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[Solved] ESP32-CAM from Aliexpress - problem with programming and UART communication

bardabowski 1188 3
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  • Aliexpress ESP32-CAM may need different flashing setup

    #1 21446838
    bardabowski
    Level 4  
    Posts: 44
    Rate: 1
    I recently bought an ESP32 CAM module on Aliexpress, I have an ESP32 CAM MB dedicated programmer, with no problem the boards from Botland program, while with this one there is a problem. On the serial port it sends the phrase app task running, but the board does not connect, it cannot be programmed. A seller from Aliexpress sent me this link https://drive.google.com/drive/u/0/folders/1A...o?spm=a2g0s.imconversation.0.0.1a703e5fvfVZod
    Screenshot of an error during program upload to ESP32.
    Screen fragment with app task running... message.
    Nowe złączki do PCB od WAGO [sponsorowany]
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  • Helpful post
    #2 21447077
    inot
    Level 38  
    Posts: 3596
    Help: 445
    Rate: 812
    To program the ESP32-Cam, the IO0 pin must additionally be bridged to GND.
    Link .
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    IO0 must be grounded before boot for flashing

    #3 21447130
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14744
    Help: 659
    Rate: 12840
    More specifically, IO0 must be connected to ground during boot. If you turn on the ESP and it's already walking, then bridging IO0 to ground won't do anything. I usually:
    - I either bridge IO0 to ground before connecting it to the power supply
    - or I bridge IO0 to GND and then perform a reset by short-circuiting RESET to GND for a while

    Added after 41 [seconds]:

    By the way, here's the footage:
    ESP32-Cam, how to start and operate the camera with ESP32 in PlatformIO? .
    Helpful post? Buy me a coffee.
  • #4 21451057
    bardabowski
    Level 4  
    Posts: 44
    Rate: 1
    during programming, connect a jumper to IO0 GND
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