HestiaPi: Open Source Open Hardware Smart Thermostat for Your Home

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HestiaPi Touch is a completely open source smart thermostat for your home. With it, you can monitor your home’s temperature, relative humidity, and atmospheric pressure. You can also control your heating, ventilation, air conditioning, hot water, and more from anywhere you have an Internet connection.

You can do all this securely and with confidence your private data stays private. HestiaPi Touch is compatible with many devices and home automation systems and can serve as a central point of control that ties them all together in your home.

HestiaPi will be running a crowdfunding campaign on Crowd Supply till the 2nd of July to fund the latest model offering all below features.

• Integrated Raspberry Pi Zero W
  • Processor: Broadcom BCM2835 single-core CPU running @ 1 GHz
  • Memory: 512 MB RAM
  • Storage: includes 16 GB microSD card with latest software
• Wireless Connectivity
  • 802.11 b/g/n wireless LAN
  • Bluetooth 4.1 Low Energy (BLE)
• Touch Display
  • 3.5″ LCD resistive, single-point touch screen
  • Snaps onto Raspberry Pi GPIO header
• Temperature, Humidity, Pressure Sensing
  • Integrated Bosch BME280 I²C
    • Temperature: -40-80°C, ±0.5°C
    • Relative humidity: 0-100%, ±3%
    • Atmospheric pressure: 300-1100 hPa, ±1.0 hPa
• Solid State Electrical Relays
  • Four relays with normally open contacts
  • Relays are for AC loads only (as standard for all HVAC systems), no DC loads
  • Each relay rated for 2 A, 110-250 V AC
• Power
  • Connects to mains power or common (C) wire
  • Consumes less than 3 W (< $5 per year)
• Open Source Software
  • Pre-installed with OpenHAB 2
  • Mobile apps for Android, iOS, and Windows
  • Fully MQTT compatible
  • Can work with Google Home and Amazon Alexa
• Enclosure
  • 3D-printed
  • Choice of colors
• Dimensions
  • 12 cm x 13.5 cm x 3.8 cm
  • 200 grams (EU), 225 grams (US)
• Compatibility
  • Supports most US systems with five wires: C, R, W, Y, G (Common, Red, White, Yellow, Green)
  • Supports most 100-220 V AC mains-powered EU systems
  • Fahrenheit (°F) and Celsius (°C) supported

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