the ESP32 chip and antenna. From the look of things, Gravitech and Maker Asia took Espressif’s demonstration board and module apart and reconstructed it on a single PCB. This means that they ...

WiFi or other wireless communication chip. On modules like for the ESP8266 and ESP32 platforms the PCB antennas are often integrated onto the module’s PCB, yet even with such a ready-made module ...

The bluetooth chip is called ESP32 and is manufactured by the China-based company Espressif. According to researchers, the ESP32 is "a microcontroller that enables WiFi and Bluetooth connection." ...