Project Kickoff
Worked for 3 mins 37 sec
3/4 Run connectivity and ERC review; remediate issues
Inspect current schematic, project documents, and executor report
Wire the power, ESP32, relay driver, and external contactor/manual override interfaces
Run connectivity and ERC review; remediate issues
Create ESPHome configuration and record remaining safety assumptions
Thought for 7 sec
Reading schematic details.
Thought for 10 sec — Assessing connectivity issues
Completed 13 design checks — found 86 issues.
Thought for 13 sec — Considering executor review
Thought for 9 sec — Creating documentation while reviewing
Referenced guidance.
Thought for 47 sec — Creating firmware documentation
Updating 3 project docs.
Thought for 8 sec
Awaiting 1 background task
Created 3 project docs
Firmware Getting Started
Firmware Getting Started
Platform
- MCU: ESP32-C3-WROOM-02-N4 (U2)
- Framework: ESPHome
- Home Assistant integration: native ESPHome API
- Relay output: GPIO4, active high
- Hardware default: OFF via R3 100 kΩ pull-down and Q1 low-side driver
Save as
Control Behavior
esp32-pump-controller.yaml. Substitute secrets and encryption/API keys using the ESPHome dashboard.- After power-up or reset, the automatic relay output is OFF.
- Wi-Fi or Home Assistant loss does not energize the relay and does not reboot the controller.
- The external BTicino switch at J3 is not read by firmware. It directly bypasses K1's NO contact and can force the external contactor coil ON.
- Home Assistant cannot force the pump OFF while the manual switch is ON.
Board Bring-Up Plan
Board Bring-Up Plan
Prerequisites and Safety
- Equipment: multimeter, current-limited isolated 5 V bench supply, 3.3 V USB-UART adapter, oscilloscope if available.
- First tests must be performed with all mains wiring disconnected.
- Do not apply 230 VAC until the PCB enclosure, clearances, terminals, contactor, fuse/breaker, PE bonding, and wiring have been inspected by a qualified person.
- Never connect the pump directly to the PCB relay.
- Verify PS1, U1, U2, Q1 and D1 orientation.
- Verify K1 is the 5 V coil variant.
- Check separation between CTRL_MAINS_L/CTRL_MAINS_N/contact nets and 5V_SELV/3V3_SELV/GND_SELV.
- Confirm J5-J9 external representations are not populated on the PCB.
FCC CE Technical Construction File
FCC CE Technical Construction File
Status
Draft — schematic stage.
Product
Home Assistant/ESPHome water-pump controller using an ESP32-C3-WROOM-02-N4 Wi-Fi module. The controller energizes an external motor-rated contactor; it does not switch pump current directly.
Applicable Regulatory Areas
- FCC Part 15 intentional radiator requirements for US marketing.
- CE Radio Equipment Directive (RED) for EU marketing.
- EMC and electrical safety requirements for a mains-powered controller.
- Local installation codes for fixed 230 VAC pump equipment.
- Preserve the module antenna keepout specified by Espressif on every copper and mechanical layer.
- Place the antenna at a board edge with no enclosure metal, mains wiring, contacto...
Received notification from "ESP32 Pump Controller Verification" that it finished — picking the work back up.
Worked for 1 min 11 sec
The schematic is fully wired with 20 nets and independently verified: power, ESP32 support, relay driver, manual override, isolation, and external pump path all pass ERC with no warnings or errors.
- Open items: Final contactor, fuse/breaker, coil suppression, and mains clearances require the pump nameplate and PCB layout.
- Files created: Firmware Getting Started, Board Bring-Up Plan, and FCC CE Technical Construction File.
- Next priority: define the PCB outline, isolation rules, antenna keepout, and component placement before routing.
Start PCB constraints
Choose enclosure size
Review contactor options
Prepare manufacturing BOM
