About this project
Daisy in the press...
Potted plants liven up our surroundings.
Healthy plants are beautiful, however over time many plants don't do so well. You pick a plant by how it looks in the store and take it home. What does it need? Better yet, does anybody really know when it needs water?
Daisy is a low cost sensor and mobile 'game-like' application
Daisy sensor and app are designed to be fun and educational. The Daisy Sensor measures soil moisture, temperature, and light 24 hours a day and relays this information to your smart phone or tablet. With Daisy, there is no more guessing how your plants are doing.
Your plants cataloged right before your eyes!
Installing the Daisy Sensor system is easy. Place the sensor in the soil around your plant, download the app and connect app to the sensor. Name your plant, take a picture of your plant. Check it out!
Vital Information about each plant at your fingertips
Download the Daisy App to your tablet or smart phone and the app will notify you if your plant needs water or is otherwise stressed. For those of you who want more, click on your plant and you can view each parameters data displayed in week, month or year intervals.
The Daisy App is informative and Social
Browse our plant database and can learn about plants or post your plants, photos and growth statistics to your Facebook account and compare with friends.
Daisy Sensor: A science based learning experience for kids; a plant lifesaver for the brown thumbs; and a gentle reminder for busy people, the application is an easy to use part of the system.
ECCO PRO - Stretch goal addition to offering!
Digital spring is offering ECCO PRO sensors at a deep discount. These are professional line sensors designed for green houses or areas requiring monitoring of large shrubs or trees where the roots are well into the ground.
Above and Below are pictures of our ECCO PRO sensors tethered to our professional data logger which communicates to your cell phone or tablet using the same interface as Daisy.
ECCO PRO Data logger (white) and ECCO PRO Sensors in 4 potted plants servicing various sized plants ECCO PRO Data logger (white) and ECCO PRO Sensors in 4 potted plants servicing various sized plants
Our patent pending soil moisture sensor history.
Digital Spring is able to deliver Daisy Sensor at this price point primarily due to research by two friends back in January 2013. The below photo show our development from our first lab to where we are today.
The Summer of 2013 we eliminated the bic pen design and moved to a distributed design shown on left, then a production viable technique (center). Rounding out our pictures is our vision of a package for our new wireless sensor.
Here we are today! Our first sensor electronics are mated with production plastics. Our plan is to re-package the electronics design into the Daisy Sensor form factor. The only changes to the electronics will be the addition of a light transducer and battery form factor will be different.
A glimpse at our current progress
Attached are three videos which show the assembly of our sensor, the sensor in the ground taking measurements and our connecting to the sensor from inside the house and downloading the data.
Shown is a sensor we placed in the soil. We will connect to this sensor and download 1.5 months of data. Please note that although we are showing ECCO plastics, the Daisy Sensor is derived from this design.
This next video might be a bit dry, but it shows our sensor outside advertizing and being detected by the bluetooth low energy laptop running linux. The next shot in this video shows the laptop connecting to the device (please note that connection is slow due to the sensor sleeping much of the time to maintain battery life)
How about a glimpse at our app development. Taun explains...
Sensor package Design Specification / Goals
Sensor Data Reporting
- Gravimetric Soil moisture
- Soil moisture updated each 15 min, Graph showing soil moisture vs time
- Temperature updated each 15 min, Graph showing Temp vs time
- Light, updated each 15 min, Graph showing light as a function of time.
- Battery voltage – Idiot light will turn on when sensor has 1 month to live
- Wireless signal power - Idiot light will turn on when sensor is too far to make a measurement.
- Plant Common name or Scientific name must be provided
- User may name plant
- User may photograph plant
- User may give plant a personality from a list of personalities
- Soil height from bottom of pot to top of soil must be provided
- Type of soil is selected from a list
Sensor - Mechanicals:
- Daisy Dimensions – appx. 4.5” x 1.25” x 0.5”
Sensor - Electrical:
- Runs off two coin cells - Operation life – 3 years.
- Communication – Bluetooth, Low Energy standard 4.0
Sensor - Soil Moisture:
- Patent pending soil moisture sensor measures true dielectric constant of soil
- Dielectric constant range : 4-74 +/- 1
- Sensor Surface Area 3 ½ “ x 0.8” measurement surface area located on bottom front and back of sensor
- Accuracy +/- 1 degree C
- Located at dirt level
Sensor - Light
- Dynamic Range 100 – 10000 lux
- Located at top of sensor
Sensor - Battery
- Accuracy 0.05V
Risks and challenges
The Daisy sensor and the Daisy app are currently in development.
The Daisy sensor consists of 4 parts, the soil moisture sensor, the light sensor, the temperature sensor, the processor and transmitter. Today we have working prototypes with everything but the light sensor in our agricultural product, ECCO, which is in field trials now.
For price reasons, we want to place the light sensor inside the plastic mold. This requires us to thin the plastic enough to enable light to come through or developing a clear window inside the plastics. To keep the price of Daisy low, we will opt to try the thin plastic. If that does not work, we will have to develop a new mold with a window therefore impacting time to product/market. It will not impact working product as the most complicated part of the product, the moisture sensor and processor/transmitter sections are completed and are field tested.Learn about accountability on Kickstarter
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