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Kitronik Timer Solder Kit

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Quoting product code: A09RJ


About this product


  • Build a timed colour changing LED kit
  • Practice soldering and get familiar with components
  • Easy to solder with 13 parts

Product overview

• Build a timed colour changing LED kit
• Practice soldering and get familiar with components
• Easy to solder with 13 parts
• Requires two AA batteries (not included - Order Code L43AL)
• Designed and manufactured in the UK by Kitronik

What does this kit do?
Build a circuit that sets off an LED for a period of time. When you press the button, the LED changes from red to green and turns back to red after the time you set between 1 second and 4 minutes. The kit uses a 555 timer chip for the timing and a variable resistor (or potentiometer) to change the timing. Time a perfectly boiled egg or set up your own game of countdown with timed rounds – simply set your time and hit the switch.

What is in the kit?
This kit is fun and simple to solder – a great way to see how components work with each other. Get experience soldering resistors, potentiometers (variable resistors), capacitors, IC holders and a tri-coloured LED. This kit works by using a 555 timer chip that you can set by altering the resistance of the corresponding variable resistor. This kit requires soldering and may require wire cutters, a screwdriver and wire strippers (not included).

How easy is it to solder?
Perfect for beginners, this kit is easy to solder. It’s also a great introduction to 555 timer chips which are used in more complicated circuits. Once you’ve built the kit you may want to build an enclosure to protect it (not included), just take care not to block the switch or buzzer. This kit requires two AA batteries (not included).


Product Specifications

Soldering Required:


Dimensions & Weight





Hi ,can the Kitronic timer trigger a music generator or relay

Asked by: cliff
This really would be down to your own ability to modify the circuit design to achive your desired task. Unfortunately we are unable to advise on the modification or redesign of units I am afraid.
Answered by: Les
Date published: 2015-12-09

Are there any other way of knowing the alarm has been tripped for those of us with red/green colour blindness?

Asked by: Anonymous
I am sorry but the item in question does not support use in your intended application.
Answered by: Russell
Date published: 2015-09-14

Is the button to start a "countdown" alarm, or does the button both start and stop the alarm, or is the button just to reset the alarm?

Asked by: Anonymous
The button is a start stop button.
Answered by: Darren
Date published: 2015-09-11
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