These notes were compiled as ARMAC was designed and developed and are prior to the previous descriptions which were derived in significant part based on them.
However, these do contain three things which might be of interest:
- They show further technical detail of how the system is constructed.
- They additionally contain much of the detail of products considered and adopted, and even where they can be sourced and their price at the time. Because this was an ongoing process over some 18 months the notes may at times be out of date - in that the approach described was superceeded. If in doubt turn to the Technical Notes section of this site.
- They show, to a degree some of the reasons why some ideas were eventually supplanted by better ones. Some of the curious features that remain (for example a 13 core cable between house and pump shed) are legacies of earlier thinking which were replaced by better ideas (in this case placing an Arduino in the shed and then communicating over two wires between house and shed using RS485 digital protocols).
Development Notes Structure
The following is the complete sequence of sections across all three parts of the Development Notes, with links to each section.
- Description
- Development Stages
- Fire threat and critical defence decisions
- Sprinkler Layout Around House
- Sprinkler System Overview
- Footnotes
- Layout of plumbing in Pump Shed
- Outline of the water control system
- Pipe Supports
- Feeder pipe
- Pump
- Pump Shed
- Pump shed protection
- Pump shed ventilation
- Consideration of further insulation
- Water system components
- Tank
- Copper Pipe Risers to Sprinklers
- Anti-Syphon Control
- Flow, pressure and sprinkler requirements
- Intermittent spray Mode
- Footnotes
- Electronics and Control Systems
- The Relay Module
- Arduino AR3 pin assignments
- Relay Logic
- Relay setting programming notes
- Tank Water Level Sensor installation
- System response to Ember attack
- Multicore red and blue cable: connections
- Primary connections between Arduino pins, and relays and sensor
- Temperature sensor fallback
- Fallback Mode Logic
- Fallback Progression Sequence
- Timed Mode Transitions
- Shutdown Condition
- System Testing: The TestSys Module
- Voltage surge circuit protection
- Parallel circuit protection
- LCD DISPLAY in shed of key parameters in real time
- Protection against voltage surge and spikes
- Protection of more sensitive electronic components from water spray incident.
- Pump Control Module setup.
- Electronically controlled Valves
- Sensors
- Communications reslience
- Tuya Smart Switch fall-back
- Antennas
- Electronics integration through coupled Arduino-Raspberry Pi
- House-based Electronics Control Sub-system
- Battery Cable
- Multicore Cable
- Battery.
- Programming the microcomputers
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