Elecrow online store: Retail & Wholesale thousands of Electronic modules with tutorial for future engineers and maker. Turnkey solution from parts sourcing, PCB fabrication, PCB assembly etc. for engineers and companies from prototyping to batch manufacture.
Most of Elecrow electronic modules are open sourced, include Arduino mainboard, Arduino starter kit with guide and Arduino related modules, Raspberry pi & Raspberry pi related accessories. Robotic, 3D printer, IOT(internet of things) modules, sensor, components, Tools for makers and some great products designed by engineers worldwide etc.
Elecrow also build sponsorship with a lot of future engineers. you can cooperate with Elecrow with a lot of method.