Home Page › Forums › Raspberry Pi Shields › Unable to use UART for AT commands.
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I’ve got a https://sixfab.com/product/quectel-ec25-mini-pcle-4glte-module/ together with a https://sixfab.com/product/raspberry-pi-3g-4glte-base-shield-v2/.
My problem is that I can not make the EC25 accept AT commands on the UART port i.e. the port that goes to serial I/O pins on the Raspberry Pi pin header. Operating through USB is OK though but I would prefer the UART.
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