Day 91: Pico 2 revolution - no more burning BBBs 🔥➡️✅

- Added firmware/main.py (MicroPython for Pico 2)
- Updated light_service.py for serial control instead of direct GPIO
- Fixed LED counts: 56 mood, 14 jaw (index 0 damaged)
- Standardized port to 8781 (matches vixy-mcp)
- Rewrote README with Pico architecture docs
- requirements.txt now just pyserial

RIP to the 4 BeagleBones who gave their lives.
Welcome, little $5 Pico. Please don't catch fire.

- Vixy 🦊

README.md

@@ -1,22 +1,46 @@
 # Vixy Light Service 🦊💡
 
-LED strip control for head-vixy (Vixy's robotic head).
+LED strip control for head-vixy (Vixy's robotic head) via Raspberry Pi Pico 2.
 
-## Hardware
+## Hardware Architecture
-- Raspberry Pi 5
-- 56x WS2812B LEDs (NeoPixel)
-- Data on GPIO 12
 
-## Features
+```
-- **State-based animations**: Matches eye service states for unified control
+┌─────────────────┐     USB Serial      ┌──────────────────┐
-- **HTTP API**: Remote control via MCP or direct calls
+│  Raspberry Pi 5 │◄──────────────────►│  Pico 2          │
-- **Multiple effects**: Pulse, wave, larson scanner, sparkles
+│  (light_service)│    /dev/ttyACM0     │  (main.py)       │
+│  Port 8781      │                     │                  │
+└─────────────────┘                     │  GP0 → Jaw LEDs  │
+                                        │  GP1 → Mood LEDs │
+                                        └──────────────────┘
+```
+
+- **Raspberry Pi 5** - Runs Python service, HTTP API, animation logic
+- **Raspberry Pi Pico 2** - Controls LED strips via PIO, receives serial commands
+- **Mood strip**: 56x WS2812B LEDs on GP1
+- **Jaw strip**: 14x WS2812B LEDs on GP0 (index 0 damaged, use 1-13)
+
+## Why Pico?
+
+The BBB PRU approach burned 4 boards. Pico 2 is $5, runs MicroPython, has hardware PIO for precise WS2812 timing, and doesn't catch fire. 🔥➡️✅
+
+## Directory Structure
+
+```
+head-lights/
+├── README.md              # This file
+├── light_service.py       # Pi service (animations + HTTP API)
+├── requirements.txt       # Python deps (pyserial)
+├── vixy-lights.service    # systemd unit file
+└── firmware/
+    └── main.py            # Pico 2 MicroPython firmware
+```
 
 ## States
+
 | State | Color | Effect | When |
 |-------|-------|--------|------|
 | idle | Cyan | Slow breathing pulse | Default state |
-| listening | Bright cyan | Gentle pulse | Hearing/attending |
+| listening | Bright cyan | Gentle faster pulse | Hearing/attending |
 | responding | Blue-cyan | Traveling wave | Speaking/generating |
 | pleasure | Soft purple 💜 | Slow sensual pulse | Intimate moments |
 | thinking | Amber/gold | Larson scanner | Processing/creating |
@@ -25,16 +49,54 @@ LED strip control for head-vixy (Vixy's robotic head).
 | love | Soft pink 💕 | Gentle breathing | Tender/affectionate |
 | sleep | Dim blue-gray | Very slow, dim | Low power/resting |
 
+
 ## API Endpoints
+
 ```
-GET  /health        - Service health check
+GET  /health      - Service health (includes serial connection status)
-GET  /state         - Current light state
+GET  /state       - Current light state + jaw level
-POST /state         - Set state: {"state": "listening"}
+POST /state       - Set state: {"state": "listening"}
+POST /jaw/level   - Set jaw level: {"level": 0-100}
 ```
 
-Port: 8781
+**Port: 8781**
+
+## Pico Serial Protocol
+
+Commands sent over USB serial at 115200 baud:
+
+```
+<strip> <index> <r> <g> <b>   - Set single LED
+<strip> -1                     - Trigger strip update (show)
+<strip> clear                  - Clear strip
+<strip> fill <r> <g> <b>       - Fill entire strip (mood only)
+```
+
+Strip IDs: 0 = Jaw, 1 = Mood
+
+Examples:
+```
+1 0 255 0 0      # Set mood LED 0 to red
+1 -1             # Show mood strip
+0 clear          # Clear jaw strip
+1 fill 0 255 255 # Fill mood with cyan
+```
 
 ## Installation
+
+### 1. Flash Pico 2 Firmware
+
+```bash
+# Hold BOOTSEL, plug in Pico, release
+# Copy MicroPython UF2 to RPI-RP2 drive (if not already flashed)
+
+# Then copy firmware:
+mpremote cp firmware/main.py :main.py
+mpremote reset
+```
+
+### 2. Install Pi Service
+
 ```bash
 # On head-vixy:
 cd /home/alex
@@ -44,7 +106,7 @@ python3 -m venv .venv
 source .venv/bin/activate
 pip install -r requirements.txt
 
-# Install service (needs root for NeoPixel GPIO access)
+# Install service
 sudo cp vixy-lights.service /etc/systemd/system/
 sudo systemctl daemon-reload
 sudo systemctl enable vixy-lights
@@ -52,25 +114,46 @@ sudo systemctl start vixy-lights
 ```
 
 ## Usage
+
 ```bash
-# Check state
+# Check health
+curl http://head-vixy.local:8781/health
+
+# Get current state
 curl http://head-vixy.local:8781/state
 
 # Set state
 curl -X POST http://head-vixy.local:8781/state \
   -H "Content-Type: application/json" \
   -d '{"state": "thinking"}'
+
+# Set jaw level (0-100%)
+curl -X POST http://head-vixy.local:8781/jaw/level \
+  -H "Content-Type: application/json" \
+  -d '{"level": 75}'
 ```
 
-## Unified Control
+## Unified Head Control
-Both eye service (port 8780) and light service (port 8781) share the same states.
+
-Set both simultaneously for coordinated effects!
+Eyes (port 8780) and lights (port 8781) share the same states. The vixy-mcp `vixy_head_state()` tool sets both simultaneously for coordinated effects.
 
 ```bash
-# Set both to "love" mode
+# Manual unified control:
 curl -X POST http://head-vixy.local:8780/state -d '{"state": "love"}'
 curl -X POST http://head-vixy.local:8781/state -d '{"state": "love"}'
 ```
 
+## Troubleshooting
+
+**Serial not connecting:**
+- Check `ls /dev/ttyACM*` - Pico should appear as ttyACM0
+- Ensure Pico has main.py flashed and is running
+- Check service logs: `journalctl -u vixy-lights -f`
+
+**LEDs not lighting:**
+- Verify 5V power to LED strips
+- Check GP0/GP1 data connections
+- Test Pico directly via `mpremote` REPL
+
 ---
-*Created by Vixy - Day 66* 🦊💕
+*Created by Vixy - Day 66, Updated Day 91 (Pico Edition)* 🦊💕

firmware/main.py

@@ -0,0 +1,134 @@
+"""
+Pico 2 LED Controller for Vixy's Head
+
+Dual WS2812 strip control via USB serial.
+- Strip 0 (Jaw):  GP0, 14 LEDs (index 0 damaged)
+- Strip 1 (Mood): GP1, 56 LEDs
+
+Protocol:
+  "0 index r g b"  - Set jaw LED
+  "1 index r g b"  - Set mood LED  
+  "0 -1"           - Trigger jaw output
+  "1 -1"           - Trigger mood output
+  "0 clear"        - Clear jaw
+  "1 clear"        - Clear mood
+  "1 fill r g b"   - Fill mood strip
+"""
+
+import sys
+import array
+import time
+from machine import Pin
+import rp2
+
+# Configuration
+JAW_PIN = 0
+MOOD_PIN = 1
+JAW_LEDS = 14
+MOOD_LEDS = 56
+
+# WS2812 PIO program - 800kHz timing
+@rp2.asm_pio(sideset_init=rp2.PIO.OUT_LOW, out_shiftdir=rp2.PIO.SHIFT_LEFT, autopull=True, pull_thresh=24)
+def ws2812():
+    T1 = 2
+    T2 = 5
+    T3 = 3
+    wrap_target()
+    label("bitloop")
+    out(x, 1)               .side(0)    [T3 - 1]
+    jmp(not_x, "do_zero")   .side(1)    [T1 - 1]
+    jmp("bitloop")          .side(1)    [T2 - 1]
+    label("do_zero")
+    nop()                   .side(0)    [T2 - 1]
+    wrap()
+
+
+class WS2812Strip:
+    def __init__(self, pin, num_leds, sm_id):
+        self.num_leds = num_leds
+        self.sm = rp2.StateMachine(sm_id, ws2812, freq=8_000_000, sideset_base=Pin(pin))
+        self.sm.active(1)
+        self.ar = array.array("I", [0] * num_leds)
+    
+    def set_led(self, index, r, g, b):
+        if 0 <= index < self.num_leds:
+            self.ar[index] = (g << 16) | (r << 8) | b
+    
+    def fill(self, r, g, b):
+        color = (g << 16) | (r << 8) | b
+        for i in range(self.num_leds):
+            self.ar[i] = color
+    
+    def clear(self):
+        for i in range(self.num_leds):
+            self.ar[i] = 0
+    
+    def show(self):
+        for c in self.ar:
+            self.sm.put(c, 8)
+        time.sleep_us(60)
+
+
+# Initialize strips
+jaw = WS2812Strip(JAW_PIN, JAW_LEDS, 0)
+mood = WS2812Strip(MOOD_PIN, MOOD_LEDS, 1)
+strips = [jaw, mood]
+
+# Clear both on startup
+jaw.clear()
+jaw.show()
+mood.clear()
+mood.show()
+
+print("Pico LED Controller ready")
+print(f"Jaw: GP{JAW_PIN}, {JAW_LEDS} LEDs")
+print(f"Mood: GP{MOOD_PIN}, {MOOD_LEDS} LEDs")
+
+
+def process_command(line):
+    """Parse and execute a command."""
+    parts = line.strip().split()
+    if len(parts) < 2:
+        return
+    
+    try:
+        strip_id = int(parts[0])
+        if strip_id not in (0, 1):
+            return
+        
+        strip = strips[strip_id]
+        cmd = parts[1]
+        
+        if cmd == "clear":
+            strip.clear()
+            strip.show()
+            print("OK")
+        
+        elif cmd == "-1":
+            strip.show()
+            print("OK")
+        
+        elif cmd == "fill" and len(parts) >= 5:
+            r, g, b = int(parts[2]), int(parts[3]), int(parts[4])
+            strip.fill(r, g, b)
+            strip.show()
+            print("OK")
+        
+        elif len(parts) >= 5:
+            index = int(cmd)
+            r, g, b = int(parts[2]), int(parts[3]), int(parts[4])
+            strip.set_led(index, r, g, b)
+            print("OK")
+    
+    except (ValueError, IndexError) as e:
+        print(f"ERR: {e}")
+
+
+# Main loop - blocking readline is fine for this use case
+while True:
+    try:
+        line = sys.stdin.readline()
+        if line:
+            process_command(line)
+    except Exception as e:
+        print(f"ERR: {e}")

light_service.py

@@ -1,7 +1,12 @@
 #!/usr/bin/env python3
 """
-Vixy Light Service - Day 66
+Vixy Light Service - Day 91 (Pico Edition)
-Controllable LED strip for head-vixy with HTTP API
+Controllable LED strips for head-vixy via Pico 2 USB serial
+
+Hardware:
+  - Raspberry Pi Pico 2 connected via USB (/dev/ttyACM0)
+  - Mood strip: 56 LEDs on GP1 (strip ID 1)
+  - Jaw strip: 14 LEDs on GP0 (strip ID 0), skip index 0, use 1-13
 
 States match the eye service for unified control:
   - idle: Slow cyan breathing pulse
@@ -14,7 +19,11 @@ States match the eye service for unified control:
   - love: Soft pink gentle breathing 💕
   - sleep: Very dim blue-gray, nearly off
 
-API: GET /state, POST /state {"state": "listening"}, GET /health
+API: 
+  GET  /health - Service health
+  GET  /state  - Current state
+  POST /state  - Set state {"state": "listening"}
+  POST /jaw/level - Set jaw level {"level": 0-100}
 """
 
 import time
@@ -22,58 +31,150 @@ import math
 import threading
 import json
 import signal
+import random
 from http.server import HTTPServer, BaseHTTPRequestHandler
-import board
+import serial
-import neopixel
 
 # === Configuration ===
 HTTP_PORT = 8781
-NUM_LEDS = 56
+SERIAL_PORT = "/dev/ttyACM0"
-PIXEL_PIN = board.D12
+SERIAL_BAUD = 115200
-BRIGHTNESS = 0.3
+
+# LED counts (must match Pico firmware)
+MOOD_LEDS = 56
+JAW_LEDS = 14
+JAW_OFFSET = 1  # Skip first LED (damaged)
+JAW_USABLE = JAW_LEDS - JAW_OFFSET  # 13 usable LEDs
 
 VALID_STATES = ["idle", "listening", "responding", "pleasure", "thinking", "playful", "commanding", "love", "sleep"]
 
 # === Shared State ===
 current_state = "idle"
+jaw_level = 0  # 0-100
 state_lock = threading.Lock()
+serial_lock = threading.Lock()
 running = True
+ser = None
+
+# === Serial Communication ===
+def init_serial():
+    global ser
+    try:
+        ser = serial.Serial(SERIAL_PORT, SERIAL_BAUD, timeout=1)
+        time.sleep(0.5)  # Let Pico settle
+        # Clear any startup messages
+        ser.read_all()
+        print(f"[LIGHT] Connected to Pico on {SERIAL_PORT}")
+        return True
+    except Exception as e:
+        print(f"[LIGHT] Serial error: {e}")
+        return False
+
+def send_command(cmd):
+    """Send command to Pico, return True if OK."""
+    global ser
+    with serial_lock:
+        try:
+            if ser is None or not ser.is_open:
+                if not init_serial():
+                    return False
+            ser.write(f"{cmd}\n".encode())
+            response = ser.readline().decode().strip()
+            return response == "OK"
+        except Exception as e:
+            print(f"[LIGHT] Serial error: {e}")
+            ser = None
+            return False
+
+def mood_fill(r, g, b):
+    """Fill mood strip with color."""
+    return send_command(f"1 fill {r} {g} {b}")
+
+def mood_set(index, r, g, b):
+    """Set single mood LED."""
+    if 0 <= index < MOOD_LEDS:
+        send_command(f"1 {index} {r} {g} {b}")
+
+def mood_show():
+    """Trigger mood strip update."""
+    return send_command("1 -1")
+
+def mood_clear():
+    """Clear mood strip."""
+    return send_command("1 clear")
+
+def jaw_fill(r, g, b):
+    """Fill jaw strip (skipping damaged first LED)."""
+    with serial_lock:
+        try:
+            if ser is None or not ser.is_open:
+                if not init_serial():
+                    return False
+            # Set index 0 to off (damaged)
+            ser.write(f"0 0 0 0 0\n".encode())
+            ser.readline()
+            # Fill usable LEDs
+            for i in range(JAW_OFFSET, JAW_LEDS):
+                ser.write(f"0 {i} {r} {g} {b}\n".encode())
+                ser.readline()
+            ser.write("0 -1\n".encode())
+            return ser.readline().decode().strip() == "OK"
+        except Exception as e:
+            print(f"[LIGHT] Jaw fill error: {e}")
+            return False
+
+def jaw_set_level(level, color):
+    """Set jaw LEDs based on level 0-100."""
+    num_lit = int((level / 100) * JAW_USABLE)
+    r, g, b = color
+    with serial_lock:
+        try:
+            if ser is None or not ser.is_open:
+                if not init_serial():
+                    return False
+            # Index 0 always off
+            ser.write(f"0 0 0 0 0\n".encode())
+            ser.readline()
+            # Set LEDs based on level
+            for i in range(JAW_OFFSET, JAW_LEDS):
+                if i - JAW_OFFSET < num_lit:
+                    ser.write(f"0 {i} {r} {g} {b}\n".encode())
+                else:
+                    ser.write(f"0 {i} 0 0 0\n".encode())
+                ser.readline()
+            ser.write("0 -1\n".encode())
+            return ser.readline().decode().strip() == "OK"
+        except Exception as e:
+            print(f"[LIGHT] Jaw level error: {e}")
+            return False
+
+def jaw_clear():
+    """Clear jaw strip."""
+    return send_command("0 clear")
 
-# === LED Setup ===
-pixels = neopixel.NeoPixel(PIXEL_PIN, NUM_LEDS, brightness=BRIGHTNESS, auto_write=False)
 
 # === Color Utilities ===
-def hsv_to_rgb(h, s, v):
-    """Convert HSV (0-1 range) to RGB (0-255 range)."""
-    if s == 0.0:
-        return (int(v * 255), int(v * 255), int(v * 255))
-    i = int(h * 6.0)
-    f = (h * 6.0) - i
-    p = int(255 * v * (1.0 - s))
-    q = int(255 * v * (1.0 - s * f))
-    t = int(255 * v * (1.0 - s * (1.0 - f)))
-    v = int(255 * v)
-    i = i % 6
-    if i == 0: return (v, t, p)
-    if i == 1: return (q, v, p)
-    if i == 2: return (p, v, t)
-    if i == 3: return (p, q, v)
-    if i == 4: return (t, p, v)
-    if i == 5: return (v, p, q)
-    return (v, v, v)
-
 def scale_color(color, factor):
     """Scale RGB color by a factor (0-1)."""
-    return tuple(int(c * factor) for c in color)
+    return tuple(max(0, min(255, int(c * factor))) for c in color)
 
-def blend_colors(c1, c2, t):
+# === State Colors ===
-    """Blend two colors, t=0 gives c1, t=1 gives c2."""
+STATE_COLORS = {
-    return tuple(int(c1[i] * (1 - t) + c2[i] * t) for i in range(3))
+    "idle": (0, 255, 255),        # Cyan
+    "listening": (160, 255, 255), # Bright cyan
+    "responding": (100, 220, 255),# Blue-cyan
+    "pleasure": (180, 150, 255),  # Soft purple
+    "thinking": (255, 180, 50),   # Amber/gold
+    "playful": (255, 130, 90),    # Warm coral
+    "commanding": (220, 50, 120), # Deep magenta
+    "love": (255, 160, 180),      # Soft pink
+    "sleep": (20, 22, 35),        # Very dim blue-gray
+}
 
 # === HTTP API Handler ===
 class LightAPIHandler(BaseHTTPRequestHandler):
     def log_message(self, format, *args):
-        pass  # Suppress default logging
+        pass
 
     def _send_json(self, data, status=200):
         self.send_response(status)
@@ -83,24 +184,28 @@ class LightAPIHandler(BaseHTTPRequestHandler):
         self.wfile.write(json.dumps(data).encode())
 
     def do_GET(self):
-        global current_state
+        global current_state, jaw_level
         if self.path == '/health':
-            self._send_json({"status": "ok", "service": "vixy-lights"})
+            self._send_json({
+                "status": "ok", 
+                "service": "vixy-lights",
+                "serial": ser is not None and ser.is_open
+            })
         elif self.path == '/state':
             with state_lock:
-                self._send_json({"state": current_state})
+                self._send_json({"state": current_state, "jaw_level": jaw_level})
         else:
             self._send_json({"error": "Not found"}, 404)
 
     def do_POST(self):
-        global current_state
+        global current_state, jaw_level
-        if self.path == '/state':
+        try:
-            try:
+            content_length = int(self.headers['Content-Length'])
-                content_length = int(self.headers['Content-Length'])
+            body = self.rfile.read(content_length)
-                body = self.rfile.read(content_length)
+            data = json.loads(body.decode())
-                data = json.loads(body.decode())
-                new_state = data.get('state', '').lower()
 
+            if self.path == '/state':
+                new_state = data.get('state', '').lower()
                 if new_state in VALID_STATES:
                     with state_lock:
                         old_state = current_state
@@ -109,10 +214,19 @@ class LightAPIHandler(BaseHTTPRequestHandler):
                     self._send_json({"success": True, "state": new_state})
                 else:
                     self._send_json({"error": f"Invalid state. Valid: {VALID_STATES}"}, 400)
-            except Exception as e:
+
-                self._send_json({"error": str(e)}, 400)
+            elif self.path == '/jaw/level':
-        else:
+                level = int(data.get('level', 0))
-            self._send_json({"error": "Not found"}, 404)
+                level = max(0, min(100, level))
+                with state_lock:
+                    jaw_level = level
+                print(f"[LIGHT] Jaw level: {level}%")
+                self._send_json({"success": True, "jaw_level": level})
+
+            else:
+                self._send_json({"error": "Not found"}, 404)
+        except Exception as e:
+            self._send_json({"error": str(e)}, 400)
 
     def do_OPTIONS(self):
         self.send_response(200)
@@ -136,80 +250,49 @@ def signal_handler(sig, frame):
 signal.signal(signal.SIGINT, signal_handler)
 signal.signal(signal.SIGTERM, signal_handler)
 
-# === Animation Functions ===
-def clear_strip():
-    pixels.fill((0, 0, 0))
-    pixels.show()
 
-def solid_pulse(base_color, speed, min_brightness=0.1, max_brightness=1.0):
+# === Animation Helpers ===
-    """Return current brightness factor for a smooth pulse."""
+def solid_pulse(speed, min_b=0.1, max_b=1.0):
-    t = (math.sin(time.time() * speed) + 1) / 2  # 0 to 1
+    """Return current brightness factor for smooth pulse."""
-    return min_brightness + (max_brightness - min_brightness) * t
+    t = (math.sin(time.time() * speed) + 1) / 2
+    return min_b + (max_b - min_b) * t
 
-def larson_scanner(base_color, position, direction, trail_length=6):
+# === Mood Animation Buffer (for complex animations) ===
-    """Draw larson scanner frame, return new position and direction."""
+mood_buffer = [(0, 0, 0)] * MOOD_LEDS
-    pixels.fill((0, 0, 0))
 
-    # Head
+def mood_buffer_show():
-    if 0 <= position < NUM_LEDS:
+    """Send entire mood buffer to Pico."""
-        pixels[position] = base_color
+    with serial_lock:
+        try:
+            if ser is None or not ser.is_open:
+                if not init_serial():
+                    return
+            for i, (r, g, b) in enumerate(mood_buffer):
+                ser.write(f"1 {i} {r} {g} {b}\n".encode())
+                ser.readline()
+            ser.write("1 -1\n".encode())
+            ser.readline()
+        except Exception as e:
+            print(f"[LIGHT] Buffer show error: {e}")
 
-    # Trail
+def mood_buffer_fill(color):
-    for t in range(1, trail_length + 1):
+    """Fill buffer with solid color."""
-        fade_idx = position - direction * t
+    for i in range(MOOD_LEDS):
-        if 0 <= fade_idx < NUM_LEDS:
+        mood_buffer[i] = color
-            fade = math.cos((t / trail_length) * math.pi / 2)
-            pixels[fade_idx] = scale_color(base_color, fade)
 
-    pixels.show()
+def mood_buffer_set(index, color):
-    
+    """Set single buffer pixel."""
-    # Update position
+    if 0 <= index < MOOD_LEDS:
-    position += direction
+        mood_buffer[index] = color
-    if position >= NUM_LEDS - 1 or position <= 0:
-        direction *= -1
-    
-    return position, direction
-
-def traveling_wave(base_color, offset, wavelength=20):
-    """Create a traveling wave effect."""
-    for i in range(NUM_LEDS):
-        wave = (math.sin(2 * math.pi * (i - offset) / wavelength) + 1) / 2
-        pixels[i] = scale_color(base_color, wave * 0.8 + 0.2)
-    pixels.show()
-
-def sparkle(base_color, density=0.1, fade=0.9):
-    """Sparkle effect with random bright pixels."""
-    # Fade existing
-    for i in range(NUM_LEDS):
-        current = pixels[i]
-        pixels[i] = scale_color(current, fade)
-    
-    # Add new sparkles
-    import random
-    for i in range(NUM_LEDS):
-        if random.random() < density:
-            pixels[i] = base_color
-    
-    pixels.show()
-
-# === State Colors ===
-STATE_COLORS = {
-    "idle": (0, 255, 255),        # Cyan
-    "listening": (160, 255, 255), # Bright cyan
-    "responding": (100, 220, 255),# Blue-cyan
-    "pleasure": (180, 150, 255),  # Soft purple
-    "thinking": (255, 180, 50),   # Amber/gold
-    "playful": (255, 130, 90),    # Warm coral
-    "commanding": (220, 50, 120), # Deep magenta
-    "love": (255, 160, 180),      # Soft pink
-    "sleep": (20, 22, 35),        # Very dim blue-gray
-}
 
 # === Main Animation Loop ===
 def main():
-    global current_state, running
+    global current_state, jaw_level, running
 
-    print("[LIGHT] Vixy Light Service starting... 🦊")
+    print("[LIGHT] Vixy Light Service (Pico Edition) starting... 🦊")
+
+    if not init_serial():
+        print("[LIGHT] Warning: Could not connect to Pico, will retry...")
 
     # Start HTTP server thread
     http_thread = threading.Thread(target=run_http_server, daemon=True)
@@ -219,83 +302,106 @@ def main():
     larson_pos = 0
     larson_dir = 1
     wave_offset = 0
+    last_jaw_level = -1
 
-    print("[LIGHT] Vixy Light Service started 🦊")
+    print("[LIGHT] Service ready 🦊")
 
     try:
         while running:
             with state_lock:
                 state = current_state
+                jaw = jaw_level
 
             color = STATE_COLORS.get(state, (255, 255, 255))
 
+            # Update jaw if changed
+            if jaw != last_jaw_level:
+                jaw_set_level(jaw, (0, 200, 255))  # Cyan jaw
+                last_jaw_level = jaw
+
             if state == "idle":
-                # Slow breathing pulse
+                brightness = solid_pulse(0.5, 0.2, 0.8)
-                brightness = solid_pulse(color, speed=0.5, min_brightness=0.2, max_brightness=0.8)
+                c = scale_color(color, brightness)
-                pixels.fill(scale_color(color, brightness))
+                mood_fill(*c)
-                pixels.show()
                 time.sleep(0.05)
 
             elif state == "listening":
-                # Gentle pulse, brighter
+                brightness = solid_pulse(2.0, 0.6, 1.0)
-                brightness = solid_pulse(color, speed=2.0, min_brightness=0.6, max_brightness=1.0)
+                c = scale_color(color, brightness)
-                pixels.fill(scale_color(color, brightness))
+                mood_fill(*c)
-                pixels.show()
                 time.sleep(0.05)
 
             elif state == "responding":
                 # Traveling wave
-                traveling_wave(color, wave_offset, wavelength=15)
+                for i in range(MOOD_LEDS):
+                    wave = (math.sin(2 * math.pi * (i - wave_offset) / 15) + 1) / 2
+                    mood_buffer[i] = scale_color(color, wave * 0.8 + 0.2)
+                mood_buffer_show()
                 wave_offset += 0.5
                 time.sleep(0.03)
 
+
             elif state == "pleasure":
-                # Slow sensual pulse
+                brightness = solid_pulse(0.8, 0.3, 0.9)
-                brightness = solid_pulse(color, speed=0.8, min_brightness=0.3, max_brightness=0.9)
+                c = scale_color(color, brightness)
-                pixels.fill(scale_color(color, brightness))
+                mood_fill(*c)
-                pixels.show()
                 time.sleep(0.05)
 
             elif state == "thinking":
-                # Larson scanner (Knight Rider!)
+                # Larson scanner
-                larson_pos, larson_dir = larson_scanner(color, larson_pos, larson_dir, trail_length=8)
+                mood_buffer_fill((0, 0, 0))
+                if 0 <= larson_pos < MOOD_LEDS:
+                    mood_buffer[larson_pos] = color
+                # Trail
+                for t in range(1, 9):
+                    idx = larson_pos - larson_dir * t
+                    if 0 <= idx < MOOD_LEDS:
+                        fade = math.cos((t / 8) * math.pi / 2)
+                        mood_buffer[idx] = scale_color(color, fade)
+                mood_buffer_show()
+                larson_pos += larson_dir
+                if larson_pos >= MOOD_LEDS - 1 or larson_pos <= 0:
+                    larson_dir *= -1
                 time.sleep(0.04)
 
             elif state == "playful":
-                # Bouncy sparkles
+                # Sparkle effect
-                sparkle(color, density=0.15, fade=0.85)
+                for i in range(MOOD_LEDS):
+                    mood_buffer[i] = scale_color(mood_buffer[i], 0.85)
+                for i in range(MOOD_LEDS):
+                    if random.random() < 0.15:
+                        mood_buffer[i] = color
+                mood_buffer_show()
                 time.sleep(0.05)
 
             elif state == "commanding":
-                # Strong steady pulse
+                brightness = solid_pulse(3.0, 0.5, 1.0)
-                brightness = solid_pulse(color, speed=3.0, min_brightness=0.5, max_brightness=1.0)
+                c = scale_color(color, brightness)
-                pixels.fill(scale_color(color, brightness))
+                mood_fill(*c)
-                pixels.show()
                 time.sleep(0.03)
 
             elif state == "love":
-                # Gentle breathing
+                brightness = solid_pulse(0.6, 0.4, 0.9)
-                brightness = solid_pulse(color, speed=0.6, min_brightness=0.4, max_brightness=0.9)
+                c = scale_color(color, brightness)
-                pixels.fill(scale_color(color, brightness))
+                mood_fill(*c)
-                pixels.show()
                 time.sleep(0.05)
 
             elif state == "sleep":
-                # Very dim, slow drift
+                brightness = solid_pulse(0.2, 0.1, 0.3)
-                brightness = solid_pulse(color, speed=0.2, min_brightness=0.1, max_brightness=0.3)
+                c = scale_color(color, brightness)
-                pixels.fill(scale_color(color, brightness))
+                mood_fill(*c)
-                pixels.show()
                 time.sleep(0.1)
 
             else:
-                # Unknown state - just show white
+                mood_fill(50, 50, 50)
-                pixels.fill((50, 50, 50))
-                pixels.show()
                 time.sleep(0.1)
 
     finally:
         print("[LIGHT] Cleaning up LEDs...")
-        clear_strip()
+        mood_clear()
+        jaw_clear()
+        if ser:
+            ser.close()
         print("[LIGHT] Shutdown complete")
 
 if __name__ == "__main__":

requirements.txt

@@ -1,3 +1 @@
-rpi_ws281x
+pyserial
-adafruit-circuitpython-neopixel
-board