After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.

There are already many cheap ESP32 drones on AliExpress, or you can even make an ESP32 DIY drone for about $12, but ...

BREVARD COUNTY, Fla. — If you see a large drone flying over parts of the Space Coast, don't worry, it's nothing to be concerned about. The work comes amid a statewide malaria warning; several ...