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5V USB DIY Funny Christmas Shaking Bell Wobbly Windbell Electronic Flash LED Kit

US$ 15.14 US$41.18 -63% Tax Included
Only 1 left - dispatched on Jan 31 - Feb 02
Maximum: 1



Operating voltage: 4.5 - 5V
Dimensions: 92 x 89mm

How it works:
Composed of Q1, Q2 harmonic oscillator, to control two sets of LED lights flashing alternately, 83pcs LED arranged in a swinging bell shape.
Multivibrator works as follows:

Because the parameters of components can not be exactly the same, so when power it on, Q1 or Q2 will switch on, assuming Q1 switch on first, Q1 collector voltage reduce to 0V, this time group A LED light; due to the voltage across of capacitor can not change suddenly, Q1 0V collector voltage through C1 makes Q2 base potential is also reduced to 0V, Q2 turn off, at this time the group B LED does not light. As the charging voltage of C1 increases, when rises to Q2 and switch on voltage, Q2 is turned on, Q2 collector voltage drop to 0V, this time the group B LED light emitting; Similarly, 0V of Q2 collector via C2 made the base potential is reduced to 0V, Q1 off, at this time group A LED does not emit light. Then C2 charging start to repeat the process, making two sets of LED alternating continuous cycle luminous. Wherein C1, C2, R21, R22 determine the frequency of two sets of LED flash alternately, changing their parameters can be changed the wobble frequency.

Note: No instruction supply, please note about this before you buy it.
This is a DIY kit, you need to soldering by yourself.

File download:

Package included:
1 x Shaking Bells kit

1. Return Policy:

Every order from Newchic has a 30-day return or refund guarantee.


  1. Within 30 days from the date you received the item.
  2. Items received unused, undamaged and in original package.
  3. Return shipping fee is paid by buyer.

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2. Delivery:

We offer different international shipping methods.You can choose your preferred method on the checkout page.The cost of shipping varies based on the shipping method selected.

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