The drawbacks of the original Arduino platform were:
Meanwhile, a company named Espressif from Shenzhen, China, began making a series of low-cost microcontrollers with built-in WiFi. These were aimed at smart appliances (light bulbs, power switching, HVAC etc), and cost only a few dollars.
The Arduino movement quickly discovered these devices, and several groups began making Software Development Kits more friendly than Espressif’s own C-language SDK.
You can now programm the Espressif ESP range in