I pulled one of my DIY Basic kits out of the cupboard and powered it on. It connected to my Wifi hotspot but I needed to join a different hot spot. I tried factory resetting but it wouldn’t work so decided to flash the firmware following the instructions here The AirGradient DIY Air Quality Sensor (Basic Version PCB Version < 3.0)
I loaded the DIY_BASIC sketch into the arduino software and pushed it to the basic, it appeared to work however there were a couply of warnings.
The OLED display is showing quality data and when powering on it says:
Connect Wifi AG-
Warm Up Serial #
Any suggestions about what I could be doing wrong and how to fix?
I installed version 2.4.7 of the AG arduino package, I might try and older one.
\Arduino\libraries\AirGradient_Air_Quality_Sensor\AirGradient.cpp: In member function 'TMP_RH AirGradient::returnError(TMP_RH_ErrorCode)': Arduino\libraries\AirGradient_Air_Quality_Sensor\AirGradient.cpp:684:14: warning: converting to non-pointer type 'float' from NULL [-Wconversion-null] 684 | result.t = NULL; | ^~~~ \Arduino\libraries\AirGradient_Air_Quality_Sensor\AirGradient.cpp:685:15: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null] 685 | result.rh = NULL; | ^~~~ . Variables and constants in RAM (global, static), used 31844 / 80192 bytes (39%) ║ SEGMENT BYTES DESCRIPTION ╠══ DATA 1512 initialized variables ╠══ RODATA 3236 constants ╚══ BSS 27096 zeroed variables . Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 62667 / 65536 bytes (95%) ║ SEGMENT BYTES DESCRIPTION ╠══ ICACHE 32768 reserved space for flash instruction cache ╚══ IRAM 29899 code in IRAM . Code in flash (default, ICACHE_FLASH_ATTR), used 348152 / 1048576 bytes (33%) ║ SEGMENT BYTES DESCRIPTION ╚══ IROM 348152 code in flash esptool.py v3.0 Serial port COM4 Connecting.... Chip is ESP8266EX Features: WiFi Crystal is 26MHz MAC: a8:48:fa:dd:2c:51 Uploading stub... Running stub... Stub running... Changing baud rate to 460800 Changed. Configuring flash size... Auto-detected Flash size: 4MB Compressed 386944 bytes to 274754... Writing at 0x00000000... (5 %) Writing at 0x00004000... (11 %) Writing at 0x00008000... (17 %) Writing at 0x0000c000... (23 %) Writing at 0x00010000... (29 %) Writing at 0x00014000... (35 %) Writing at 0x00018000... (41 %) Writing at 0x0001c000... (47 %) Writing at 0x00020000... (52 %) Writing at 0x00024000... (58 %) Writing at 0x00028000... (64 %) Writing at 0x0002c000... (70 %) Writing at 0x00030000... (76 %) Writing at 0x00034000... (82 %) Writing at 0x00038000... (88 %) Writing at 0x0003c000... (94 %) Writing at 0x00040000... (100 %) Wrote 386944 bytes (274754 compressed) at 0x00000000 in 6.4 seconds (effective 484.7 kbit/s)... Hash of data verified. Leaving... Hard resetting via RTS pin...