ESP-NOW
A protocol developed by Espressif for direct device-to-device communication over Wi-Fi, without the need for routers. Ideal for fast mesh networks with low power consumption.
See more!One Bridge
Infinite
Open-source communication bridge for IoT devices.
Built
to unify protocols
and expand
connectivity.
Our vision
Connecting every device,
across every protocol,
with one open bridge.
May 2024
Born from a real need
While working on a home automation project, we needed to connect several ESP boards communicating via ESP-NOW to an MQTT network. From this challenge, the concept of a universal bridge—Bifrost—was born.
July 2024
First attempts and early code
The first prototype was a simple script aiming to bridge ESP-NOW and MQTT. Although it didn’t work as expected, it marked the beginning of Bifrost’s development and helped us identify key technical challenges.
May 2025
Project revival
After months on hold, Bifrost was revived with the opportunity to be showcased at our university's Research Expo. This milestone brought new motivation and led to major improvements in the project.
June 2025
Functional prototype with Raspberry Pi
First working prototype integrates an ESP32 and a Raspberry Pi via serial. This enabled data processing, database storage, and reliable bridging between ESP-NOW and MQTT.
Future
Unified gateway & full protocol mesh
Our goal is to build a seamless gateway combining LoRa, Zigbee, ESP-NOW, and MQTT—enabling two-way communication across protocols, local automation, and complete data control with an integrated database.
Protocols
MQTT
A lightweight publish/subscribe protocol designed for IoT. It uses a broker to manage and route messages between connected devices efficiently.
See more!LoRa
A long-range, low-power communication protocol perfect for remote areas. Commonly used in telemetry, environmental monitoring, and precision agriculture.
See more!Zigbee
A short-range mesh network protocol based on the IEEE 802.15.4 standard. Widely used in smart home automation and energy-efficient smart devices.
See more!