Control your EcoFlow Stream 2 locally — no cloud
EF-Bridge is an ESP32-C3 firmware that connects to your Stream 2 over Bluetooth and serves a live web dashboard, MQTT and Home Assistant right on your home network. Telemetry and power-limit control — no internet, no third-party servers.
Everything the official app is missing
Direct BLE link to the inverter: your data stays home while your smart home gets full control.
Live web dashboard
PV1/PV2 generation, grid export, voltage, frequency, temperature — real-time from any device.
Power limit control
Dashboard slider, REST call or MQTT command — the limit is applied instantly via the native BLE command.
Home Assistant
MQTT auto-discovery: sensors and the limit control appear in HA by themselves. Automations out of the box.
REST API
GET /api/telemetry, /api/status, set the limit with a single request — integrate with anything.
Energy counters
Daily and lifetime production (kWh) computed on-device and preserved across reboots.
Setup wizard
First boot opens a step-by-step portal: Wi-Fi scan, BLE discovery of your Stream 2, EcoFlow account. Zero code.
Privacy
No cloud: telemetry never leaves your network. Optional password on the dashboard and API.
mDNS address
The dashboard is always at http://name.local/ — no hunting for IPs after a router reboot.
Diagnostics
Uptime, RSSI, BLE/MQTT state, free heap and factory reset — on a dedicated page.
From box to dashboard in 3 steps
All you need is an ESP32-C3 board (~$3) and Chrome or Edge. No Arduino IDE, no drivers, no terminal.
Flash from the browser
Plug the ESP32-C3 in via USB, open the install page and click “Install”. The web installer does the rest.
Run the wizard
Join the “Stream2-Setup” Wi-Fi hotspot — the wizard finds your network and your Stream 2, asking only for passwords. If the page doesn't open by itself, enter 192.168.4.1 in your browser.
Take control
Open the dashboard at your device address — telemetry is already flowing. Enable MQTT and Stream 2 appears in Home Assistant.
Simple pricing
Try it first — every feature is unlocked for 3 days. Like it? One payment, key forever.
Free trial
- All features, no limits
- Starts on first boot
- No card, no sign-up
License
- Key is bound to your ESP32
- All future firmware updates
- Key issued right after payment
FAQ
The essentials, briefly.
Is it safe for my Stream 2?
Yes. EF-Bridge speaks the same BLE protocol as the official app: it reads telemetry and sets the power limit with the native command. The inverter firmware is untouched.
Will the official EcoFlow app keep working?
Yes, over Wi-Fi and cloud — in parallel with EF-Bridge. The only limitation: BLE allows a single connection, so while the bridge is connected the app can't attach via Bluetooth.
What hardware do I need?
Any ESP32-C3 board (e.g. ESP32-C3 SuperMini, ~$3) and a USB cable. Nothing else — no soldering, no programmer.
Does it work without internet?
Dashboard, MQTT and control are fully local. Internet is only needed for time sync (NTP), the initial USER_ID fetch and license verification.
How many devices per key?
One key = one ESP32 (bound to its MAC address). A second bridge needs a second key.
Where do I find the MAC to buy a key?
On your device's Diagnostics page, and after the trial ends — on the /license page next to the key input field.
Try it now — it's free
The firmware installs from your browser in 2 minutes. Ten more and your Stream 2 is in Home Assistant.