diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..2a27a40
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,16 @@
+# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
+
+[[package]]
+name = "docopt"
+version = "0.6.2"
+description = "Pythonic argument parser, that will make you smile"
+optional = false
+python-versions = "*"
+files = [
+    {file = "docopt-0.6.2.tar.gz", hash = "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"},
+]
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.11"
+content-hash = "020d3e03335e70ca8b1cfd769838e50546a63b9ed4e4034ba584fd3a3ec497fd"
diff --git a/pulses/methods.py b/pulses/methods.py
index b08f23a..d3bfb55 100644
--- a/pulses/methods.py
+++ b/pulses/methods.py
@@ -54,9 +54,21 @@ def value_linear(obj, step):
         return delta * (100-step)/50 + obj.min
 
 
+def value_vshape(obj, step):
+    """
+    V-shape value, 1-0-1
+    """
+
+    delta = obj.max - obj.min
+    if step < 50:
+        return delta * (100-step)/50 + obj.min
+    else:
+        return delta*step/50 + obj.min
+
+
 def value_sin(obj, step):
     """
-    Sinusoidal values, 0-1-0 /\
+    Sinusoidal values, 0-1-0
     """
 
     delta = obj.max - obj.min
@@ -66,7 +78,7 @@ def value_sin(obj, step):
 
 def value_cos(obj, step):
     """
-    Absolute Cosinusoidal values, 1-0-1 \\//
+    Absolute Cosinusoidal values, 1-0-1
     """
 
     delta = obj.max - obj.min
diff --git a/pulses/pulses.py b/pulses/pulses.py
index 399bf01..7d08ba4 100644
--- a/pulses/pulses.py
+++ b/pulses/pulses.py
@@ -10,7 +10,7 @@ from .methods import *  # NOQA
 class ledPulse(threading.Thread):
 
     delayMethods = ['constant', 'sin', 'cos']
-    valueMethods = ['on', 'off', 'linear', 'sin', 'cos']
+    valueMethods = ['on', 'off', 'linear', 'vshape', 'sin', 'cos']
     methods = {'delay': {}, 'value': {}}
 
     defaultSet = {
@@ -69,7 +69,7 @@ class ledPulse(threading.Thread):
         self.model = sys.platform
         try:
             with open('/sys/firmware/devicetree/base/model', 'r') as m:
-                model = m.read()
+                model = m.read().strip()
                 if model.lower().startswith('raspberry pi'):
                     self.supported = True
                     self.model = model
diff --git a/pyproject.toml b/pyproject.toml
index 9a05d02..51fbd0e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,15 @@
-[build-system]
-requires = ["setuptools", "wheel"]
-build-backend = "setuptools.build_meta"
+[tool.poetry]
+name = "pulses"
+version = "0.90"
+description = "Pulse LEDs on RPi"
+authors = ["Andrea Mistrali <andrea@mistrali.pw>"]
+readme = "README.md"
 
-[tool.pyright]
-reportMissingImports = "information"
+[tool.poetry.dependencies]
+python = "^3.11"
+docopt = "^0.6.2"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"