Synapse SNAP Stick 200, User Manual, Page: 5 / 7

1. About Your SNAP Stick USB Wireless Adapter
The SNAP Stick 200 USB device is used to enable a PC to communicate with local SNAP nodes.
This device, based on the ATMEL ATmega128RFA1 hardware, is a USB dongle, about the size of a thumb drive. It
is designed to act as a bridge between Synapse’s management tool, called Portal, or Synapse’s In ternet
connection capability, called SNAP Connect, and your other SNAP nodes.
Because it is based on the ATmega128RFA1, the SNAP Stick 200 has the same
capabilities as the underlying hardware, relating to sleep options and radio rates as
discussed in-depth in the SNAP Reference Manual.
The USB dongle form factor means that only one UART is available on the SNAP Stick 200. UART1 connects
through the USB port. If you change the default UART (NV Parameter 12) to 0, you will not be able to
communicate directly with the device, and will have to either need to use Portal to reset the device to Factory
Default Parameters (NV Params) or use a different SNAP Device as a bridge and reset the default UART over the
air.
Also because of the form factor, you do not have n ormal access to the GPIO pins on the SNAP Stick 200. The
device was designed to primarily act as a bridge device. The only feedback available from the device comes in
the form of a tri- color LED, controlled by pins 5 and 6, as shown in the following diagra m:
LED State Pin 5 Pin 6
Off High (True) High (True)
Red Low (False) High (True)
Green High (True) Low (False)
Amber Low (False) Low (False)
The SNAP Stick 200 includes an internal power amplifier. It also has a 32 kHz crystal, so for most efficient sleep
state, you should use sleep mode 1. Note that there is no way to trigger an external wakeup signal to the device,
so you should be careful to only use timed sleep.
SNAP Stick 200 1