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The build

How a Light Is Built

Student interns build every Flash Forward solar study light by hand in Bellevue, Washington, in four steps: solder the electronics, assemble the printed case, test every unit, then pack the lights for shipping to partner organizations. Each light uses $5.17 in parts, and the interns build them for free.

A student intern soldering the charge board and LEDs

Step 1

Solder the electronics

The TP4056 charge board, LiPo battery and the two 5 mm LEDs are soldered together. The board controls charging and protects the battery.

Screwing the light together

Step 2

Assemble the case

The 3D-printed case, 5 V solar panel lid and slide switch go together. The switch slides between off, charge and light.

Finished units on the bench, LEDs on

Step 3

Test every unit

Each finished light is switched on and checked. Only lights that pass go into the shipment.

Lights bubble-wrapped for shipping

Step 4

Pack and ship

Lights are bubble-wrapped and boxed for the trip to the partner organization, which places each light with a student.

Want to build lights as an intern?

Students in the Bellevue area help design, assemble and test the lights.

Join the team →