Customer route demonstration

Smart Water Tank Flow

Supported routes depend on the sensors, valves and pump plumbing installed at the site.

● AUTO TOUR

Water-supply plan

Municipal-water detection

Optional water sensor installed Water detectedSeparate gravity supply to source Level-rise test timeout Minimum confirmed rise

Demo tank-bank setup

Source tanks Upper tanks

Visual demo options

Animate tank levels Highlight municipal path Highlight motorized valves

Moving cyan dots and arrows show water flow across the complete route.

Grey pipes are inactive.

Current planMunicipal → Pump → Source

Motorized valve positionSource → Pump · standby

Source pumpON

System reasonSource below 95%

Demonstrated sensor status

Municipal water sensorAvailable

Source-tank water levelHealthy · 30%

Upper-tank water levelHealthy · 70%

Motorized valve feedbackSource → Pump · standby

Source-tank water qualityOptional · not configured

Upper-tank water qualityOptional · not configured

Sensor and power wiring

Current ESP32 master + ESP8266 slave architecture

LOW VOLTAGE / ISOLATED CONTROL

Master power distribution

Certified external 12 V DC adapter

↓ fused low-voltage feed

LM2596 buck converter · adjusted to 5 V

↓ 5 V + common GND

ESP32 VIN/5V · relay input side · JSN-SR04T

Load-test the 5 V rail before connecting the ESP32.
Relay, sensors, and ESP32 low-voltage interfaces share common GND.
Do not place a bare 230 V AC/DC converter inside the controller enclosure.

ESP32 master sensors

Source JSN-SR04T

Municipal dry-contact sensor

Lower turbidity · conditioned ADC

JSN: `VCC → 5 V`, `GND → GND`, `TRIG → configured output`.
JSN `ECHO → 5-to-3.3 V divider/level shifter → configured input`.
Municipal isolated contact connects configured GPIO to GND using configured pull-up/polarity.
Turbidity output must stay within the ESP32 ADC range and use the reviewed ADC1 pin.

ESP8266 upper-tank node

Separate stable 5 V adapter

↓ 5 V + GND

ESP8266 NodeMCU + upper JSN-SR04T

Optional upper turbidity → A0

Upper JSN: `TRIG → D1`; `ECHO → divider/level shifter → D2`.
Confirm the exact NodeMCU board's A0 input range before connecting turbidity output.
Slave sends sensor data to the ESP32 master over UDP `4210`.

Isolated control relays

ESP32 configured control outputs

↓ low-voltage relay inputs

START / STOP · independent OPEN / CLOSE pair for each installed valve

START uses an isolated NO contact in parallel with the green Start button.
STOP uses the approved isolated contact arrangement in the starter safety circuit.
Each installed valve requires its own electrically and logically interlocked OPEN/CLOSE outputs.

Field-side power

Relay dry contacts

↓ isolated field circuit

Starter/contactor + motorized valve supply

The PCB relay controls the starter/contactor circuit, not the pump motor directly.
A 220 V valve needs rated contacts, fuse/protection, earthing, and segregated field wiring.
Keep the physical Stop button and overload chain operational.

Build-time pin source

device.env.esp32_master

device.env.slave

Configured GPIO must match installed wiring

Never choose a GPIO from this illustration alone.
A configured pin of `-1` means optional hardware is unavailable.
Ship real devices with every simulator state OFF.

Electrical safety: 230 V starter, contactor, valve, breaker, overload, and earthing work must be completed by a qualified electrician. Keep all mains/field wiring physically separated from ESP32, ESP8266, USB, sensor, and ADC wiring.