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This easy-build bike light kit has just ten parts, making it a good introduction to electronics. The kit uses two ultra-bright red LEDs, which flash rapidly, providing a highly visible light. Making it ideal for use as a rear bike light.

Alternatively, it can be used as a night safety product or for flashing eyes.

Features:

  • Easy build kit making a great introduction to electronics.
  • Great visibility for nighttime safety.

Contents:

Dimensions:

  • Length: 48.5mm.
  • Width: 25.5mm.

Requires:

Resources:

This easy build bike light kit has just ten parts, making it a good introduction to electronics. The kit uses two ultra bright red LEDs, which flash rapidly, providing a highly visible light. Making it ideal for use as a rear bike light.

Alternatively, it can be used as a night safety product or for flashing eyes.

Caution:

  • This is an educational kit and should be used in conjunction with a commercially available bike light.

Documents & downloads

This easy build bike light kit has just ten parts, making it a good introduction to electronics. The kit uses two ultra bright red LEDs, which flash rapidly, providing a highly visible light. Making it ideal for use as a rear bike light.

Alternatively, it can be used as a night safety product or for flashing eyes.

Caution:

  • This is an educational kit and should be used in conjunction with a commercially available bike light.

Technical Information

AttributeValue
PCB Length 49mm.
PCB Width 25mm.
PCB Component Count 10.
Voltage Nominal 3V.
Voltage Range 2-4V.
Current Max at Nominal Voltage 15mA.

Related resources

3 reviews for Kitronik Rear Bike Light Project Kit

  1. Danny

    Great product, used it for my engineering project and got a high grade, thank you

  2. Mr Fraser

    A nice little circuit board but no switch included to turn it off. Easy enough to add one yourself but should probably be noted somewhere that you also need to get switches to use it outside of a workshop.

  3. charlie

    good

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Questions and answers

    Is there any way a switch can be fitted to this ?Kind regardsAndy
  1. 0 votes
    Q Is there any way a switch can be fitted to this ?Kind regardsAndy
    Asked by Andrew Trent on March 27, 2018 12:00 am
    Answered by the admin Hi Andrew, Yes it is possible to add a switch to the kit, there is an example of doing this in the build instructions on page 4 of the following document, https://www.kitronik.co.uk/pdf/2106_rear_bike_light_essentials_2_0.pdf
  2. How long should these batteries last, I am looking for some kits suitable for dummy alarm boxes, ideally to last about 1 year, even if only 1 led, what do you suggest?
  3. 0 votes
    Q How long should these batteries last, I am looking for some kits suitable for dummy alarm boxes, ...... Read more
    Asked by Domby on August 28, 2012 12:00 am
    Answered by the admin A good quality set of AA batteries will give you a capacity of 1500mA/h. The kit takes approximately 10mA so will last about 150 hours which is about a week. The only way you will get the battery life up is to have the LED on very briefly compared to the amount of time it is off. If you have an LED on for a tenth of a second every 5 seconds then it will use a fiftieth of the power. At which point it should work for about a year. I couldn't guarantee it would work with the bike light kit. We don't however do anything that would do this but it could be implemented with a 555 timer or a PIC microcontroller. However if you plan on doing it you will need to consider that the IC is going to take some current and make sure this is kept to a minimum. i.e. PIC chips have a low power sleep command and 555 timers are also available in a low current version. website It may be possible (but I've not tried) to remove LED2 and then increase the value of R2 and/ or C2. If this does work then I suspect that as the LED turns on / off that it will fade up / down as the transistor is working at the switching point. It therefore might not give the current saving you're looking for.
  4. Will this circuit work if I substituted the AA battery holder with 1 Coin type battery both will be at3v. Will the coin battery have enough power. The reason for asking is that with the AA battery holder it make the project rather bulky.
  5. 0 votes
    Q Will this circuit work if I substituted the AA battery holder with 1 Coin type battery both will ...... Read more
    Asked by graham on March 21, 2012 12:00 am
    Answered by the admin Yes if you use a CR2032 coin cell it can deliver up to 10mA which is enough to run the circuit. It should last for around 10 to 15 hours.
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