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Robotics & Electronics > Electronics Sets

Flashing LED Circuit DIY Electronics Kit

Item#: 16350   5 star rating 11 customer reviews
Price: $2.59 /each
$2.49 /each (buy 30+)
$2.39 /each (buy 100+)
IN STOCK Ships in 1-2 work days
from our Lakewood, CA warehouse.
Add to cart to see shipping cost.

We have 1162 pcs in stock.

This is an excellent introductory kit that allows you to explore circuitry, electronics, and soldering all while completing a fun experiment that yields a small flashing LED, programmed by the circuit you've just built!  Includes full-color instructions, a copper pcb board, battery connector, and all the electornic components you need to get started, save for a soldering iron and a 9V battery.  Makes for a fun and illuminating science fair project for aspiring electronic or robotic researchers. 


  • Build a working electronic circuit using soldering skills and a pcb board!
  • Completed project yields a flashing LED circuit
  • Includes pcb board, battery connector, and all the electronic components necessary
  • Full-color, detailed instructions
  • Makes for an excellent basic science fair circuitry and electronics project


  • LED light color: Blue
  • Period: LEDs blink at approximately 0.4 second intervals (2.5 Hz)
  • Working current (at 9V): 14mA
  • Circuit board size: 23 x 23 mm

NOTE: Requires soldering equipment and 9V battery (not included).

14 +
Approx. Ship Size:
5.00 x 5.00 x 0.25 inches
12.70cm x 12.70cm x 0.64cm
0 lb 1 oz
0.01 kg

Small parts. Not for children under 3 yrs.

Prop 65 Warning SignWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Customer Reviews

5 star rating  Alternating LED Flash kit
Just as described and easy to assemble. Will definitely buy again.

5 star rating   B.D. from Macedonia , OH
Simple to assemble and easy to see.

5 star rating  DIY Flashing LED Circuit
John Holmes from USA, Washington, Bothell
I built the kit and used it in a model robot. Looks really cool flashing red!

5 star rating  Flashing LED Circuit Kit
R.D. from Macedonia, OH
Perfect item for my use as flashing police headlights. Works every time.

5 star rating  Great Kit
Aaron from California
This is a great soldering kit. It's very reasonably priced and great practice. I bought 2 of them and soldered one with an on/off switch and the other with a momentary switch.

5 star rating  Flashing LED Circuit Kit
Robert Doles from Summit Co. OHIO
Excellent size for builing police cars. Perfect for headlight flashers and taillight flashers. Easy to build, compact size and perfect price. Very happy with product. Will purchase more when needed.

5 star rating  Flashing LED Circuit Kit
Jim from Wallingford, CT
Good kit, all parts are there, easy assembly, (assuming you can solder), Instructions available online to print out, Works well when complete. Mine will be used to mimack ditch lights on a model railroad engien.

5 star rating  Great kit
Jim from Long Beach, Ca
I bought these for a personal project but used them to demo circuit building for my jr, high class online. I will order more. There great.

5 star rating  excellent value & quality
sam basile from syracuse, ny usa
nothing but praise for this item. it works down to 3 volts. i used them for flashers for ho train signals. you have to adjust the resistors depending on the led colors.

5 star rating  DIY Flashing LED Circuit Kit
C.A. from Kentucky, USA
We ordered 22 of these and used them in a Boy Scouts of America Electronics merit Badge class as the project. We were very pleased with them!

5 star rating  Flashing LED circuit kit
Undisclosed Verified Buyer
Prompt delivery. Easy to assemble and worked great.

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