camp.djim.io

Real-time watt monitoring on incoming cable

SCT-013 CT clamp + ADS1115 ADC → Pi

• Detect when site is live vs dead
• Anomaly alert (something left on)
• Monthly cost tracking

Monitor grid voltage drops and surges

ZMPT101B voltage sensor → Pi ADC

• Alert before equipment damage
• Log brownout events

Continuous level reading via pressure sensor on e-Peilstab hose

MS5803-01BA (I2C) + T-splitter on e-Peilstab hose

• Alert when below 20%
• Predict order date from consumption history
• Track consumption per season

Read PV/SV from existing temperature controller

Pi Camera → OCR (existing tank-reader stack)

• Detect boiler failure
• Log heating cycles
• Efficiency tracking over time

Per-room ambient sensing

SHT31 or DHT22 → Pi GPIO / I2C

• Frost alert when away
• Condensation / mould risk alert
• Pre-heat trigger on arrival

Outdoor ambient sensor

DS18B20 waterproof probe → Pi 1-Wire

• Degree-day calculation for oil consumption forecasting
• Frost warning
• Compare inside vs outside delta

Continuous level via pressure sensor at tank bottom

MS5803-01BA (I2C) → Pi

• Alert before running dry
• Track daily consumption
• Estimate days remaining

Ultrasonic distance sensor pointing down into tank

JSN-SR04T waterproof ultrasonic → Pi GPIO

• Alert when nearly full
• Log pump-out intervals

Pulse-counting flow sensor on inlet pipe

YF-S201 hall-effect flow sensor → Pi GPIO

• Leak detection (flow when nobody on site)
• Daily usage stats
• Alert on sustained unexpected flow

Resistive water sensors at risk points

Resistive flood sensor → Pi GPIO

• Immediate Telegram alert on water detected
• Place near boiler, under sink, at tank connections

PIR sensors inside and outside

HC-SR501 PIR → Pi GPIO

• Intruder alert when away
• Log arrival / departure patterns

Magnetic reed switches on all openings

Reed switch → Pi GPIO

• Alert if left open
• Log access events
• Presence confirmation

WiFi MAC scanning for known devices

Pi WiFi (existing) — software only

• Know remotely if site is occupied
• Presence-aware automation (suppress alerts when home)

Tipping bucket rainfall counter

Tipping bucket rain gauge → Pi GPIO

• Log rainfall events
• Correlate with indoor humidity readings

Anemometer on exposed point

Cup anemometer → Pi GPIO pulse count

• Storm alerts
• Awning / tent damage prevention

Outside + soil temperature for freeze prediction

DS18B20 outdoor + soil probe → Pi 1-Wire

• Auto-trigger boiler pre-heat when frost predicted
• Pipe freeze prevention alert

Relay on boiler thermostat for remote trigger

SSR relay → Pi GPIO → boiler thermostat

• Trigger 2h before arrival via Telegram
• Schedule by calendar
• Auto-trigger based on arrival ETA

Smart plug or relay control

GPIO relay module or smart plug (local API)

• Arrive to a lit site
• Simulate presence when away

Digitally trigger manual measurement on e-Peilstab

NPN transistor (BC547) wired to button pads → Pi GPIO

• Trigger reading on demand via Telegram
• Fallback if pressure sensor not installed

CPU temp, disk, uptime, WiFi signal

Software only (existing Pi)

• Alert if Pi goes offline
• Watchdog auto-reboot
• Disk full warning

Monitor backup power state and charge

UPS HAT (e.g. PiJuice) or USB UPS with NUT

• Alert on mains failure
• Graceful Pi shutdown if battery critical