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I have the SIM800 GSM addon hat for a Raspberry Pi 3 and got it to work with T-Mobile amazon link Using this website as a reference: https://www.rhydolabz.com/wiki/?p=16325 I followed these steps: sudo apt-get update sudo apt-get install ppp screen elinks sudo -i nano /etc/ppp/peers/rnet Add the following to the file #t-mobile is the apn connect "/usr/...


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According to RPi 4 overlays readme you have to turn off Bluetooth to use UART0. You should test alternative UART pins. Name: disable-bt Info: Disable onboard Bluetooth on Pi 3B, 3B+, 3A+, 4B and Zero W, restoring UART0/ttyAMA0 over GPIOs 14 & 15. N.B. To disable the systemd service that initialises the modem so it doesn't use the UART, ...


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I'm using SC16IS752 IC which is SPI to 2xUART converter. It works well with Raspbian Stretch. It is a bit more expensive than FTDI chip, but there are two uarts and I don't have to use precious USB port.


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Question How can Rpi4B python UART talk to XY PWM Signal Generators? Answer Contents (1) Introducing XY-LPWM, UART support version of XY-PWM (2) Using Win10 RealTerm terminal emulator to serial/UART talk to XY-LPWM (3) Using Rpi python program to serial/UART talk to XY-LPWM (2) Using Win10 RealTerm terminal emulator to serial/UART talk ...


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