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...
$38.00
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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...
$7.00
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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...
$5.00
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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...
$6.00
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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)...
$5.00
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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...
$0.50
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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...
$8.50
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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...
$6.00
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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...
$3.00
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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...
$2.50
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