khoih-prog
Senior Member

Just be sure to use external 3.3V supply for AT-shield. 3.3V from T4.0 can't supply enough power to the shield. Just testing now and OK Starting AdvancedWebServer on TEENSY 4.0 with ESP32-AT &...

Sorry, please go back to use v1.6.0 The new versions v1.7.0 and v1.7.1 will be removed or fixed. Starting HelloServer on TEENSY 4.0 with ESP32-AT & ESP8266_AT_WebServer Library ESP8266_AT_WebServer v1.6.0 ...