Files
OpenMQTT-Gateway/docs/setitup/rf.md
T
f5b33104ef [DOCS] Overhaul new-user onboarding, home page, and upload flow (#2347)
Getting started:
- New 15-minute Getting Started guide featuring the two most popular
  tracks (BLE on esp32dev-ble, RF on lilygo-rtl_433), with broker setup
  and a verification step
- Sidebar restructured around the new-user journey; upload options
  numbered by ease; Gitpod upload method removed

Home page:
- VitePress hero with clear actions, larger hero image
- How-it-works pipeline diagram shared as a component (responsive via
  container queries), use-case grid, bigger video tiles without the
  image lightbox, refreshed press coverage list, functions pills
- Support section pointing to Theengs Bridge and
  github.com/sponsors/1technophile

Upload flow:
- Decision-oriented upload landing page (journey strip, method cards,
  comparison table)
- Pre-flight checklist and driver troubleshooting on the web installer
- Guided environment picker (bridge + hardware wizard) replacing the
  filter chips, with manifest-verified recommendations
- Post-flash next-steps card linking to the portal and verification

Board images:
- custom_img key in environments.ini and board photos for all
  web-flashable environments (licenses recorded); private prod_env.ini
  environments excluded from boards-info.json

Corrections:
- RF frequency coverage stated as 433/315/868/915MHz
- Removed references to the retired compatible.openmqttgateway.com
  site (BLE list is decoder.theengs.io), the discontinued Theengs
  Plug, and the private sponsor forum


Claude-Session: https://claude.ai/code/session_01TYysQW8tpmt1dWWuzKhTLi

Co-authored-by: Florian <1technophile@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-03 10:23:43 -05:00

4.7 KiB

RF gateway (433/315/868/915MHz)

Protocols, modules and library

RTL_433 covers OOK protocols detailed here and supports auto-discovery following Home Assistant convention. The other libraries/modules are more for advanced users.

Board Protocols Assembly/Soldering required
Heltec LORA V2 433Mhz RTL_433, receiving only No
LILYGO® LoRa32 V2.1_1.6.1 433 Mhz RTL_433, receiving only No
ESP32 + SX127X RTL_433, receiving only Yes
ESP32 + CC1101 RTL_433, RF(RCSwitch), RF2(KaKu), Pilight Yes
ESP8266 + Basic RF modules (SRX, STX, XD RF, FS1000A RF(RCSwitch), RF2(KaKu), Pilight Yes
ESP8266 + CC1101 (might have lower range than with SRX/STX above) RF(RCSwitch), RF2(KaKu), Pilight Yes
ESP32 + Basic RF modules (SRX, STX, XD RF, FS1000A RF(RCSwitch), RF2(KaKu), Pilight Yes

:::tip If you want to try the RTL_433 module with a combination or a board outside of this list, verify that it has an SX1278 or a SX1276 :::

Heltec LORA V3 is not compatible with RTL_433 library as it is based on an SX1262 module.

Assembly/soldering required parts

Module Purpose Compatible modules Receiver Switching
SRX882 or SRX882S (recommended) 433Mhz Receiver RF(RCSwitch), RF2(KaKu), Pilight Supported
STX882 (recommended) 433Mhz Transmitter RF(RCSwitch), RF2(KaKu), Pilight Supported
CC1101 433Mhz Transceiver RTL_433, RF(RCSwitch), RF2(KaKu), Pilight Supported
SX1276/SX1278 433Mhz Transceiver RTL_433 Not Supported
LilyGo/Heltec 433Mhz Transceiver RTL_433 Not Supported

SRX STX Pinout

Board Receiver Pin Emitter Pin
ESP8266 D2/D1/D8 RX/D2
ESP32 27/26 12
RF BRIDGE - -
RF BRIDGE DIRECT HACK 4 5
SONOFF RFR3 4 -
RF WIFI GATEWAY 5 -

Connect the Emitter and Receiver to a 5V or 3.3V supply source, check datasheet of your modules to confirm (3.3V for CC1101), and the ground of your supply source to the ground of your board.

:::tip With SRX882S receiver connect the CS pin to 3.3V :::

CC1101 Pinout

Board Receiver Pin(GDO2) Emitter Pin(GDO0) SCK VCC MOSI MISO CSN GND
ESP8266 D2/D1/D8 RX/D2 D5 3V3 D7 D6 D8 GND
ESP32 D27 D12 D18 3V3 D23 D19 D5 GND

To use the CC1101 module, ZradioCC1101 must be uncomment in the User_config.h or added to the build_flags.

More information about the CC1101 wiring.

:::tip Please note that with OMG we are recommending CC1101 GDO2 to be connected to ESP32 D27 and GDO0 to be connected to D12, this is different than the LSatan diagram. This is due to the ESP32 using D2 as part of the boot process.

If you want to use custom SPI pins for the CC1101 module, you can define the following variables in your User_config.h or as build_flags in platformio.ini:

  • RF_CC1101_SCK: SPI clock pin (SCK)
  • RF_CC1101_SCK: SPI clock pin (SCK)
  • RF_CC1101_MISO: SPI MISO pin (Master In Slave Out)
  • RF_CC1101_MOSI: SPI MOSI pin (Master Out Slave In)
  • RF_CC1101_CS: SPI chip select pin (CSN)

When all these variables are defined, OpenMQTTGateway will use your custom pinout for the CC1101 connection. This is useful if your board does not use the default pins or if you want to avoid conflicts with other devices. :::

ESP32 Hardware setup

Addon_RF

ESP8266 Hardware setup

If the gateway works only when serial monitor is connected don't use D3 use D2 instead (gpio 4) and modify config_RF.h accordingly.

With SRX882 some users reported that D3 is not working use D1 instead in this case and modify config_RF.h accordingly.

Addon_RF

SONOFF RF Bridge Hardware setup

Per default there is no need on modifying the RF Bridge hardware, unless you don't want to use the provided RF controller (EFM8BB1). Indeed if you want to extend the protocols supported by the bridge you can bypass this controller and use the ESP8255 capacities to decode RF Signal. The RF processing can be achieved after the modification by either RF, RF2 or Pilight gateways.

SONOFF RFR3 Hardware setup

Connect GPIO4 of the ESP8255 to the pin D0 of SYN470

WIFI RF GATEWAY Hardware setup

This board doesn't require any hardware modifications.