diff --git a/README.md b/README.md
index 8668249..de3d595 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,8 @@ https://randomnerdtutorials.com/raspberry-pi-pico-vs-code-micropython/
 
 
 ## install LT
+install primitives lib
+`$ mpremote mip install "github:peterhinch/micropython-async/v3/primitives"`
 
 install lib folder on device
 `$ mpremote connect /dev/ttyACM0 cp -r ./lib :`
diff --git a/lib/olt_lib/rx/__init__.py b/lib/olt_lib/ir_rx/__init__.py
similarity index 100%
rename from lib/olt_lib/rx/__init__.py
rename to lib/olt_lib/ir_rx/__init__.py
diff --git a/lib/olt_lib/rx/acquire.py b/lib/olt_lib/ir_rx/acquire.py
similarity index 100%
rename from lib/olt_lib/rx/acquire.py
rename to lib/olt_lib/ir_rx/acquire.py
diff --git a/lib/olt_lib/rx/print_error.py b/lib/olt_lib/ir_rx/print_error.py
similarity index 100%
rename from lib/olt_lib/rx/print_error.py
rename to lib/olt_lib/ir_rx/print_error.py
diff --git a/lib/olt_lib/rx/sony.py b/lib/olt_lib/ir_rx/sony.py
similarity index 100%
rename from lib/olt_lib/rx/sony.py
rename to lib/olt_lib/ir_rx/sony.py
diff --git a/lib/olt_lib/rx/test.py b/lib/olt_lib/ir_rx/test.py
similarity index 100%
rename from lib/olt_lib/rx/test.py
rename to lib/olt_lib/ir_rx/test.py
diff --git a/lib/olt_lib/tx/__init__.py b/lib/olt_lib/ir_tx/__init__.py
similarity index 100%
rename from lib/olt_lib/tx/__init__.py
rename to lib/olt_lib/ir_tx/__init__.py
diff --git a/lib/olt_lib/tx/sony.py b/lib/olt_lib/ir_tx/olt.py
similarity index 98%
rename from lib/olt_lib/tx/sony.py
rename to lib/olt_lib/ir_tx/olt.py
index 2734c17..116df5f 100644
--- a/lib/olt_lib/tx/sony.py
+++ b/lib/olt_lib/ir_tx/olt.py
@@ -5,7 +5,7 @@
 # Copyright Peter Hinch 2020 Released under the MIT license
 
 from micropython import const
-from ir_tx import IR
+from olt_lib.ir_tx import IR
 
 class SONY_ABC(IR):
 
diff --git a/lib/olt_lib/tx/rp2_rmt.py b/lib/olt_lib/ir_tx/rp2_rmt.py
similarity index 100%
rename from lib/olt_lib/tx/rp2_rmt.py
rename to lib/olt_lib/ir_tx/rp2_rmt.py
diff --git a/lib/olt_lib/tx/test.py b/lib/olt_lib/ir_tx/test.py
similarity index 85%
rename from lib/olt_lib/tx/test.py
rename to lib/olt_lib/ir_tx/test.py
index 244b98a..e17a0b1 100644
--- a/lib/olt_lib/tx/test.py
+++ b/lib/olt_lib/ir_tx/test.py
@@ -17,7 +17,7 @@ import uasyncio as asyncio
 from primitives.switch import Switch
 from primitives.delay_ms import Delay_ms
 # Import all implemented classes
-from ir_tx.sony import SONY_12, SONY_15, SONY_20, LT_24
+from olt_lib.ir_tx.olt import LT_24, SONY_12, SONY_15, SONY_20
 
 
 loop = asyncio.get_event_loop()
@@ -38,7 +38,7 @@ class Rbutton:
         self.tim = Delay_ms(self.repeat)
 
     def cfunc(self):  # Button push: send data
-        tog = 0 if self.proto < 3 else Rbutton.toggle  # NEC, sony 12, 15: toggle==0
+        tog = 0  # NEC, sony 12, 15: toggle==0
         self.irb.transmit(self.addr, self.data, tog, True)  # Test validation
         # Auto repeat. The Sony protocol specifies 45ms but this is tight.
         # In 20 bit mode a data burst can be upto 39ms long.
@@ -52,11 +52,8 @@ class Rbutton:
         await asyncio.sleep(0)  # Let timer stop before retriggering
         if not self.sw():  # Button is still pressed: retrigger
             self.tim.trigger(108)
-            if self.proto == 0:
-                self.irb.repeat()  # NEC special case: send REPEAT code
-            else:
-                tog = 0 if self.proto < 3 else Rbutton.toggle  # NEC, sony 12, 15: toggle==0
-                self.irb.transmit(self.addr, self.data, tog, True)  # Test validation
+            tog = 0  # NEC, sony 12, 15: toggle==0
+            self.irb.transmit(self.addr, self.data, tog, True)  # Test validation
 
 async def main(proto):
     # Test uses a 56KHz carrier.
@@ -66,7 +63,7 @@ async def main(proto):
         pin = Pin(17, Pin.OUT, value = 0)
     else:
         pin = Pin('X1')
-    classes = (SONY_12, SONY_15, SONY_20, LT_24)
+    classes = (LT_24, SONY_12, SONY_15, SONY_20)
     irb = classes[proto](pin, 56000)  # My decoder chip is 56KHz
     # Uncomment the following to print transmit timing
     irb.timeit = True
@@ -94,12 +91,10 @@ async def main(proto):
 # Greeting strings. Common:
 s = '''Test for IR transmitter. Run:
 from ir_tx.test import test
-test() for NEC protocol
+test() for LT-24 protocol
 test(1) for Sony SIRC 12 bit
 test(2) for Sony SIRC 15 bit
 test(3) for Sony SIRC 20 bit
-test(4) for Philips RC-5 protocol
-test(5) for Philips RC-6 mode 0.
 '''
 
 # Pyboard: