Smart Home Device Usage Stream

import matplotlib.pyplot as plt
import numpy as np

COLORS = {
    'background': '#0a0a0f',
    'text': '#ffffff',
    'grid': '#333333',
}

np.random.seed(3131)
hours = np.arange(0, 24)

speakers = 15 + 20 * np.exp(-((hours - 8)**2) / 8) + 15 * np.exp(-((hours - 19)**2) / 10) + np.random.normal(0, 2, 24)
lighting = 10 + 25 * np.exp(-((hours - 20)**2) / 15) + 8 * np.exp(-((hours - 7)**2) / 5) + np.random.normal(0, 2, 24)
thermostat = 20 + 10 * np.cos(hours * np.pi / 12) + np.random.normal(0, 1, 24)
security = 30 + 5 * np.sin(hours * np.pi / 12) + np.random.normal(0, 1, 24)
appliances = 10 + 15 * np.exp(-((hours - 12)**2) / 10) + 12 * np.exp(-((hours - 19)**2) / 8) + np.random.normal(0, 2, 24)

data = [np.clip(d, 1, None) for d in [speakers, lighting, thermostat, security, appliances]]
colors = ['#27D3F5', '#F5B027', '#6CF527', '#F5276C', '#4927F5']

fig, ax = plt.subplots(figsize=(14, 6), facecolor=COLORS['background'])
ax.set_facecolor(COLORS['background'])

ax.stackplot(hours, *data, colors=colors, alpha=0.85, baseline='sym',
             labels=['Smart Speakers', 'Lighting', 'Thermostat', 'Security', 'Appliances'])

ax.axhline(0, color=COLORS['grid'], linewidth=0.5, alpha=0.5)
ax.set_xlim(0, 23)
ax.set_xticks([0, 6, 12, 18, 24])
ax.set_xticklabels(['12 AM', '6 AM', '12 PM', '6 PM', '12 AM'])

ax.set_title('Smart Home Device Activity', color=COLORS['text'], fontsize=14, fontweight='bold', pad=15)
ax.set_xlabel('Hour', color=COLORS['text'], fontsize=11)
ax.set_ylabel('Interactions', color=COLORS['text'], fontsize=11)

ax.legend(loc='upper center', bbox_to_anchor=(0.5, -0.12), frameon=False, 
          labelcolor=COLORS['text'], fontsize=9, ncol=5)

for spine in ax.spines.values():
    spine.set_visible(False)
ax.tick_params(colors=COLORS['text'], labelsize=9)

plt.tight_layout()
plt.subplots_adjust(bottom=0.18)
plt.show()