####################################
# Stamp.com 5lb Scale USB interface
# Author: rfesler@o-l-m.com
# Language: Python v3.2
# Externals: pyUSB v1.0
# Version:
#       0.2 -
#       0.1 - Rough Code (25Sept11)
####################################

import usb.core
import usb.util
import sys

# find the sclae
dev = usb.core.find(idVendor=0x1446, idProduct=0x6A73)

# was it found?
if dev is None:
raise ValueError('Device not found')

# set the active configuration. With no arguments, the first
# configuration will be the active one
dev.set_configuration()

# Get data from USB Pipe 0x81
ret = dev.read(0x81,6)

# Byte 0 = Report ID (3 is the standard for scale data input reports)
# Byte 1 = Scale Status
# 		1 = Fault
#		2 = Stable at Zero
#		3 = In Motion
#		4 = Stable
#		5 = Under Zero
#		6 = Over Weight
#		7 = Requires Calibration
#		8 = Requires Re-zeroing
# Byte 2 = Weight Unit
#		11 = ounces
#		12 = pounds
# Byte 3 = Data Scaling (This is the exponent that you raise 10 by to get the decimal)
# Byte 4 = Weight LSB
# Byte 5 = Weight MSB

print (ret)