when I run "ls -l /dev/ttyS0", this is what I get. Also, I have added username to group tty crwxrwxrwx 1 root tty 4, 64 May 5 00:30 /dev/ttyS0. but still, I am unable to read from the serial. Also, this is what I get when I try to read the active serial ports on pi $dmesg | grep tty [ 0.000000] Kern...

I had the PoE hat and thr micro hdmi connected to the pi and nothing else. Also the Pi4 doesnt boot up anymore without the PoE hat. A flashing red light indicates a low power situation. Agreed. The red LED should never flash, blink or dim. That LED is used as a power-good indicator, so when you see ...

Hi, I am using the loveRPi PoE hat from amazon which is not the official PoE Hat. Hi, The cable is 1 meter long. I am using the PoE on Ubiquiti switch which is connected to a dc converter. Also using a PoE hat to on the pi. What PoE Hat ? the Official PoE Hat ? https://www.raspberrypi.org/products/p...

Hi All, I have installed ubuntu on raspberry pi 4. I want pi to read data from the serial port. I am connecting the Tx, RX, GND pins from serial to Rx, Tx, GND respectively on the raspberry pi. But I am not able to read the data on ttyS0. Is it the right way to do it or do I have to make any other c...

Hi, The cable is 1 meter long. I am using the PoE on Ubiquiti switch which is connected to a dc converter. Also using a PoE hat to on the pi.

Hi All, I am using a PoE to power up my raspberry pi 4 from the Ubiquiti switch. When I connect the micro HDMI first and the PoE later, I see flashing green and red light on raspberry pi 4, and the pi won't boot up. If I connected the PoE first, and the micro HDMI later, the pi turned off and won't ...

Hi All,

I am trying to read data from a serial cable using a USB-to-RS-232 Serial Adapter Cable. But when I check for the device info using 'lsusb' the device info does not show up. I have installed ubuntu on the pi. Can someone help me out with it to read the data from the serial port? Thank you