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.

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.

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.

Step 3
Test every unit
Each finished light is switched on and checked. Only lights that pass go into the shipment.

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 →