12
2.8
Powering the USB dongle
The BC660 module can be powered through USB or through external battery power source. To power it
through USB, connect PIN 1 and PIN 2 (and disconnect PIN 2 and PIN 3) on the USB/BATT power jumper
then plug the USB dongle into a USB port on a PC. The USB port provides power to the USB dongle and
BC660 module.
If the BC660 module is to be powered from external battery power source, then connect PIN 2 and PIN 3
(and disconnect PIN 1 and PIN 2) on the USB/BATT power jumper. No need to plug the USB dongle into
USB port on PC since the power is provided through the external battery power source.
Figure 7. USB/BATT jumper
2.9
Connecting UART to the USB Dongle
You interface with the USB dongle through UART interface. The UART (TXD/RXD) can be connected to any
external device with UART (Tx/Rx) interface such as an Arduino board or any other hardware board
available.
You connect the USB dongle through
TXD
and
RXD
, to a USB port in the computer through a USB-to-
UART cable. You can use cable such as this one:
USB TO UART TTL (Wires) Serial Cable (PL2303HX) MCP00102W Programmer Arduino Compatible in
Such a cable has multiple colored wired, and you connect them to pins on USB dongle as follows:
White
:
TXD
Green
:
RXD
