Premium

Void Core

The smart dome that grows with you.

$299Kit price — includes ESP32, sensors, fan, humidifier, and all electronics

The full experience. ESP32-powered with BME280 environmental sensors, automated PID humidity control, PWM active airflow, WiFi dashboard, and companion app. The Void Core monitors, adjusts, and optimizes conditions around the clock — so your fungi get laboratory precision on your kitchen counter.

Void Core smart dome with lion's mane mushrooms glowing under cyan light from the base
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FEATURES

What Sets It Apart

ESP32 Controller

Dual-core 240 MHz microcontroller with WiFi and Bluetooth. Runs PID loops, serves the web dashboard, and pushes data to the app.

BME280 Sensors

Precision temperature, humidity, and barometric pressure monitoring at 1-second intervals. Full environmental awareness.

Automated Humidity

Piezo ultrasonic humidifier with PID control maintains your target humidity ±2%. Set it and forget it.

Active FAE

PWM-controlled fan provides precise fresh air exchange. Automatically adjusts based on CO₂ buildup patterns.

WiFi Dashboard

Built-in web server serves a real-time dashboard on your local network. No cloud account required — your data stays yours.

UV-C + LED Array

Same UV-C sterilization as The Void plus full RGB lighting — all software-controllable with scheduling and automation.

SPECIFICATIONS

Technical Details

Dimensions8″ × 10″ (203 mm × 254 mm)
Growing Volume~1.8 L chamber
ControllerESP32-WROOM-32 (dual-core, WiFi + BLE)
SensorBME280 (temp / humidity / pressure)
Humidity ControlPiezo ultrasonic + PID (±2% accuracy)
Fan5 V PWM brushless (active FAE)
LightingUV-A + RGB LEDs (5 modes + scheduling)
SterilizationUV-C 275 nm with software scheduling
SafetyHardware reed switch interlock + firmware watchdog
ConnectivityWiFi 802.11 b/g/n + BLE 4.2
AppVoid Core companion (iOS / Android / Web)
PowerUSB-C 5 V / 3 A (15 W max)
Weight~400 g assembled
LicenseCERN-OHL-P-2.0 (hardware) / MIT (firmware + app)

HIGHLIGHTS

Why You'll Love It

  • ✓Fully automated humidity and airflow — set a target and walk away
  • ✓Real-time environmental dashboard accessible from any device on your network
  • ✓Companion app with grow logging, alerts, and species-specific profiles
  • ✓Over-the-air firmware updates — new features without opening the dome
  • ✓All data stays local by default — no cloud account required
  • ✓Complete open source stack: hardware, firmware, and app

BEST FOR

Tech enthusiasts and serious cultivators who want data-driven grows, automated climate control, and the ability to monitor everything from their phone.

Ready to Grow?

Build your own from open-source files or back us on Kickstarter.

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All hardware designs licensed under CERN-OHL-P-2.0. Free to use, modify, and distribute.

EXPLORE

Other Domes

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Dark Dome

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The Void

Where science meets the aesthetic.

$79