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Heated Greenhouse Table
Heated greenhouse tables serve two main purpose on the small market garden veggie farm. First, it offers a place with a fairly constant temperature to ensure high germination rates. Not too unlike the Sweat Box Germination Chamber (http://farmhack.org/tools/sweat-box-germination-chamber), However, this tool allows us to continue growing the seedlings under optimal conditions until they get a bit stronger. Secondly, we can get some onion plants out to the greenhouse to free up room in our seedling room. We start onions and greenhouse tomatoes under lights in the basement, then move them out to the greenhouse when we are ready to start heating the greenhouse/nursery.
Fido, the temperature alarm that sends text messages
Is your greenhouse getting frosty? How about too hot today? Is your fridge still on? Fido is a temperature alarm that will send you text messages that you can build for around $100. Solder together the Arduino based model or snap together the Raspberry Pi based model.
Automated Irrigation Controller
Using a moisture sensor, an Arduino, and a valve we document how to create a simple, battery powered, irrigation controller.
chicken coop automatic controls
Still a work in progress This will allow you to automatically control artificial light in your chicken coop along with an actuator for a door.
Arduino soil moisture data logger for extended remote usage
This is a simple soil moisture data logger using an Arduino Uno with a power-controller circuit to regulate connection between a battery pack and the Arduino. It has a battery life of months and is suited for remote data collection.
Hoophouse IoT & Temperature Control
49: IoT* for Farming & 56: Hoop House Temperature Control
Greenhouse controller
This is the first stage of a collaborative build of greenhouse controller. The primary purpose of this controller is to operate two motors for roll-up sides through a relay box that was built during a workshop hosted by the CAPE in Quebec. The secondary purpose is to operate a heating system with the powerswitch tail available from adafruit.
Long range wireless LoRa (15km) soil sensor network
Build a network of soil moisture sensors that report the state over long distances.
Electronic Flame Weeder System
This tool is used to allow remote control of a tractor mounted flame weeder. The arduino measures the temperature at the burner, and when no flame is detected sends an ignition spark to the burner. Both the arduino and the solenoid valve are operated by an on/off switch from a 12 volt power supply. The operator turns the burners on at the beginning of the row, and then off at the end of the row. If the wind blows out the flame, the arduino notices this temperature change, and sends a spark to the burner and reignites the propane.
Chicken Coop Sensor
This is a wireless, solar powered chicken coop sensor that measures ambient temperature and relative humidity inside of a chicken coop. It is made out of the internals of the soil/garden sensor that I posted here.