CapiBridge is an open-source gateway for low-power devices. It supports LoRa and ESP-NOW. The gateway receives JSON strings from LoRa and ESP-NOW sensors and publishes them to an HA MQTT server with autodiscovery. It automatically separates the JSON string into dynamic MQTT topics based on keys within the JSON, such as “b” for battery or “m” for motion. Any sensor or node that sends a JSON string with special keys ('k' for the gateway private key and 'id' for the node name, both of which are mandatory) will be automatically discovered. This gateway simplifies adding new DIY nodes/sensors to your smart home by standardizing the communication protocol across all DIY projects.
JSON example
{
"k": "xy",
"id": "ESP32",
"b": "3.8",
"rw": "Test123",
"dr": "on"
}
Supported Entities
| Key | Description | Unit of Measurement | Required |
|---|---|---|---|
k |
Private Gateway key | - | Yes |
id |
Node Name | - | Yes |
r |
RSSI | dBm | No |
b |
Battery Voltage | Volts | No |
v |
Volts | Volts | No |
pw |
Current | mAh | No |
l |
Luminance | lux | No |
m |
Motion | Binary on/off | No |
w |
Weight | grams | No |
s |
State | Anything | No |
t |
Temperature | °C | No |
t2 |
Temperature 2 | °C | No |
hu |
Humidity | % | No |
mo |
Moisture | % | No |
rw |
ROW | Anything | No |
bt |
Button | Binary on/off | No |
atm |
Pressure | kph | No |
cd |
Dioxyde de carbone | ppm | No |
dr |
Door | Binary on/off | No |
wd |
Window | Binary on/off | No |
vb |
Vibration | Binary on/off | No |
The new entities can be easily added…