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The default serial port on the Pi is presented on the GPIO pins BCM 14 and 15 not over usb. To create a serial port over USB you have to: Set up the Pi operating system first on the SD card When booted enable serial gadget mode on the Pi Reboot the Pi To enable gadget mode issue the following from the Pi command line: echo dtoverlay=dwc2 | sudo tee -a /...


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I had a similar issue and had troubleshooted a few things. It turned out the small connection between the camera lens and the camera board had come loose. Pushing it in tightly fixed it.


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"The output I receive is serial test start ... What am I doing wrong?" You should use /dev/serial0 There seems to be nothing wrong with the program, it is probably doing what you instructed it to do i.e. Send a line; then read input and resend the characters over serial, presumably producing an infinite loop. What do you expect it to do? ...


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Try reconnecting serial device to find exact port. Refer https://www.instructables.com/Raspberry-Pi-Arduino-Serial-Communication/


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Use /dev/serial0 (rather than /dev/ttyS0).


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I just tried berryboot-20181211-pi0-pi1-pi2-pi3.zip and it seems to work fine except for its missing a few things. I can only install NOC-PS Lite from the internet and nothing else.


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This has all the symptoms of a faulty SD Card (assuming it isn't counterfeit). If you use the SD Association formatter you may be able to use the card (I have had some success this way) but ultimately problems will recur because the underlying NAND is failing.


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After updating media, renaming directories containing mp3 files followed by force-reload solves problem.


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I disabled bluetooth completely and turned off the wifi when recording sound. Much better sound quality.


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Regarding the problem with the BME280...don’t replace cmdstring[i] = val with cmdstring[i] = str(val) but with cmdstring[i] = chr(val) That worked for me.


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I found the issue is around the 5v. You can use the 5V from the board to power the LED however the PI still runs at 3.3V logic levels which can lead to odd things happening. I think this explained it well. https://learn.adafruit.com/neopixel-levelshifter Some microcontrollers, such as the Arduino Uno and Adafruit Metro 32u4, run at 5V logic levels, and so ...


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