What’s the surprise?
The surprise is that such a spectacular display of colour can come from such a plain-looking light-emitting diode. When switched on, the l.e.d. gradually changes colour over about 30 seconds and then the sequence repeats. Placing a cut-glass tea light holder or tumbler over the l.e.d. enhances the display.
Please have a look at a working "L.E.D. Surprise 1" circuit on the Irby Electronics YouTube channel.
When this circuit was tested, a set of Duracell Plus Power batteries was still producing a good light output after 140 hours of continuous use.
The circuit is made on foam board (approx. 11 cm x 7 cm) and requires 3 x AA batteries (not supplied). Just 3 joints are needed to make this circuit and these joints can be made by simply twisting wires together and then crimping the connection with pliers. Soldering, however, makes a better electrical joint. Please see Kit 7 for an alternative version of this circuit constructed on track board.
These tools are needed to make this kit (not supplied):
small pliers for bending component leads,
slotted screwdriver for securing foam board to wooden base,
small, low power soldering iron, e.g. 15 watt, 18 watt or 25 watt (only if soldering is to be attempted).
Please read the safety warning in the About Irby Electronics section before ordering a kit.
Shipping & delivery
This item will be posted to you by Irby Electronics within 3 days of receiving payment.
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You have 14 days, from receipt, to notify the seller if you wish to cancel your order or exchange an item.
Unless faulty, the following types of items are non-refundable: items that are personalised, bespoke or made-to-order to your specific requirements; items which deteriorate quickly (e.g. food), personal items sold with a hygiene seal (cosmetics, underwear) in instances where the seal is broken.