Moisture sensors

Read the accompanying blog posts Connecting plants to the internet. and Automatic plant watering with Raspberry Pi

Hardware components

• Raspberry Pi 3
• 2x Soil Moisture Hygrometer Detection Modul
• Witty Pi 2
• 3-6V Mini Submersible Water Pump

Prerequisites

• ThingSpeak account for data results
• Datadog account for monitoring

Configuration

Modify moisture.py sensors and pumps variables for your setup.

Installation

1. Install latest Raspbian on the Pi
2. Boot with HDMI monitor connected, connect to WiFi and enable SSH
3. Install Ansible requirements sudo ansible-galaxy install -r requirements.yml
4. Run playbook sudo ansible-playbook -i hosts playbook.yml --extra-vars "datadog_api_key=XXX" (add --ask-pass if SSH is set-up via password authentication)
5. Install WittyPi 2 following the manual and configure it to use the schedule.wpi file provided here