Hello BSTRobin, Thank you for helping me No, I can't run the BSEC 2 with Arduino, the original BSEC2 library from Bosch was not accepted by Arduino IDE, after adding the extra_script, and library files from the 1.6 BSEC1 it been accepted by Arduino IDE, but I get the following error message "Library BSEC_Software_Library has been declared precompiled: Using precompiled library in C:\Users\Al-Okby\Documents\Arduino\libraries\BSEC_Software_Library\src\esp8266 c:/users/al-okby/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.4-gcc10.3-1757bed/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\Al-Okby\AppData\Local\Temp\arduino_build_808491/basic_config_state.ino.elf section `.text1' will not fit in region `iram1_0_seg' collect2.exe: error: ld returned 1 exit status exit status 1 Error compiling for board NodeMCU 1.0 (ESP-12E Module)." I don't know if I did the correct process to add BSEC2 to Arduino IDE, or my µC (WeMos D1 Mini) is not compatible with BSEC2 and only can run BSEC1
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