4-Zone Wall Controller Firmware v2026.05.07 – Hold-to-Dim with Spill Control

Latest Firmware: v2026.05.07

This is the latest ESPHome YAML for the 4-Zone Wall Controller (4zoneWallV1), featuring hold-to-dim PWM control with unique naming and relay-only spill overlay.

What is New in This Version

• Hold-to-dim: Press and hold any zone button to ramp brightness up/down in 5% steps. Each new hold reverses direction, like a single-button dimmer switch.
• Spill control: Configure a spill zone that automatically opens to 100% when all other zones are off, protecting your HVAC system from dead-heading.
• Unique entity naming: Each zone gets individually named sliders and diagnostics so they integrate cleanly in Home Assistant dashboards.
• Slow PWM relay control: 300-second duty cycle PWM for zone dampers, giving precise proportional control across all four zones.
• PWM LED dimming: Button LEDs reflect effective zone output level (including spill) for clear at-a-glance feedback.

Download

Download tekonline-4zone-wall-controller-v2026.05.07.yml (rename .txt to .yml after download – WordPress blocks .yml uploads)

Quick Setup

1. Download the file above and rename extension from .txt to .yml
2. Copy it to your ESPHome config directory
3. Add your WiFi credentials in your secrets.yaml (see comments in the YAML)
4. Compile and flash via ESPHome Dashboard
5. Once online, configure the spill zone from the Home Assistant device page

Version History

• v2026.05.07 (this release) – Hold-to-dim PWM + spill overlay + unique naming
• v2026.04.23 – Initial shipping firmware with relay-linked zone toggles

For full setup instructions, visit the 4-Zone Wall Controller Setup Guide.