LED kits

Tritium glow markers are mostly illegal nowadays in Australia, but we show you how to build an LED equivalent that can run a year or more on a pair of button batteries. This kit lets you build a...

This kit allows you to put together a simple LED light which is powered by 3 x AA batteries and will run continuously for around a year. Developed by Russell Gurrin and featured in Renew magazine, it...

As reviewed in DIYODE magazine, September 2021. This kit is much more versatile than cheap Chinese LED testers. Unlike the cheaper testers, this kit not only tests two-pin LEDs at a range of...

This is a bare PCB set for our LED tester kit. You get three PCBs - the front panel, main component PCB and the back panel (each board measures 64 x 85mm). No components are supplied. Download the...

This kit allows you to put together a simple LED torch (flashlight) which is powered by 3 x AAA batteries. Developed specifically for primary schools, where soldering is not allowed, rather than the...

Got old 9 volt batteries lying around? This kit makes good use of them! Every year when you change smoke alarm batteries, you end up with a handful of 9 volt batteries that are essentially okay, just...

This simple kit uses one IC to alternately flash two pair of LEDs, much like the flashing lights on emergency vehicles. The kit runs from 9V to 12V DC and will run from a 9V battery, 12V battery or a...

This simple kit uses one IC to flash a pair of LEDs at a low level using an extremely low average current. The kit runs from 9V DC and will run continuously from a standard 9V PP3 (transistor radio)...

This is the bare PCB for our Forever Flasher kit. This simple kit uses one IC to flash a pair of LEDs at a low level using an extremely low average current. The kit runs from 9V DC and will run...

This is a linear LED constant current driver that can provide up to 700mA of current to drive LEDs. While switchmode drivers are usually very efficient, they can have the drawbacks of higher...

This simple kit uses one IC to flash a power LED at a rate of 0.5Hz to about 5Hz, adjustable with a trimpot. The pulse width is also adjustable from around 50% down to under 5%. Ideal for adding a...

This simple kit uses a handful of discrete components to flash a single LED at a low level using an extremely low average current. The kit runs from 3-12V DC and will run continuously from a standard...

This is just the PCB from our micropower flasher kit. If you have your own components and just want a neat PCB to put them on instead of breadboarding, this is what you want. This simple kit uses a...

This neat little kit uses a 555 timer and some other components to make a touch activated light. Once the kit is built, just touch the touch plate and the white LEDs come on for the preset time as...

This simple kit allows you to create a 2 LED alternating flasher. The circuit is based on a two transistor oscillator, one of the oldest electronic circuit designs. There are no ICs and it is a very...

These nice little kits use a few components to make a simple LED torch that is powered by a single AAA battery (rechargeables work fine). The LED is driven by a YX8115 LED driver IC, which boosts the...

This simple little kit uses an LM358 IC to make eight blue LEDs "breathe" - they ramp up and down rather than flashing on and off. There is a trimpot on the board to adjust the breathing rate, from...

This simple little kit uses a 555 timer IC to drive a 4017 IC to light one of 10 LEDs in sequence. Note that this is a new smaller version using SMD ICs and other components (with through-hole LEDs,...