diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cc744ca
--- /dev/null
+++ b/README.md
@@ -0,0 +1,29 @@
+# gamo
+
+local gamepad tester
+
+original TUI app here: [https://git.pixelatedw.xyz/wynd/gamo](https://git.pixelatedw.xyz/wynd/gamo)
+
+## why ?
+
+there's nothing particularly fancy about this and it does what it says, allows the user to test their gamepad
+
+made with godot because I couldn't be bothered with any GUI toolkits out there
+it uses a custom exporting template to cut down its size by more than half
+
+compared with the original TUI version it is huge coming at around 32MB (about 17 times more) and it consumes about 26 times more RAM (~130MB)
+however it comes with a bunch of benefits such as a much nicer layout, button images, transparency and an overall (very subjecitve) nicer UX/DX
+
+## controls
+
+- `v` to start a rumble test (weak default)
+- `shift` toggle between rumble modes (weak/strong)
+
+## config
+
+this app comes with a config found in:
+- Linux: `~/.local/share/gamo/config.cfg`
+
+## credits
+
+icons are from kenney's input prompt collection: [https://www.kenney.nl/assets/input-prompts](https://www.kenney.nl/assets/input-prompts)
diff --git a/controller/controller.gd b/controller/controller.gd
index 3c2eb07..5eaf1d2 100644
--- a/controller/controller.gd
+++ b/controller/controller.gd
@@ -3,6 +3,7 @@ extends Control
 @onready var device_name: RichTextLabel = $Device
 
 var _has_joy := false
+var _weak_rumble := true
 
 func _ready() -> void:
 	if Input.get_connected_joypads().size() > 0:
@@ -18,3 +19,9 @@ func _process(_delta: float) -> void:
 		if Input.get_connected_joypads().size() <= 0:
 			self.device_name.text = WyHelper.NO_DEVICE
 			self._has_joy = false
+
+func _input(event: InputEvent) -> void:
+	if event.is_action_pressed("toggle_rumble_mode"):
+		self._weak_rumble = !self._weak_rumble
+	elif event.is_action_pressed("rumble_test"):
+		Input.start_joy_vibration(0, 1.0 if self._weak_rumble else 0.0, 1.0 if !self._weak_rumble else 0.0, 1)
diff --git a/project.godot b/project.godot
index 3f4aa36..e57c7c6 100644
--- a/project.godot
+++ b/project.godot
@@ -116,6 +116,16 @@ l1={
 "events": [Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"button_index":9,"pressure":0.0,"pressed":false,"script":null)
 ]
 }
+rumble_test={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":86,"physical_keycode":0,"key_label":0,"unicode":118,"location":0,"echo":false,"script":null)
+]
+}
+toggle_rumble_mode={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194325,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
 
 [rendering]