Use minicom to connect Raspberry PI

1. Prepare
a. A USB to TTL Serial
b. Install minicom

sudo apt-get install minicom

2. Connect
a. connect TTL to GPIO like below



b. find the port on your PC

ls -l /dev/ttyUSB0

the output will like "crw-rw---- 1 root dialout...", means it's character device


sudo minicom -b 115200 -o -D /dev/ttyUSB0

Then you'll coneect to RPI !