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Your plants' pH, conductivity and climate on your smartphone. Realtime data, push notifications, and graphs with you anytime, anywhere.
Your plants' pH, conductivity and climate on your smartphone. Realtime data, push notifications, and graphs with you anytime, anywhere.
26 backers pledged €3,744 to help bring this project to life.
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EGROWR - Connected hydroponic monitoring device



What is a prototype?

A prototype is a preliminary model of something. Projects that offer physical products need to show backers documentation of a working prototype. This gallery features photos, videos, and other visual documentation that will give backers a sense of what’s been accomplished so far and what’s left to do. Though the development process can vary for each project, these are the stages we typically see:

Proof of Concept

Explorations that test ideas and functionality.

Functional Prototype

Demonstrates the functionality of the final product, but looks different.

Appearance Prototype

Looks like the final product, but is not functional.

Design Prototype

Appearance and function match the final product, but is made with different manufacturing methods.

Production Prototype

Appearance, function, and manufacturing methods match the final product.

Project supporting material callout image

Prototype Gallery

These photos and videos provide a detailed look at this project’s development.

 UPDATE March 11 : We already have all the components, we have started the production and we even are in discussions with distributors in Europe and North America!

  •  Thursday : end of campaign
  •  May : rewards shipping

The management of the climate, the light and the nutrition are the key factors to succeed in hydroponic plant growing. As a hobbyist hydroponic grower and working as an electronic engineer, I am used to create many different devices that measure and act on my growing system.

As soon as I created a measurement system that collected all data and sent them to my smartphone, I realized how convenient it was. It helped me optimize my grow and improve my daily routine of monitoring all the variables in order to keep my plants healthy. And as my team and I have the experience and the machinery necessary to design, test and produce such a device, I decided to create the Egrowr out of this experience...

The Egrowr is meant to be a complete, connected, simple and affordable way to monitor your plants growing hydroponically.

the Egrowr includes :

  • a pH meter to measure the acidity of the nutritive solution
  • an electrical conductivity meter to measure the nutrient level
  • a water thermometer to measure the temperature of the nutritive solution
  • a thermometer to measure the air temperature
  • a relative humidity meter to measure the air humidity
  • a lux meter to evaluate the light intensity

We will release compatible wireless plug-and-play pump and relay modules to control the environment in the future for sure. The Egrowr will be the backbone for a whole plant growing ecosystem.

Egrowr monitoring : how it works
Egrowr monitoring : how it works

Instant connection. Just open the mobile app, it will automatically connect to the Egrowr whether you are at home (local mode) or outside (cloud mode).

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4 connection modes:    

Configure the Cloud mode and access data and full range graphs everywhere. You can still connect to the Egrowr through WiFi or read measurements on the Egrowr's screen.

Ensure your Egrowr stays on your home WiFi network only. Access your data and daily graphs as soon as your smartphone is connected to your home WiFi access point. You can still read measurements on the Egrowr's screen.

Connect directly your smartphone to the Egrowr’s access point and access your data and daily graphs in the WiFi range of the Egrowr.

Switch the WiFi module off and read the measurement on the Egrowr's screen directly.

Easy wifi configuration. Use the WPS button on your router to configure the WiFi easily without any password to enter. You can also configure the WiFi through the mobile app by directly connecting you smartphone to the Egrowr. (Check the Prototype Gallery for demo)

The Egrowr automatically re-connects itself to WiFi access point and to the Cloud server in case of a broken connection.


  •  All transmitted  data are encrypted with military grade AES 256 bits and RSA 2048 bits algorithms
  • The WiFi module uses WPA2/PSK security key which is the most secured standard at the moment. 
  •  No personal data are linked to the measurement stored in the data base, not even your IP or e-mail address. No log with personal data are saved. 

Connection / disconnection notification. Get notified instantly if your device loses connection to the server because of a WiFi or a power breakdown.

Thanks to the magnetic fixations for the tank probes and device, you can setup your system wherever your want in a non-invasive way (without screws or nails).

Splash-proof 4 button touch front. Don’t worry about splashing water on the screen. Note: the device itself is not water proof. (Check the Prototype Gallery for demo)

As we fight programmed obsolescence, all probes have a jack connector and are easily replaceable.

Screen and LEDs automatically switch off to prevent light pollution for plants that need a dark period to grow properly.

The Egrowr can by powered by any USB power supply with 750mA capacity like the included USB wall plug, a power bank or a computer. A power bank that can be charged while delivering power can be used as a backup battery for exemple.

All units are available: temperature (Celsius / Fahrenheit) and EC mS/cm or in ppm (500, 650, 700)

We will continuously work to improve the user experience. Updatable firmware and mobile app allows us to quickly add new features.

Egrowr is compatible with all pH probes on the market with a BNC connector.

We specially designed the EC probe with temperature compensation and 4 external titanium electrodes that are easy to clean and ensure a low measurement drift even with slime and dirt. Entirely sealed in epoxy resin, it's solid and durable.

The climate probe is based on the accurate and reliable DHT22 probe that measures the temperature and the relative humidity.

Egrowr's climate probe
Egrowr's climate probe

 The light sensor situated on the front of the Egrowr measures the light intensity in Lux. Place the Egrowr in the growbox halfway between the light and the top of the plants to get a reliable light measure.

All rewards include

  •  The Egrowr with mounting magnets
  •  The EC probe with a mounting magnet
  • The climate probe
  •  The power supply (wall plug + USB cable)
  •  The magnetic pH probe holder with a magnet
  • The User manual
  •  1 year of Cloud subscription. Next years : only $19 per year per device. With 30% discount for multiple devices owners.

Retail price of the bundle is 250 USD.

IMPORTANT : the pH probe is not included. During international shipping, pH probes can experience freezing temperatures, and as a result are likely to malfunction. 

we’ll offer you 3 options you can choose from:  

  •  You order your compatible pH probe directly from your favored provider and you can choose which pH probe you prefer growing with. 
  • We supply you with Amazon links for pH probes you can purchase and have delivered directly to you from the country you live. 
  • You choose the pH probe reward on the campaign and we will add it to your Egrowr bundle. This pH probe will be tested before shipping to you to make sure it’s functional. However, we repeat that pH probes don’t travel well, and so we are not responsible if you receive it malfunctioning. 

The annual Cloud subscription includes :

  •  Access to weekly and monthly graphs (only the last 24h measurements are stored on the device) 
  • Access to the Egrowr's real time data without being on the Egrowr WiFi network. 
  •  Downloads of all measurements from the Egrowr online account  
  • Unlimited push notifications.

Backers will be able to customize the length of the EC and climate probe cable to fit the best their installation. A simple 3.5mm stereo jack extension works perfectly as well. 

We will 3D print all the Egrowr plastic components and enclosure for the first production batch. It allows us to keep the campaign goal low and ensure an effective and quick production start after the end of the campaign. Our manufacturing capacity is about 100 units per month.

The small 3D printed components like the magnet holders won't be post processed, so they will have the 3D printed look-and-feel. However, the enclosure will be post processed and will look like it was produced using injection plastic technique. However some cosmetic defects due to the 3D printing process can remain on the enclosure. 

Egrowr's enclosure 3D printing
Egrowr's enclosure 3D printing

The Egrowr enclosure is produced with ASA. A plastic composite similar to ABS but with a much higher resistance to UV light and harsh weather conditions. It will last for years in a growbox event with a powerful light.

We also want to continuously improve the mobile app and the firmware of the Egrowr to add more features. For example, we plan to add information on when to calibrate your EC probe or on whether the pH probe needs to be replaced. We also plan to add a PPAR and DLI calculator among other features.

We want you to be part of this improvement, so we are happy to receive your feedback.

We also want to create a line of product for growers with the same philosophy : simple, innovative, affordable and reliable. Once again, your opinion as a backer will be a precious help.

Risks and challenges

Most of the risks and challenges are behind us. Our team is composed of experienced people working in the electronic and product design industries. Some of them are hydroponic plant growers for more than 6 years, so there is no improvisation here. We designed, prototyped and tested the Egrowr over the last 18 month.

The production line was tested and is ready to release up to 100 units per month. We will acquire more production machines if needed in case of massive demand.

The Egrowr complies with EU and US electronics device regulation (“CE” and “FCC”).

We have chosen widely available components that can be ordered from different sources, so the risk of component shortage is low.

The iOS mobile app needs to be finished. As the Android app is already done, it will be easy to implement the same on Apple’s platform.

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Funding period

- (30 days)

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