RF315/RF433MHz KeyFob or Wall Switch. TASMOTA settings and RF communication Guide

RF315/433MHz module. Hardware connection instruction

Tasmota uses the rc-switch library to decode RF codes. The ESP32R4 controller TASMOTA firmware is already built with the RC-switch library.

The ESP32R4 controller is already configured for use RF-Receiver. If you need to change and update the setting, follow to this instruction.

Open TASMOTA web interface. Menu – Configuration – Configure Module. Setup GPIO:
GPIO27 – RFrecv.

If you have an RF receiver configured, a message will be logged each time an RF code is seen. RF driver will try to decode it against all protocols supported by the rc-switch library.

When Tasmota receives an RF message, the data portion of the payload has the format as the JSON parameters to console:

“RfReceived”:{“Data”:”<hex-value>”,”Bits”:<value>,”Protocol”:<value>,”Pulse”:<value>}

This JSON payload data can be used in a rule such as:

ON RfReceived#Data=<hex-value> DO <command> ENDON

Example for 4 buttons KeyFob RF433:

Rule1 ON RfReceived#Data=0x214008 DO POWER1 2 ENDON ON RfReceived#Data=0x214004 DO POWER2 2 ENDON ON RfReceived#Data=0x214002 DO POWER3 2 ENDON ON RfReceived#Data=0x214001 DO POWER4 2 ENDON

Rule1 1

Also can use the mask of data received:

Rule1 ON RfReceived#Data$>08 DO POWER1 2 ENDON ON RfReceived#Data$>04 DO POWER2 2 ENDON ON RfReceived#Data$>02 DO POWER3 2 ENDON ON RfReceived#Data$>01 DO POWER4 2 ENDON

Rule1 1

Rule1 1 – it is the command to enable Rule1

Example for new RF-Switch:

When need to connect any RF-Wall Switch to ESP32R4 controller. 1-st check the transmission code of RF-Switch, this code you can find in console, when pressing the RF-switch:

{“Data”:”0x1E240″,”Bits”:24,”Protocol”:1,”Pulse”:351} This code “0x1E240” add to rule Rule1 ON RfReceived#Data=0x1E240 DO POWER1 2 ENDON POWER[x ] = Relay[x]

States:

• 0 / off / false = turn OFF
• 1 / on / true = turn ON
• 2 / toggle = if the power state is ON switch to OFF and vice versa
• 3 / blink = toggle power for BlinkCount times each BlinkTime duration (at the end of blink, power state is returned to pre-blink state)
• 4 / blinkoff = stop blink sequence and return power state to pre-blink state

Rules:
Rule[x] state

States:

• 0 = disable Rule<x>
• 1 = enable Rule<x>
• 2 = toggle Rule<x>
• 4 = disable one-shot detection (perform commands as long as trigger is met)
• 5 = enable one-shot (e.g., sometimes used for slow changing sensors like temperature) detection
• 6 = toggle one-shot detection
• 8 = disable stop-on-error after exception restart
• 9 = enable stop-on-error after exception restart
• 10 = toggle stop-on-error after exception restart
• <value> = define Rule<x>
• +<value> = append to Rule<x>
• " = clear Rule<x>