"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."

"Runs a Linux-based openHAB stack on an RPI Zero W along with relays, a 3.5-inch display, and temperature, humidity, and pressure sensors."

"The HestiaPi features an integrated Raspberry Pi Zero W, wireless connectivity, 3.5-inch LCD display, and a host of sensors to monitor and control home heating and water."

"all the home automation advantages of something like Google’s Nest “smart” thermostat without running the risk of your data being sold to the highest bidder. "

(ch)own your smart home thermostat - if you don’t have root access, someone else does.

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.

Board Diagram 1. Modular PSU 6. Reset pin 2. MicroUSB (power + data) 7. 4x Relays 3. MicroSD card 8. Sensor connector 4. Raspberry Pi 9. Reset button 5. LCD Connector + GPIO 10. Terminals

Features & Specifications

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



*: Bottom side of PCB - mini HDMI, USB for power and camera connectors are physically blocked.

Terminal Block Wiring

Label US EU C(N) C - Common wire Neutral R(L) R - Red Live W(W) W - White Hot water Y(H) Y - Yellow Heating G(Hum) G - Green Humidity W2 Two-stage furnace Two-stage furnace

US vs. EU: Which option is right for me?

HestiaPi Touch is available in two options: US or EU. These determine the power supply input voltage (US: 24V AC, EU: 100-240V AC). The US option supports the C (common) wire in HVAC systems. Even if you live in the US, you may live in a house that does not support the C-wire, so make sure to check which is the right option for you.

US-HVAC Model Hookup (24V AC)

EU Model Hookup (100-240V AC)

No Need to Trade Privacy for Convenience

Our homes are becoming ever more enhanced with complex technologies. With proper automation and coordination of these technologies, our lives will become easier and more comfortable. Coming home after work to find a warm home with hot water ready to use is convenient. However, the very automation that affords us these conveniences also strips us of our privacy by constantly harvesting data about us and shipping it off to companies for marketing and other purposes.

We wanted a home automation solution that preserves our privacy and security, has all the features we need, and is available at a reasonable price. So, we did what engineers do in these situations: we spent time and brain cells to design and develop (and redesign and iterate) what would fit most of the people in the most economical way. As the number of pilot users increased, more features kept being added (and more bugs were squashed). Finally, we reached a point where HestiaPi covers most people’s needs out of the box and almost everyone else’s needs with just a bit of modification.

Open Source Benefits

HestiaPi is ready for makers, hackers, and developers. Because it’s open source, you can:

Control your own data

Fix your own hardware with off-the-shelf components

Add hardware to fit your needs

Run the software you want Patch security fixes first Run a custom distro or software Check open ports, services, and logs

Create a custom enclosure to fit your location

Designed for Expandability

HestiaPi’s open nature begs for expansion. So far, we have prototyped wireless sensor modules for sensing CO, CO2, various other gases, dust (PM2.5), smoke, temperature, relative humidity, wind speed and direction, water level, water leak, proximity, PIR motion, and magnetic contacts. We’ve also prototyped controlling and monitoring standard relays, power relays, electric motors, water pumps, sirens, lights, and RGB LED strips.

If HestiaPi is funded, a series of smaller projects are scheduled to deliver the most popular expansions, so you can start building your desired home automation on top of HestiaPi. For less techy people, Sonoff, M5Stack, and other manufacturers already offer solutions that can easily integrate with HestiaPi’s ecosystem.

Easy-to-use Interface Control

HestiaPi Touchscreen

Use HestiaPi’s attractive touchscreen to control the device.

HestiaPi has an easy-to-use, touchscreen interface.

We Support openHAB

HestiaPi is based on the openHAB platform. Use the platform’s accessible web and mobile interface to control HestiaPi.

Most of the cool things HestiaPi can do are because of openHAB. For every HestiaPi purchased during the crowdfunding campaign, we will donate at least €1 to openHAB Foundation e.V.

openHAB UX, from right to left: iOS, Android Light

openHAB UX; Android Dark

Compatible with Google Home and Amazon Alexa

OpenHAB already supports your favorite assistants, so you can easily add HestiaPi to your existing ecosystem.

How HestiaPi Compares

HestiaPi Touch Nest ecobee4 tado° Honeywell Lyric Hive Price (USD) $145 $249 $249 $253 $253 $228 US HVAC Yes Yes Yes No No Yes EU Heating Yes Yes No Yes Yes Yes Hot Water Yes Yes No No No Yes Dehumidifier/Humidifier Yes No No No No No User Interface Touchscreen & app Touchscreen & app Touchscreen & app Buttons & app Touchscreen & app Buttons & app Connectivity Wi-Fi, Bluetooth, and Ethernet (w/ additional adapter) Wi-Fi only Wi-Fi only Ethernet only with Internet bridge Wi-Fi only Wi-Fi only Works with Alexa, Google Home Both Both Both Both Both Both US/EU Both Both US only EU only EU only EU only Power Type Mains, AC, C wire support Mains, AC, C wire support C wire only Batteries No C wire support, mains, AC Batteries Batteries None None Required Required None Required Privacy Only you control your data Google controls your data ecobee controls your data tado° controls your data Honeywell controls your data Hive controls your data Home Automation Integration Any API or open platform Check compatibility list No No No Very limited Hackable Yes No No No No No MQTT Support Yes No No No No No ESP8266 and Sonoff/Tasmota Support Yes/Yes No/No No/No No/No No/No No/No

Support & Documentation

If you have a technical question about the operation of the HestiaPi or any of its applications, please ask the creators your question directly on their forum using the link above.

Shipping & Fulfillment

Orders will ship from Crowd Supply's warehouse in the US.

Domestic orders ship for free. Due to the complexities and costs of international shipping, an international surcharge will be assessed at checkout.

For more information, please read this page about ordering, paying, and shipping.

Additional Hardware Road Map

Should the HestiaPi campaign succeed, we’ll work on additional hardware modules and kits that will work with your unit.