Carro Ceiling Fan OpenBeken Config: WBR3 RTL8720CF TuyaMCU, DPIDs, Light & Fan Control

Question

Hello, I have successfully ported the cloudcutter exploit to the RTL8720CF and flashed my Carro ceiling fan with openbeken. It's a TuyaMCU ceiling fan with a light attached to it, with an independently controlled white and warm LED. The fan also is reversible and has an oscillation mode. There...

divadiow · Answer

Hello I don't have the real thing of course but I did stick your autoexec into OpenRTL87x0C tester and I am not getting any web console access issues

jeremysalwen · Answer

>>21754415
Thank you. I figured out that it was old configuration that I needed to clear out using ClearIO. I thought rebooting would clear everything not in my autoexec.bat, so I was confused.

Do you have suggestions of how to make it appear properly in Home Assistant as a single light fan?

I had the idea to use change handlers to have virtual brightness and color temperature controls that set both light statuses, but for some reason my change handlers don't seem to be firing consistently (if I run RecalcCCT from the console it seems to do the right thing!)


setChannelType 12 Dimmer1000
SetChannelLabel 12 "Light Brightness"
setChannelType 13 Dimmer1000
SetChannelLabel 13 "Light CT"
alias RecalcCCT backlog setChannel 6 2*$CH12*(1000-$CH13)/1000;  setChannel 8 2*$CH12*$CH13/1000;
AddChangeHandler Channel12 > -1 RecalcCCT
AddChangeHandler Channel13 > -1 RecalcCCT

Added after 5 [hours] 50 [minutes]:

Okay, I got it working good enough as a virtual light. The only thing that is not totally great is that brightness changes from the remote are not reflected in openbeken/homeassistant (although color temperature changes, aka the power states of the two leds, are). I had to use a manual homeassistant mqtt configuration

```
startDriver TuyaMCU

# ------------------------------------------------------
# Fan power (DP 1)
# ------------------------------------------------------
setChannelType 1 Toggle
SetChannelLabel 1 "Fan"
linkTuyaMCUOutputToChannel 1 bool 1

# ------------------------------------------------------
# Fan speed (DP 3) - enum 1..10
# ------------------------------------------------------
setChannelType 2 Enum
SetChannelLabel 2 "Fan Speed"
SetChannelEnum 2 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 8:8 9:9 10:10
linkTuyaMCUOutputToChannel 3 enum 2

# ------------------------------------------------------
# Fan mode (DP 2) - enum sleep/normal/nature
# ------------------------------------------------------
setChannelType 3 Enum
SetChannelLabel 3 "Fan Mode"
SetChannelEnum 3 0:Sleep 1:Normal 2:Nature
linkTuyaMCUOutputToChannel 2 enum 3

# ------------------------------------------------------
# Fan direction (DP 103) - enum forward/reverse
# ------------------------------------------------------
setChannelType 4 Enum
SetChannelLabel 4 "Fan Direction"
SetChannelEnum 4 0:Forward 1:Reverse
linkTuyaMCUOutputToChannel 103 enum 4

# ------------------------------------------------------
# Warm light (DP 9 switch, DP 10 brightness) - PHYSICAL
# ------------------------------------------------------
setChannelType 5 Toggle
SetChannelLabel 5 "Warm Light"
SetChannelPrivate 5 1
linkTuyaMCUOutputToChannel 9 bool 5

setChannelType 6 Dimmer1000
SetChannelLabel 6 "Warm Brightness"
SetChannelPrivate 6 1
linkTuyaMCUOutputToChannel 10 val 6

# ------------------------------------------------------
# Cool light (DP 101 switch, DP 102 brightness) - PHYSICAL
# ------------------------------------------------------
setChannelType 7 Toggle
SetChannelLabel 7 "Cool Light"
SetChannelPrivate 7 1
linkTuyaMCUOutputToChannel 101 bool 7

setChannelType 8 Dimmer1000
SetChannelLabel 8 "Cool Brightness"
SetChannelPrivate 8 1
linkTuyaMCUOutputToChannel 102 val 8

# ------------------------------------------------------
# Tell OBK our brightness scale for TuyaMCU dimmers
# ------------------------------------------------------
tuyaMcu_setDimmerRange 10 1000

# ------------------------------------------------------
# VIRTUAL CCT LIGHT
# CH11 = master power
# CH12 = virtual brightness (0..1000)
# CH13 = virtual color temp (0..1000, 0=warm, 1000=cool)
# ------------------------------------------------------

# Master power
setChannelType 11 Toggle
SetChannelLabel 11 "Light"

# Virtual color temperature
setChannelType 12 Dimmer1000
SetChannelLabel 12 "Light CT"

# Virtual brightness
setChannelType 13 Dimmer1000
SetChannelLabel 13 "Light Brightness"

# ------------------------------------------------------
# Helpers for virtual CCT logic
# ------------------------------------------------------

setChannelType 14 Dimmer1000
SetChannelLabel 14 "CCT Helper"
SetChannelPrivate 14 1
SetChannelVisible 14 0

alias RecalcCCT backlog setChannel 14 2*$CH13*(1000-$CH12)/1000; if $CH14>1000 then "setChannel 6 1000" else "setChannel 6 $CH14"; setChannel 14 2*$CH13*$CH12/1000; if $CH14>1000 then "setChannel 8 1000" else "setChannel 8 $CH14";

alias DoSyncVirtualFromPhysical backlog setChannel 13 ($CH6+$CH8)/2; setChannel 12 1000*$CH8/($CH6+$CH8);
alias SyncVirtualFromPhysical backlog if $CH6!=0||$CH8!=0 then DoSyncVirtualFromPhysical else "setChannel 13 0"

# ------------------------------------------------------
# Virtual light handlers
# ------------------------------------------------------

# Any change of Brightness or CT should recompute mix
addEventHandler OnChannelChange 12 RecalcCCT
addEventHandler OnChannelChange 13 RecalcCCT

# When All Lights is turned ON, turn both lights ON
AddChangeHandler Channel11 == 1 backlog SetChannel 5 1;SetChannel 7 1

# When All Lights is turned OFF, turn both lights OFF
AddChangeHandler Channel11 == 0 backlog SetChannel 5 0;SetChannel 7 0
# ------------------------------------------------------
# Keep virtual Light in sync with PHYSICAL Tuya switches
# (so local MCU buttons still affect CH11 state)
# ------------------------------------------------------

# If either individual light is turned ON, set master Light = ON
AddChangeHandler Channel5 == 1 SetChannel 11 1
AddChangeHandler Channel7 == 1 SetChannel 11 1

# If a light is turned OFF, and BOTH are now OFF, set master Light = OFF
AddChangeHandler Channel5 == 0 if $CH5==0&&$CH7==0 then SetChannel 11 0
# You can also enable this if you want symmetrical behaviour:
AddChangeHandler Channel7 == 0 if $CH5==0&&$CH7==0 then SetChannel 11 0

# ------------------------------------------------------
# Initial sync at boot
# ------------------------------------------------------
if $CH5!=0||$CH7!=0 then SetChannel 11 1
if $CH5==0&&$CH7==0 then SetChannel 11 0

```

HomeAssistant Configuration:
```
mqtt:
fan:
- name: "Living Room Fan 1"
unique_id: "livingroomfan1.fan"
state_topic: "livingroomfan1/1/get"
command_topic: "livingroomfan1/1/set"
payload_on: "1"
payload_off: "0"

availability_topic: "livingroomfan1/connected"
payload_available: "online"
payload_not_available: "offline"
qos: 1
retain: true

# ---- Speed as percentage mapped to Enum 0..10 on Channel 2 ----
percentage_state_topic: "livingroomfan1/2/get"
percentage_command_topic: "livingroomfan1/2/set"

# Home Assistant UI is 0–100%, Tuya speed is 0–10
speed_range_min: 1
speed_range_max: 100

percentage_value_template: >
{# MQTT payload (channel 2) is 0..10, convert to 0..100% #}
{% set s = value | int %}
{{ (s * 100 / 10) | round(0) }}

percentage_command_template: >
{# HA sends 0..100%, convert back to 0..10 enum #}
{% set p = value | int %}
{% if p <= 0 %}
0
{% elif p >= 100 %}
10
{% else %}
{{ (p * 10 / 100) | round(0) }}
{% endif %}

# ---- Direction (Channel 4: 0=Forward, 1=Reverse) ----
direction_state_topic: "livingroomfan1/4/get"
direction_command_topic: "livingroomfan1/4/set"
direction_value_template: >
{% if value | int == 1 %}
reverse
{% else %}
forward
{% endif %}
direction_command_template: >
{% if value == 'reverse' %}
1
{% else %}
0
{% endif %}

# ---- Modes mapped to your Fan Mode enum on Channel 3 ----
# CH3: 0:Sleep 1:Normal 2:Nature
preset_modes:
- sleep
- normal
- nature
preset_mode_state_topic: "livingroomfan1/3/get"
preset_mode_command_topic: "livingroomfan1/3/set"
preset_mode_value_template: >
{% set v = value | int %}
{% if v == 0 %}
sleep
{% elif v == 1 %}
normal
{% elif v == 2 %}
nature
{% else %}
normal
{% endif %}
preset_mode_command_template: >
{% if value == 'sleep' %}
0
{% elif value == 'normal' %}
1
{% elif value == 'nature' %}
2
{% else %}
1
{% endif %}

device:
identifiers: ["livingroomfan1"]
manufacturer: "OpenBeken"
model: "Tuya Fan (BK7231)"
name: "Living Room Fan 1"
configuration_url: "http://192.168.1.213/index"
light:
- name: "Living Room Fan 1 Light"
unique_id: "livingroomfan1.light"

# Master power (Channel 11)
state_topic: "livingroomfan1/11/get"
command_topic: "livingroomfan1/11/set"
payload_on: "1"
payload_off: "0"
qos: 1
retain: true

# --- Brightness (Channel 13: 0..1000) <-> 0..255 in HA ---
brightness_state_topic: "livingroomfan1/13/get"
brightness_command_topic: "livingroomfan1/13/set"

brightness_value_template: >
{# 0..1000 (OBK) -> 0..255 (HA) #}
{% set v = value | int %}
{{ (v * 255 / 1000) | round(0) }}

brightness_command_template: >
{# 0..255 (HA) -> 0..1000 (OBK) #}
{% set b = value | int %}
{% if b <= 0 %}
0
{% elif b >= 255 %}
1000
{% else %}
{{ (b * 1000 / 255) | round(0) }}
{% endif %}

# --- Color temperature: Channel 12 (0..1000 warm->cool) ---
# Map to mired range ~2700K..6500K
color_temp_state_topic: "livingroomfan1/12/get"
color_temp_command_topic: "livingroomfan1/12/set"

# These should match the range you want in HA
min_mireds: 153 # ~6500K (cool)
max_mireds: 370 # ~2700K (warm)

color_temp_value_template: >
{# 0..1000 (0=warm,1000=cool) -> mireds (370..153) #}
{% set v = value | int %}
{% set min_m = 153 %}
{% set max_m = 370 %}
{% set v_clamped = [1000, [0, v] | max] | min %}
{{ (max_m - (v_clamped * (max_m - min_m) / 1000)) | round(0) }}

color_temp_command_template: >
{# mireds (370..153) -> 0..1000 (0=warm,1000=cool) #}
{% set m = value | int %}
{% set min_m = 153 %}
{% set max_m = 370 %}
{% set m_clamped = [max_m, [min_m, m] | max] | min %}
{{ ((max_m - m_clamped) * 1000 / (max_m - min_m)) | round(0) }}

# Optional: same device grouping as the fan
device:
identifiers: ["livingroomfan1"]
manufacturer: "OpenBeken"
model: "Tuya Fan (BK7231)"
name: "Living Room Fan 1"
configuration_url: "http://192.168.1.213/index"
```

Carro Ceiling Fan OpenBeken Config: WBR3 RTL8720CF TuyaMCU, DPIDs, Light & Fan Control

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