Environmental Sensing
Home Automation

HestiaPi Touch

An open source, smart thermostat for controlling HVAC and water systems

$21,831 raised

of $6,000 goal

363% Funded!
Not Available
Jul 02 2019
funded on

Recent Updates

You'll be notified about news and stock updates for this project.

(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 PSU6. Reset pin
2. MicroUSB (power + data)7. 4x Relays
3. MicroSD card8. Sensor connector
4. Raspberry Pi9. Reset button
5. LCD Connector + GPIO10. Terminals

Features & Specifications

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

Terminal Block Wiring

C(N)C - Common wireNeutral
R(L)R - RedLive
W(W)W - WhiteHot water
Y(H)Y - YellowHeating
G(Hum)G - GreenHumidity
W2Two-stage furnaceTwo-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:

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 Nestecobee4tado°Honeywell LyricHive
Price (USD)$145$249$249$253$253$228
US HVACYes Yes Yes No No Yes
EU HeatingYes Yes No Yes Yes Yes
Hot WaterYes Yes No No No Yes
Dehumidifier/HumidifierYes No No No No No
User InterfaceTouchscreen & app Touchscreen & app Touchscreen & app Buttons & app Touchscreen & app Buttons & app
ConnectivityWi-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 HomeBoth Both Both Both Both Both
US/EUBoth Both US only EU only EU only EU only
Power TypeMains, AC, C wire support Mains, AC, C wire support C wire only Batteries No C wire support, mains, AC Batteries
BatteriesNone None Required Required None Required
PrivacyOnly 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 IntegrationAny API or open platform Check compatibility list No No No Very limited
HackableYes No No No No No
MQTT SupportYes No No No No No
ESP8266 and Sonoff/Tasmota SupportYes/Yes No/No No/No No/No No/No No/No

Manufacturing Plan

All parts are sourced from various European and Asian suppliers and delivered to Athens, Greece. All crucial parts are subject to unit testing. Stock, PCB assembly, product assembly, and order handling is in Athens, Greece. All finished products are run through a final quality audit.

Risks & Challenges

We face two main risks and challenges in manufacturing and delivering HestiaPi Touch: low throughput of 3D printing enclosures and components delivery delays.

The largest potential manufacturing bottleneck is in the 3D-printed case. Any hiccup here will slow down the delivery of pledges that require a case (not all pledge levels require a case). We’ve mitigated this risk by having already successfully tested two separate 3D printing houses. We will use the fastest and cheapest (located in Greece) and, if something goes wrong, we will switch to the alternate factory until the primary factory is operating to our standards.

Regarding parts delivery delays and losses, we have three ways of protecting against these affecting delivery to backers. First, we will be ordering all parts from two different suppliers, both of which we’ve used before. This will increase the cost a little, but will save the day if one supplier’s delivery is postponed. Second, parts delivery will not be happening on a continuous basis, but assembly will, so we will stock up on all parts the first month of production and then assemble. At some point we will have enough parts and only assembly will slow down order delivery. Finally, we already have parts on-hand for around 50 complete orders.

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

Additional Hardware Road Map

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

FeatureRelease date
Portable remote sensor thermostatQ3 2019
Weather stationTBD
Modbus communication support (not backwards compatible)Q4 2019
RGB & WS2812 LED strip wireless controlQ4 2019

In the Press



"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. "

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Produced by MakeOpenStuff in Athens, Greece.

Sold and shipped by Crowd Supply.

HestiaPI PIY Kit

Print it yourself: no case, includes Pi, includes SD card, assembled.

$110 $8 US Shipping / $18 Worldwide

HestiaPi Deluxe Kit

Ready to go out of the box: assembled, includes SD card, case, and Pi.

$145 $8 US Shipping / $18 Worldwide

HestiaPi DIY Kit

Do it yourself: no case, no Pi, no SD card, soldering required.

$95 $8 US Shipping / $18 Worldwide

HestiaPi Deluxe Kit Early Bird

Ready to go out of the box: assembled, includes SD card, case, and Pi. Only a limited number of Early Bird units are available.

$99 $8 US Shipping / $18 Worldwide

About the Team


Athens, Greece  ·

We design, develop, and manufacture open source, wireless, and IoT solutions in the hospitality and residential sector.

See Also

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