Simple Python script to be called from Unified Remote with a particular remote code name as an extra named Args. The script receives the remote code name (string), looks the name up in the 'codes' dict to determine the binary data to send, and finally sends the binary data to the Arduino over USB.

rcvFromUnifiedRemote.py

#!python.exe
'''This script receives the remote code name (string), looks the name up in the 'codes' dict to determine the binary data to send, and finally sends the binary data to the Arduino over USB.'''
import site
import d2xx as usb
import struct
import binascii
import time
import sys
import re

pPredata = re.compile(r'pre_data.*(0x[0-9]+)\n')
pCodes = re.compile(r'\s([A-Z|_|\+|\-]+).*0x([0-9a-fA-F]+)')
preVal = ""
codes = {}
config = 'c:\irRemote\lircd.conf'

def parse(conf):
  '''Parses the lircd config and stores the data in the codes global dict'''
    global codes
    global preVal
	
    preVal = pPredata.findall(conf)[0]
    bc = re.search('begin codes\n', conf)
    ec = re.search('end codes', conf)
    codeRegion = conf[bc.end():ec.start()]
    codeMatches = pCodes.findall(codeRegion)
    for match in codeMatches:
        codeName, codeVal = match
        codes[codeName] = preVal + codeVal

def sendIrPacket(h, data):
	print "data = " + str(data)
	try:
		k = struct.pack('<Q', long(data,16))
		h.write(k)
	except Exception as e:
		print "exception occurred: " + e.strerror

def setup():
	f = open(config, 'r')
	conf = f.read()
	f.close()
	parse(conf)
	h = usb.open(0)
	h.setBaudRate(9600)
	return h

def main():
	try:
		h = setup()
		code = codes[sys.argv[1]]
		if code.startswith('0x'):
			sendIrPacket(h, code)
	finally:
		pass

if __name__ == "__main__":
	main()