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Arduino: 1.8.16 (Windows Store 1.8.51.0) (Windows 10), Board: "Adafruit Circuit Playground Express"

Sketch uses 13152 bytes (5%) of program storage space. Maximum is 262144 bytes.

Global variables use 2000 bytes (6%) of dynamic memory, leaving 30768 bytes for local variables. Maximum is 32768 bytes.

Forcing reset using 1200bps open/close on port COM17

PORTS {COM17, } / {} => {}

PORTS {} / {COM18, } => {COM18, }

Found upload port: COM18

C:\Users\Owner\Documents\ArduinoData\packages\arduino\tools\bossac\1.7.0-arduino3/bossac.exe -i -d --port=COM18 -U true -i -e -w -v C:\Users\Owner\AppData\Local\Temp\arduino_build_884582/inclass_debug.ino.bin -R 

No device found on COM18

Set binary mode
Send auto-baud
Set binary mode
An error occurred while uploading the sketch

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6
  • Is COM18 really the Arduinos COM port?
    – chrisl
    Oct 12 at 18:16
  • 1
    try a double reset, the LED should pulsate, then select the port in Tools menu and Upload
    – Juraj
    Oct 12 at 18:55
  • 1
    Why does it reset COM17 but then thinks it finds something on COM18?! Is there some auto-detection active?
    – PMF
    Oct 12 at 20:02
  • @PMF if you have a question about the upload process, then post your own question ... this site is not a forum
    – jsotola
    Oct 12 at 22:03
  • @jstola Sorry for being a bit inconclusive, but this wasn't meant as a question. The Board only has one USB port, so the fact that the programmer tries to use two is possibly part of the problem.
    – PMF
    Oct 13 at 5:08

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