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basmeerman merged 1 commit into from
Jun 26, 2026
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Update README.md #12

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# FanControl

ESP32 ventilation controller for a home battery room (Victron Multiplus / JK BMS / 6× 48 V LFP).
Drives a Ruck EM 125L EC 02 fan via PWM based on DHT22 temperature, integrates with Home
Assistant over the native ESPHome API, exposes a built-in web dashboard on `fancontrol.local`.
Generic Failsafe PWM Ventilation controller based on temperature.

- **Hardware:** LOLIN D32 (ESP32) + DHT22 + Ruck EM 125L EC 02 (PWM via level-shifter + MT3608 → 9 V)
It drives any PWM steered ventilator, for me specifically it drives a Ruck EM 125L EC 02 fan via PWM based LOLIN D32 (ESP32) on DHT22 temperature, integrates with Home
Assistant over MQTT and exposes a built-in web dashboard on `fancontrol.local`.

- **Hardware:** LOLIN D32 (ESP32) + DHT22 + Ruck EM 125L EC 02 (PWM via level-shifter)
- **PWM:** default 1 kHz, runtime-tunable 1–5 kHz (per Ruck datasheet)
- **Framework:** [ESPHome](https://esphome.io) — YAML-driven firmware, compiled on demand
- **Firmware size:** ~945 KB (under the 1.5 MB CI gate)

## Quick start

Prerequisites: Python 3.10+, [`pipx`](https://pipx.pypa.io), and a USB-C cable.
Prerequisites: Python 3.10+, [`pipx`](https://pipx.pypa.io), and a micro-USB cable.

```bash
# 1. Install ESPHome
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