Serielle Konsole antwortet nicht

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Hallo zusammen,
heute habe ich meinen Strompi3 in Betrieb genommen mit einem neuen RasPi4:
uname -a
Linux raspberrypi 4.19.97-v7l+ #1294 SMP Thu Jan 30 13:21:14 GMT 2020 armv7l GNU/Linux
cat /etc/issue
Raspbian GNU/Linux 10 \n \l
sudo apt install python-serial python3-serial minicom python-dev python3-rpi.gpio
/boot/config.txt ergänzt:
dtoverlay=pi3-miniuart-bt
enable_uart=1
core_freq=250
sudo raspi-config
-> Interface Options -> Serial
Would you like a login shell to be accessible over serial? -> No
Would you like the serial port hardware to be enabled? -> Yes
reboot
sudo minicom -D /dev/serial0 -b 38400
Welcome to minicom 2.7.1
OPTIONS: I18n
Compiled on Aug 13 2017, 15:25:34.
Port /dev/serial0, 11:58:00
Press CTRL-A Z for help on special keys
Nach Eingabe von startstrompiconsole oder sspc passiert nichts.
stty -F /dev/serial0
speed 38400 baud; line = 0;
min = 1; time = 5;
ignbrk -brkint -icrnl -imaxbel
-opost -onlcr
-isig -icanon -iexten -echo -echoe -echok -echoctl -echoke

Was habe ich übersehen?
Danke und Gruß,
Franz

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Hi Joe8,
thanks for the information. We know that undervoltage, in general, can affect the Raspberry Pi. But we didn’t now that a light undervoltage could cause problems with serial communication. Thank you again. We will investigate this.
Best regards
Nils (Joy-IT)

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