Table of Contents
MSD I: Readiness to move to Build & Test
Progress ReportTasks Completed
- Prototype is mostly built
- Connection Scheme
- Gathered materials to test the structure (T-post and brackets)
- Connected Arduino to the web and streamed data
- Email alerts are functioning
- Ordered all sensors
- EC is working with the temperature sensor
- Water level working
- Temperature sensor working
- Programming for sensors
The engineering requirements document can be found here
The Risk assessment document can be found here
MSD II Tentative Plan
- Imagine RIT
- Demonstrate prototype with living plants ( either lettuce or strawberries) and active monitoring, with omponents, designs, and pictures of full scale build.
- Week 5 demonstration
- Should have functional systems up and running during the winter break.
- Sensors will be added to the protoype for testing.
- All sensors should be operational
- Fully functional prototype
- Construction of mechanical components
- Mechanically operating system with sensors
- Plants start growing
- Fully integrate monitoring system after mechanical system is capable of supporting plant groeth
- Construction at the farm will take place after the ground thaws.
- Subsystems assemblies can take place at RIT then transported.
- How-To document
- Mounting sensors
- Long term sensors testing
- Finalizing electrical housing and connections
MSD II: Project close-out
Status ReviewCurrent state of the project
- Sensors are working perfectly
- Full-scale unit with plants on Phil's farm
- Electrical Conductivity sensor is not electroplated
- Sensor accuracy is within 150 ppm
- Relay switch cuts off water pump and heaters if water is too low
Deliverables Checklist and Website Status
Risk and Problem Tracking
- Very easy-to-build design but might not survive for more than a few years without replacement
- Electrical system is made comprehensible, but could be more advanced if not limited by DIY form of implementation.
- Mechanical system seems like it will function well enough. Construction went smoothly enough, confident Phil can replicate what we did.
- Theoretically, scaling is feasible which is great. What will happen to the structure and the electronics in extreme weather?
- Designing the software for the system seems straightforward but implementing the code with the external electronics prove to be a challenge
- Simple design one all materials are purchased, system has potential for leaks but can easily be sealed. Electrical system could be made easier to implement with more expensive sensors.
- Making this widely available allows for others to copy and improve upon the design
- Invest more? Hard to tell without knowing how well strawberries grow
- Higher quality sensors could be added such as temperature and a higher resolution water flow sensor
- Add more electrical outlets to electrical box
- Design will be iterated at least 4 more sets of 5 channels according to Phil. Possibly more after that will small variation on the design.
- Some sensors may not be helpful or accurate over time (flow, EC)
- Adjustable channels may still be a good feature to add.
- Best to experiment with slight variations (channels, slope, flow-rate) before iterating the design too much