1. Start here
    1. Welcome
    2. Specifications
    3. General background info about SW/HW
    4. Assemble the HW
    5. Install SW
    1. Campaigns
      1. Funded: Crowd Supply PC 1
      2. Upcoming Crowd Supply PC 2
    2. Use it
      1. Success stories
      2. Get support
    3. Sponsoring
      1. Become a sponsor
    4. Contribute
      1. Build Firmware
      2. contributing code
      3. images .. documentation

USB to UART connection

GnuBee USB to UART

Most embedded System-on-chips come with an UART or TTL integrated into the System-on-chip to allow debugging, firmware replacement or serial connection.

The GnuBee Personal Cloud routes the UART connection to a 3.5mm (1/8”) Audio Jack for convenient use.

The GnuBee USB to UART uses a Winchiphead CH340G USB to serial chip from Nanjing QinHeng Electronics Co.,Ltd. to convert the UART signal to USB.

The Linux kernel identifies this chipset as the “QinHeng Electronics HL-340 USB-Serial adapter”

Users of other Operating Systems can find drivers in the drivers directory.

UART and TFTP

Common methods to change firmware in case of any problems.

Larry uses GNU Screen AND tftpd-hpa and starts it calling

screen /dev/ttyUSB0 57600

Niklaus uses minicom and starts it by calling

minicom -b 57600 -D /dev/ttyUSB0

Windows users can download an install PuTTY AND TFTP32)

Baud Rate: 57600 / Data Bits: 8 / Parity Control: NO / Stop Bits: 1 / Handshake: NO