Errors

Previous page: Installing firmware - Next page: Assembly of components (circuit)

Known errors

Allow non-root access to /ttyUSB0

```error: espcomm_open failed error: espcomm_upload_mem failed ```

Arduino: 1.8.5 (Linux), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, 4M (1M SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200"

WARNING: library LiquidCrystal_I2C-1.1.3 claims to run on (avr) architecture(s) and may be incompatible with your current board which runs on (esp8266) architecture(s).
Archiving built core (caching) in: /tmp/arduino_cache_52205/core/core_esp8266_esp8266_nodemcuv2_CpuFrequency_80,FlashSize_4M1M,LwIPVariant_v2mss536,Debug_Disabled,DebugLevel_None____,FlashErase_none,UploadSpeed_115200_49a63275dcb6d85bab0a217d1fca3b9a.a
Sketch uses 497604 bytes (47%) of program storage space. Maximum is 1044464 bytes.
Global variables use 41480 bytes (50%) of dynamic memory, leaving 40440 bytes for local variables. Maximum is 81920 bytes.
An error occurred while uploading the sketch
error: cannot access /dev/ttyUSB0

error: espcomm_open failed
error: espcomm_upload_mem failed

Suggested Solution
⬆ Back to top

`Exception (28):`

Exception (28):

epc1=0x4022749a epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000
ctx: cont  
sp: 3fff34c0 end: 3fff3810 offset: 01a0

Suggested Solution
⬆ Back to top