xUmp.com Logo

COVID-19 INFO 9/27/2020: We are fully stocked, open & shipping orders daily. Order with confidence. Stay healthy & safe! Click here to shop for PPE
Back to Science
Save up to 75% OFF science learning materials
DIY Flashing LED Circuit Kit - Image One DIY Flashing LED Circuit Kit - Image two
Share this product:

DIY Flashing LED Circuit Kit

by xUmp.com   Item#: 16350   5 star rating 7 customer reviews
Price: $2.50 /each
$2.39 /each (buy 10+)
IN STOCK Ships next business day.
Add to cart to see shipping prices.


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 that you programmed yourself
  • 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 +
Box 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.

Customer Reviews

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.



Doodling Robot 4M Kit.

Doodling Robot 4M Kit

$19.99 $16.99

Balancing Bird.

Balancing Bird

$7.99 $4.99

Science-Sidebar: Science Education Articles

xUmp.com Logo

Join our tribe:
At xUmp.com, we are passionate about science. We believe in hands-on learning and making science fun. - Anton Skorucak, Physicist and Founder

At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.