Common Emitter

This is cheapest, plastic digital caliper, costing ~$3. LR44 cell probably would be not included, so be prepared. These cells are also dirt ...

Cheap, sub-$50 miniature drone with 720p camera. Controller, two batteries, two USB chargers, spare blades, blade protectors, small screwdri...

Cheap ($5) aluminum LED flashlight powered by 18650 LiIon cell. Marked as model 910. Switch with rubber dome is on the bottom. There are two...