12 MHz clk / 4 => 3 MBd UART time timeout 30 picocom -b 3000000 /dev/ttyUSB1 | pv > U.txt hexdump -C U.txt ## Raspberry PI When using RPI, the default UART (ttyS0/UART0) cannot reliably receive 3 Mbaud/s. Instead one must switch to UART1 / ttyAMA0, by using `dtoverlay=miniuart-bt`.