thanks!!
Asked by: Whit Baker
Entirely possible! Sounds like it would be really cool too. I'd love if you could take some photos or something of the finished installation and send them to us!
Answered by: Aaron Sturman

Dear Sir,

Presently in our company we have 45 w LED street lights?
can you suggest me which type of ldr is suitable and better?
Can we operate the in certain levels of lux these ldr's as per our requirement.?

Awaiting for your response.

Asked by: prasad
Either of our LDRs could be used for any reasonable light level. The rest of the circuit is what determines the trigger point or value.
Answered by: Aaron Sturman

Is this the same LDR as supplied with the Moodlight Kit ( dark activated colour changing LED kit )
Asked by: John Land
Yes all out kits use the same LDR which is this one. The only time that we sell a different LDR is when it is in a PICAXE kit.
Answered by: Geoff Hampson

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