Shawn Anderson posted this great project on Atomic Spin. He is using his pi to monitor his plants. Nice job!
Like any good “lazy programmer,” I’m always looking for ways to automate. This spring’s project: monitoring and watering my garden. I had a wifi-enabled Raspberry Pi laying around and decided to put it to good use. For this project I wanted to do better than just a glorified timer. The goal: An automated watering system that can use the weather forecast, soil, light, and temperature sensors to keep my garden looking great all summer.
I’ve written a simple script that wakes up at 10PM, determines the likelihood of rain, and waters accordingly. The script looks up the forecast using the Forecast.io API. If there is less than a 50% chance of rain, the GardenPi will water for a short duration.
Future phases (already underway) will include sensors for temperature, soil moisture, light, and humidity. Based on that information, the GardenPi will be able to make better watering decisions. The sensor data could be made available via an onboard website or mobile application. Better sensors, form factor, time lapse, and user interface are all things that I’ll be looking at for future versions.
I’ve learned a lot in the last few weeks from building this project — a little bit more about basic electronics, how to solder, how to draw up schematics, and the joy of building actual gizmos that serve a purpose. I’ve also learned that I’m not the only one doing this kind of project with the Raspberry Pi; I’ve included links to other projects at the end of this post.
Read the full tutorial here.
Featured Adafruit Products!
ADS1015 12-Bit ADC – 4 Channel with Programmable Gain Amplifier: For microcontrollers without an analog-to-digital converter or when you want a higher-precision ADC, the ADS1015 provides 12-bit precision at 3300 samples/second over I2C. The chip can be configured as 4 single-ended input channels, or two differential channels. As a nice bonus, it even includes a programmable gain amplifier, up to x16, to help boost up smaller single/differential signals to the full range. We like this ADC because it can run from 2V to 5V power/logic, can measure a large range of signals and its super easy to use. It is a great general purpose 12 bit converter. Read more.
Adafruit Perma-Proto Half-sized Breadboard PCB – Single: Customers have asked us to carry basic perf-board, but we never liked the look of most basic perf: its always crummy quality, with pads that flake off and no labeling. Then we thought about how people actually prototype – usually starting with a solderless breadboard and then transferring the parts to a more permanent PCB. That’s when we realized what people would really like is a proto board that makes it easy! Read more.
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