Irrigation System

A hose timer tells you a valve opened. This tells you what came out of it. Seven zones, a hall-effect flow meter on every one of them, plus pressure, water temperature and TDS at the manifold and a second pair of meters straddling the fertiliser injector so you know how much concentrate actually went into the line. It runs about 1500 ft of drip tubing across a garden, blueberries, trees, blackberries, a mister run, a hose drop and the front beds.

Flow per zone is the part that earns its keep. A zone that suddenly reads double has a blown fitting; a zone that reads zero has a clogged filter or a valve that didn’t open. Both of those are invisible on a timer, and both of them are a dead bed by the time you notice.

Parts

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This is a big build and the list is long. Nothing here is optional if you want every entity in the config; take the electronics and the zone valves and skip the fertiliser half if you only want watering.

The pump box

• ESP32 38-pin DevKit (2-pack) — the config’s board: esp32dev
• ADS1115 16-bit I2C ADC (3-pack) — pressure, thermistor and TDS all land here
• PCF8575 16-bit I2C I/O expander (4-pack) — nine relay outputs off two wires
• 16-channel relay module — sold in 5 V, 12 V and 24 V coil versions; buy the one that matches your rail
• TXS0108E 8-channel level shifters (6-pack) — ten 5 V pulse lines into a 3.3 V board
• 24 V 5 A supply — one rail for the valves
• Isolated 12–72 V to 5 V buck converter — makes the 5 V for the ESP32 and the flow meters off that rail
• Large ABS NEMA enclosure — the 16-channel relay board on its own is bigger than a typical project box
• IP65 hinged junction box with glands ×2–3 — for the flow-meter junctions out at the manifold
• 12 V 70 W COB panel — the box light, dimmable from Home Assistant
• Dual MOSFET PWM driver module — a 3.3 V pin cannot drive that panel directly
• 5.5×2.1 mm barrel jacks and pigtails
• 24 AWG silicone hookup wire, 10 colours

The manifold

• WAYNE PLS100 1 HP stainless sprinkling pump
• 1 inch motorised brass ball valve, 9–24 V AC/DC, 2-wire auto-return ×7 for the zones, plus one for the pump valve — this is the expensive part of the build
• 1/2 inch normally-closed 12 V solenoid valve — the fertiliser output valve, on a smaller line
• G3/4 hall-effect flow meter, 2–45 L/min ×10 — seven zones, the manifold, and one either side of the injector
• G1/4 pressure transducer, 0–80 psi, 0.5–4.5 V out
• 0–200 psi test gauge, 3/4 inch hose thread — you need this to calibrate the transducer
• 50–55 psi brass pressure regulator — drip tubing does not want mains pressure
• Hose-bib backflow preventer — fertiliser goes in downstream of this, and it stays that way
• Analog TDS probe — nothing in the parts bin matches, so this is a search
• 10 kΩ NTC thermistor probe, B3950 plus a 10 kΩ resistor for its divider

Plus brass to join it all: G1/2 tees, G1/2 hex nipples, NPT-to-G adapters for the transducer port, 1/4 NPT to 3/4 GHT adapters, and a short 3/4 inch rubber hose for jumpers.

Fertiliser

• EZ-FLO 2005-HB 3/4 gallon low-pressure injector — the “EZ-Flo” sensors in the config are named after this
• G1/2 venturi injector — the cheap alternative if you’d rather mix from a bucket

Out in the yard

• 1/2 inch poly supply tubing, 500 ft — you will want three rolls
• Rain Bird 1/4 inch blank distribution tubing, 250 ft
• Rain Bird pressure-compensating emitter tubing, 50 ft rolls — buy more of these than you think
• 1/2 inch barbed fittings kit, 1/2 to 1/4 inch barbed tees, reducing tees and end plugs
• Adjustable 360° emitters on 6.5 inch stakes
• Rain Bird 10-32 micro-spray nozzles
• 49 ft misting line with 15 brass nozzles — the “Misters” zone
• 3/4 GHT to 1/2 inch drip adapters
• 6 inch galvanised landscape staples, 120-pack

Getting signal and power out there

• 16/2 low-voltage landscape cable, 500 ft — one pair per valve
• 1/2 inch liquid-tight conduit and fittings kit
• Solder-seal heat-shrink butt connectors — every splice that lives outside
• IP68 3-pin inline junction connectors
• Lever-nut wire connectors — for inside the box only

Filament

• PETG for anything that lives outdoors, or PLA+ for the drill guide if it stays in the shop.

Wiring

Every pin below comes out of bruh-pump.yaml. Change one and you change the matching line in substitutions: — that is the whole point of them being there.

Function	ESP32 pin
I2C SDA	GPIO21
I2C SCL	GPIO22
Manifold flow pulse	GPIO32
EZ-Flo inflow pulse	GPIO33
EZ-Flo outflow pulse	GPIO25
Zone 1 flow pulse	GPIO16
Zone 2 flow pulse	GPIO17
Zone 3 flow pulse	GPIO27
Zone 4 flow pulse	GPIO23
Zone 5 flow pulse (zone_5_pulse)	GPIO14
Zone 6 flow pulse (zone_6_pulse)	GPIO13
Zone 7 flow pulse	GPIO26
Box light PWM	GPIO18

Every pulse input is configured input: true, pullup: true. That is the right setup for a hall meter with an open-drain output — the pin idles at 3.3 V and the meter pulls it down. If yours drives its output high to its own 5 V supply instead, it needs the level shifter or it will sit 1.7 V above what the ESP32’s pins are rated for. Power and ground for the meters come off the buck converter.

On the I2C bus, the ADS1115 sits at 0x48 and the expander at 0x27. The expander’s outputs are all inverted: true, which is what a low-level-trigger relay board wants:

Output	PCF8575 pin
Zone 1–7	0, 1, 2, 3, 4, 5, 6
Pump water valve	14
Fertiliser output valve	15

And on the ADC:

ADS1115 channel	Reads
A0	Manifold pressure transducer
A1	TDS probe
A2	Thermistor divider

Two flow inputs are crossed in the file. The sensor named Z5 Flow reads ${zone_6_pulse} (GPIO13) and the one named Z6 Flow reads ${zone_5_pulse} (GPIO14). Either swap the two wires at the terminal strip or swap the two substitution references — but do it deliberately, because the zone switches are not crossed, so as shipped, opening Zone 5 makes Zone 6’s meter spin.

The ADS1115 has to run at 5 V here. The transducer swings to 4.5 V, which is why the config asks for gain: 6.144 — a 3.3 V reference simply cannot see the top of that range. If your breakout’s I2C pull-ups go to VDD, the bus will then idle at 5 V and the ESP32’s pins are in it. Pull SDA and SCL up to 3.3 V instead, or put the level shifter on the bus as well as on the pulse lines.

Assembly

1. Plumb the manifold dry first, on the bench, with the gauge fitted. Every flow meter has an arrow on it and it is not a suggestion. The pressure transducer taps a G1/4 port; the thermistor and TDS probe want to sit in flowing water, not in a dead leg where they read yesterday’s number.

2. Fit the regulator and the backflow preventer upstream of everything, and the fertiliser injection point downstream of the backflow preventer. That order is not negotiable — this is the one part of this build that can put fertiliser into drinking water.

3. Pressure-test the manifold before a single wire goes in. Ten meters and nine valves is a lot of threaded joints, and finding the weeping one with the box wired is miserable.

4. Mount the relay board and the ESP32 in the big box, and land every valve pair on the terminal strip before you connect the relay commons. Label the pairs as you land them. Seven identical brown wires is how a zone ends up watering the wrong bed for a season.

5. Run the flow-meter signal wires back through the shifter. Ten pulse lines at 5 V is the thing most likely to kill the ESP32 in this build.

6. Power the box in stages — 24 V rail first with the valve outputs disconnected, confirm the buck is putting out 5 V, then plug in the ESP32.

7. Flash and check the I2C scan in the ESPHome log before you close the door. scan: true is already set; you are looking for 0x27 and 0x48.

Configuration

The config is bruh-pump.yaml, in the download section below. Copy it into your ESPHome directory and fill in secrets.yaml — wifi_ssid, wifi_password, ota_password, api_key, ap_password. There is a secrets.yaml.example in the repo with every key these configs use.

Everything you’d normally change lives in substitutions: at the top — the device name, both I2C pins, the light pin, and all ten pulse pins.

The seven zone_N_name substitutions (Garden, Blueberries, Trees, Blackberries, Misters, Wood Hose, Front) are defined but nothing references them — the switches and sensors are named Zone 1 and Z1 Flow literally. Rename the entities in Home Assistant, or point the name: fields at the substitutions. Also defined and unused: manifold_sensor_power on GPIO4, left over from switching the analog sensors’ supply.

There is a second config, bruh-pump-s3.yaml, for an ESP32-S3-DevKitC-1. It is the same I2C addresses and the same nine relay outputs on different pins, but it carries only the manifold and the two EZ-Flo meters — no per-zone flow, no pressure, no temperature, no TDS. Build the ESP32 one unless you have a specific reason not to.

Calibration

Nothing on this device reads correctly out of the box, and all three calibrations are two-point.

Flow. Each pulse counter divides by a constant to get L/min: 483 for the manifold, 660 for the zones, 898 for the EZ-Flo pair. Those are pulses per litre for three different meters — if all yours are the same model, they should all be the same number. Find yours by running a zone into a bucket of known volume and dividing the counted pulses by the litres that came out. Do it at a realistic flow rate; these meters are not linear near the bottom of their range.

Pressure. The config maps 0 V to 0.5 psi and 5 V to 80 psi:

filters:
  - calibrate_linear:
      - 0.0 -> 0.5
      - 5 -> 80.0

That is a rough fit, not the transducer’s transfer function. Put the test gauge on the manifold, run the pump, and take two real readings — one at rest and one at working pressure — then replace both points. This is what the gauge is in the parts list for.

TDS. The chain is: raw voltage → temperature compensation at 2% per °C off 25 °C → a conversion lambda → a two-point calibrate_linear (22 → 22 and 1040 → 700) → a 5-sample moving average. Calibrate it with a bottled solution of known ppm and plain RO water, and replace both points.

The TDS conversion lambda looks like the standard cubic curve but isn’t. It reads 133.42 * V * 3 - 255.86 * V * 2 + 857.39 * V — multiplied by 3 and 2, not cubed and squared. It collapses to a straight line, about 373 × V after the 0.5 factor. In practice the two-point calibration downstream absorbs it and the number is usable near where you calibrated, but it will drift at the ends of the range. If you want the real curve, rewrite those terms with pow().

Printed parts

Two, and they do unrelated jobs.

air_injector_drill_guide_v3 is a drill guide: a 130 mm flange, 5 mm thick, with a 70 mm tower over a 21.5 mm bore (opening to 22 mm for the lowest 20 mm). The tower is that tall for one reason — a long bore is what stops a big bit walking when it bites. Clamp the flange flat, go slow, and back the bit out to clear chips rather than leaning on it. Check the bore against your actual bit before you commit to a print; a guide that is 0.3 mm loose is not a guide.

timer_indicator_disk_v2 is a 130 mm face, 0.4 mm thick, with a 6.2 mm D-profile centre hole (4.7 mm across the flat) and two 2.25 mm holes on a 14.5 mm bolt circle, plus an index tab that runs out to 140 mm overall. It presses onto a flatted shaft and pins to the two holes behind it.

Print settings

Setting	Drill guide	Indicator disk
Layer height	0.2 mm	0.2 mm
Walls	4+	n/a — it is two layers of solid
Infill	40%	100%
Supports	None	None
Material	PETG, or PLA+ if it lives indoors	PETG
Orientation	Flange on the bed, as exported	Flat, as exported

The guide wants walls, not infill — everything that matters is the bore surface, and a 20% part will flex around a bit under load. The disk is 0.4 mm total, so at 0.2 mm layers it is the first layer plus one; get your first layer right or it will curl off the plate before it finishes.

The other two CAD files, backyard_v2 and garden_sketch_v6, are layout sketches rather than parts — the plan of the beds and the runs. There is nothing to print in them.

Troubleshooting

A zone’s flow reads zero but water is coming out. Check the meter’s arrow first, then the signal wire. A hall meter wired backwards passes water happily and never pulses.

Every flow sensor reads a small non-zero number with the pump off. Electrical noise picked up on long pulse runs. Use one twisted pair per meter — signal and its own ground — and keep those runs out of the same conduit as the 24 V valve wiring. Switching nine inductive loads next to ten open-drain signal lines is asking for phantom pulses.

The device boots but no sensors appear. Read the I2C scan in the log. No 0x48 and no 0x27 means the bus isn’t running — usually SDA and SCL swapped, or no pull-ups on the bus at all. One address missing and the other present is a wiring fault on that one board, not a bus problem.

Manifold temperature reads a wild number or nan. The thermistor chain has three stages, and each one publishes its own entity for exactly this reason. Look at “Raw Manifold Temperature Voltage” first; if that is sensible, look at “Manifold Raw Resistance”. The resistance platform is configured DOWNSTREAM with a 10 kΩ resistor, so the thermistor goes to the supply and the fixed resistor to ground. Wire the divider the other way round and the curve inverts.

A valve buzzes and gets hot. The 2-wire auto-return valves draw their full current the whole time they are open. That is normal for the type, but it means seven zones open at once is not something the 5 A supply will do. Stagger them in Home Assistant.

Files & downloads

Printable parts

air_injector_drill_guide_v3 timer_indicator_disk_v2 air_injector_drill_guide_v3 (from CAD) timer_indicator_disk_v2 (from CAD)

Loading 3D model…

Drag to rotate · Scroll to zoom · Right-click to pan

• air_injector_drill_guide_v3.stl 180 KB
• timer_indicator_disk_v2.stl 81 KB

Parts marked from CAD are tessellated from the STEP files below, for previewing only — approximate where the STEP is exact. Download the STEP for the real model.

ESPHome configuration s (2)

Copy this into your ESPHome directory and adjust the substitutions at the top. Secrets are referenced by name — see secrets.yaml.example .

bruh-pump.yaml 487 lines

bruh-pump.yaml

# BRUH Irrigation Pump Controller
# ────────────────────────────────────────────────────────────
# Complex irrigation system pump controller with multiple zones,
# flow sensors, TDS/temperature monitoring, and fertilizer dosing.
# Supports 7 irrigation zones with real-time flow monitoring,
# manifold pressure/temperature/TDS measurement, and fertilizer
# inflow/outflow tracking.
#
# Hardware:
#   - Board: ESP32
#   - Sensors: Flow pulse counters (8 total)
#   - Sensors: ADS1115 ADC for pressure, temperature, TDS
#   - Control: PCF8574 I2C expander for 8 zone relays + 2 valves
# ────────────────────────────────────────────────────────────

substitutions:
  device_name: "Pump Box"
  device_id: "pump-box"
  manifold_sensor_power: GPIO4
  i2c_sda: GPIO21
  i2c_scl: GPIO22
  light_pin: GPIO18
  zone_1_name: Garden
  zone_2_name: Blueberries
  zone_3_name: Trees
  zone_4_name: Blackberries
  zone_5_name: Misters
  zone_6_name: Wood Hose
  zone_7_name: Front
  manifold_pulse: GPIO32
  fertilizer_inflow_pulse: GPIO33
  fertilizer_outflow_pulse: GPIO25
  zone_1_pulse: GPIO16
  zone_2_pulse: GPIO17
  zone_3_pulse: GPIO27
  zone_4_pulse: GPIO23
  zone_5_pulse: GPIO14
  zone_6_pulse: GPIO13
  zone_7_pulse: GPIO26

esphome:
  name: ${device_id}
  friendly_name: "${device_name}"

esp32:
  board: esp32dev
  framework:
    type: arduino

logger:

api:
  encryption:
    key: !secret api_key

ota:
  platform: esphome
  password: !secret ota_password

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:
    ssid: "Bruh-Pump Fallback Hotspot"
    password: !secret ap_password

captive_portal:

i2c:
  sda: ${i2c_sda}
  scl: ${i2c_scl}
  scan: true
  id: bus_a

ads1115:
  - address: 0x48
    i2c_id: bus_a
    id: ads1115_1

pcf8574:
  - id: 'pcf8574_hub_1'
    i2c_id: bus_a
    address: 0x27
    pcf8575: true

sensor:
  - platform: pulse_counter
    name: "Manifold Flow Rate"
    id: manifold_flow_rate
    pin:
      number: ${manifold_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 483);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Manifold Total"
      id: manifold_total
      filters:
        - lambda: return (x / 483);
      unit_of_measurement: "L"
      device_class: water
      state_class: total_increasing

  - platform: pulse_counter
    name: "EZ-Flo Inflow Rate"
    id: ez_flo_inflow_rate
    pin:
      number: ${fertilizer_inflow_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 898);
    unit_of_measurement: "L/min"
    state_class: measurement
    device_class: volume_flow_rate
    total:
      name: 'EZ-Flo Inflow Total'
      id: ez_flo_inflow_total
      filters:
        - lambda: return (x / 898);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "EZ-Flo Outflow Rate"
    id: ez_flo_outflow_rate
    pin:
      number: ${fertilizer_outflow_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 898);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: 'EZ-Flo Outflow Total'
      id: ez_flow_outflow_total
      filters:
        - lambda: return (x / 898);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z1 Flow"
    id: zone_1_flow
    pin:
      number: ${zone_1_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z1 Total"
      id: zone_1_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z2 Flow"
    id: zone_2_flow
    pin:
      number: ${zone_2_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 20s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z2 Total"
      id: zone_2_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z3 Flow"
    id: zone_3_flow
    pin:
      number: ${zone_3_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z3 Total"
      id: zone_3_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z4 Flow"
    id: zone_4_flow
    pin:
      number: ${zone_4_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z4 Total"
      id: zone_4_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z5 Flow"
    id: zone_5_flow
    pin:
      number: ${zone_6_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z5 Total"
      id: zone_5_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z6 Flow"
    id: zone_6_flow
    pin:
      number: ${zone_5_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z6 Total"
      id: zone_6_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "Z7 Flow"
    id: zone_7_flow
    pin:
      number: ${zone_7_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 660);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Z7 Total"
      id: zone_7_total
      filters:
        - lambda: return (x / 660);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: ads1115
    multiplexer: 'A0_GND'
    ads1115_id: ads1115_1
    name: "Manifold Pressure"
    update_interval: 5s
    unit_of_measurement: "psi"
    device_class: pressure
    gain: 6.144
    filters:
      - calibrate_linear:
          - 0.0 -> 0.5
          - 5 -> 80.0

  - platform: ads1115
    multiplexer: 'A2_GND'
    gain: 6.144
    name: "Raw Manifold Temperature Voltage"
    id: manifold_raw_temperature_voltage
    update_interval: 10s
    unit_of_measurement: "V"
    accuracy_decimals: 3
    internal: false

  - platform: resistance
    id: manifold_temp_resistance
    sensor: manifold_raw_temperature_voltage
    configuration: DOWNSTREAM
    resistor: 10kOhm
    name: "Manifold Raw Resistance"
    internal: false

  - platform: ntc
    sensor: manifold_temp_resistance
    calibration:
      b_constant: 3950
      reference_temperature: 25°C
      reference_resistance: 10kOhm
    name: "Manifold Temperature"
    id: manifold_water_temperature

  - platform: ads1115
    multiplexer: 'A1_GND'
    gain: 6.144
    update_interval: 10s
    name: "Manifold Raw TDS Voltage"
    ads1115_id: ads1115_1
    id: manifold_raw_tds_voltage
    unit_of_measurement: "V"
    accuracy_decimals: 3
    internal: false

  - platform: template
    name: "Manifold Compensated TDS Voltage"
    update_interval: 10s
    id: manifold_compensated_tds_voltage
    unit_of_measurement: 'V'
    accuracy_decimals: 3
    lambda: 'return ((id(manifold_raw_tds_voltage).state) / (1 + (0.02 * (id(manifold_water_temperature).state - 25.0))));'
    internal: false

  - platform: template
    name: "Manifold Uncalibrated TDS"
    update_interval: 10s
    id: manifold_tds_uncalibrated
    icon: "hass:water-opacity"
    unit_of_measurement: 'PPM'
    accuracy_decimals: 0
    lambda: 'return (133.42 * (id(manifold_compensated_tds_voltage).state) * 3 - 255.86 * (id(manifold_compensated_tds_voltage).state) * 2 + 857.39 * id(manifold_compensated_tds_voltage).state) * 0.5;'

  - platform: template
    name: "Manifold Calibrated TDS"
    update_interval: 10s
    id: manifold_tds_calibrated
    icon: "hass:water-opacity"
    unit_of_measurement: 'PPM'
    accuracy_decimals: 0
    lambda: return id(manifold_tds_uncalibrated).state;
    filters:
      - calibrate_linear:
          - 22 -> 22
          - 1040 -> 700
      - sliding_window_moving_average:
          window_size: 5
          send_every: 1

switch:
  - platform: gpio
    name: "Zone 1"
    pin:
      pcf8574: pcf8574_hub_1
      number: 0
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 2"
    pin:
      pcf8574: pcf8574_hub_1
      number: 1
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 3"
    pin:
      pcf8574: pcf8574_hub_1
      number: 2
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 4"
    pin:
      pcf8574: pcf8574_hub_1
      number: 3
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 5"
    pin:
      pcf8574: pcf8574_hub_1
      number: 4
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 6"
    pin:
      pcf8574: pcf8574_hub_1
      number: 5
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 7"
    pin:
      pcf8574: pcf8574_hub_1
      number: 6
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Pump Water Valve"
    pin:
      pcf8574: pcf8574_hub_1
      number: 14
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Fertilizer Output Valve"
    pin:
      pcf8574: pcf8574_hub_1
      number: 15
      mode:
        output: true
      inverted: true

output:
  - platform: ledc
    pin: ${light_pin}
    id: light_pin
    frequency: "19531Hz"

light:
  - platform: monochromatic
    output: light_pin
    name: "Pump Box"
    id: cob_panel
    default_transition_length: 0.5s

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bruh-pump-s3.yaml 236 lines

bruh-pump-s3.yaml

# BRUH Irrigation Pump Controller S3
# ────────────────────────────────────────────────────────────
# ESP32-S3 variant of the pump controller with similar
# functionality to bruh-pump.yaml. Uses ADS1115 and PCF8574
# I2C expanders for expanded I/O capacity.
#
# Hardware:
#   - Board: ESP32-S3
# ────────────────────────────────────────────────────────────

substitutions:
  device_name: "Pump Box S3"
  device_id: "pump-box-s3"
  manifold_sensor_power: GPIO38
  i2c_sda: GPIO1
  i2c_scl: GPIO2
  light_pin: GPIO48
  zone_1_name: Garden
  zone_2_name: Blueberries
  zone_3_name: Trees
  zone_4_name: Blackberries
  zone_5_name: Misters
  zone_6_name: Wood Hose
  zone_7_name: Front
  fertilizer_inflow_pulse: GPIO4
  fertilizer_outflow_pulse: GPIO5
  zone_1_pulse: GPIO6
  zone_2_pulse: GPIO7
  zone_3_pulse: GPIO15
  zone_4_pulse: GPIO16
  zone_5_pulse: GPIO17
  zone_6_pulse: GPIO18
  zone_7_pulse: GPIO9
  manifold_pulse: GPIO10

esphome:
  name: ${device_id}
  friendly_name: "${device_name}"

esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: arduino

logger:

api:
  encryption:
    key: !secret api_key

ota:
  - platform: esphome
    password: !secret ota_password

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:
    ssid: "Bruh-Pump-S3 Fallback Hotspot"
    password: !secret ap_password

captive_portal:

i2c:
  sda: ${i2c_sda}
  scl: ${i2c_scl}
  scan: true
  id: bus_a

ads1115:
  - address: 0x48
    i2c_id: bus_a
    id: ads1115_1

pcf8574:
  - id: 'pcf8574_hub_1'
    i2c_id: bus_a
    address: 0x27
    pcf8575: true

sensor:
  - platform: pulse_counter
    name: "Manifold Flow Rate"
    id: manifold_flow_rate
    pin:
      number: ${manifold_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 483);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: "Manifold Total"
      id: manifold_total
      filters:
        - lambda: return (x / 483);
      unit_of_measurement: "L"
      device_class: water
      state_class: total_increasing

  - platform: pulse_counter
    name: "EZ-Flo Inflow Rate"
    id: ez_flo_inflow_rate
    pin:
      number: ${fertilizer_inflow_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 898);
    unit_of_measurement: "L/min"
    state_class: measurement
    device_class: volume_flow_rate
    total:
      name: 'EZ-Flo Inflow Total'
      id: ez_flo_inflow_total
      filters:
        - lambda: return (x / 898);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

  - platform: pulse_counter
    name: "EZ-Flo Outflow Rate"
    id: ez_flo_outflow_rate
    pin:
      number: ${fertilizer_outflow_pulse}
      mode:
        input: true
        pullup: true
    update_interval: 10s
    filters:
      - lambda: return (x / 898);
    unit_of_measurement: "L/min"
    device_class: volume_flow_rate
    state_class: measurement
    total:
      name: 'EZ-Flo Outflow Total'
      id: ez_flow_outflow_total
      filters:
        - lambda: return (x / 898);
      unit_of_measurement: "L"
      device_class: volume
      state_class: total_increasing

switch:
  - platform: gpio
    name: "Zone 1"
    pin:
      pcf8574: pcf8574_hub_1
      number: 0
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 2"
    pin:
      pcf8574: pcf8574_hub_1
      number: 1
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 3"
    pin:
      pcf8574: pcf8574_hub_1
      number: 2
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 4"
    pin:
      pcf8574: pcf8574_hub_1
      number: 3
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 5"
    pin:
      pcf8574: pcf8574_hub_1
      number: 4
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 6"
    pin:
      pcf8574: pcf8574_hub_1
      number: 5
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Zone 7"
    pin:
      pcf8574: pcf8574_hub_1
      number: 6
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Pump Water Valve"
    pin:
      pcf8574: pcf8574_hub_1
      number: 14
      mode:
        output: true
      inverted: true
  - platform: gpio
    name: "Fertilizer Output Valve"
    pin:
      pcf8574: pcf8574_hub_1
      number: 15
      mode:
        output: true
      inverted: true

output:
  - platform: ledc
    pin: ${light_pin}
    id: light_pin
    frequency: "19531Hz"

light:
  - platform: monochromatic
    output: light_pin
    name: "Pump Box"
    id: cob_panel
    default_transition_length: 0.5s

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CAD source

The design itself, if you want to change it rather than print it. A STEP file is exact geometry and opens in almost anything; a Fusion 360 archive keeps the modelling history, so you can go back and edit the sketch that made the part.

• air_injector_drill_guide_v3.f3d 144 KB Fusion 360 archive — the editable design, with its history
• air_injector_drill_guide_v3.step 135 KB STEP — opens in Fusion 360, FreeCAD, Onshape, SolidWorks
• backyard_v2.f3d 36 KB Fusion 360 archive — the editable design, with its history
• backyard_v2.step 4 KB STEP — opens in Fusion 360, FreeCAD, Onshape, SolidWorks
• garden_sketch_v6.f3d 51 KB Fusion 360 archive — the editable design, with its history
• garden_sketch_v6.step 4 KB STEP — opens in Fusion 360, FreeCAD, Onshape, SolidWorks
• timer_indicator_disk_v2.f3d 77 KB Fusion 360 archive — the editable design, with its history
• timer_indicator_disk_v2.step 43 KB STEP — opens in Fusion 360, FreeCAD, Onshape, SolidWorks

Every file for this project on GitHub →