I am using this Temperature Controller Module for my Bambu Lab Chamber heater. I would like to use ESPHome on it, instead of Sinilink App
I have flashed the ESP8285 without a problem to ESPHome.
Does someone already has write a program to read/write the modus data.
Model: XY-ST30-W or XY-ST10-W
If you can’t find the modbus registers for the device, you have to probe little bit.
I managed to get all registers from another XY-device:
slave address 1
Uart 115200 bps, 8N1
single holding registers starting from 0x0000
I have found a semi similar product. At the end of the datasheet the Modbus data structure is described.
I have no experience in programming, hopefully someone can help with a basic code then I can start testing the each registers.
Did you flash the chip through the pin header? I mean do you know the uart pins used there?
Yes, I flashed through the pin header holes.
Try if you get any response:
uart:
tx_pin: GPIO1
rx_pin: GPIO3
baud_rate: 115200
modbus:
id: modbus1
modbus_controller:
- id: modbus_device
address: 0x1 ## address of the Modbus slave device on the bus
modbus_id: modbus1
sensor:
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Temp"
register_type: holding
address: 0x0003 ## address of the register inside the Modbus slave device
unit_of_measurement: "C"
value_type: S_WORD
and set logger baudrate to 0
logger:
baud_rate: 0
Temp sensor is working, actual temp on display is 21.2
Nice.
Add this to your temp sensor:
filters:
- multiply: 0.1
Then just copy/paste the sensors for addresses you are interested in (hoping that the registers of your device are same with the one you linked).
Most of the sensors I have working.
But I am struggeling getting the relay to work in HA, I tried lots of different codes but notting works.
If I manual press the relay On/Off button on the device it show the correct status in HA.
switch:
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x0000
name: "Relay"
skip_updates: 5
use_write_multiple: false
bitmask: 1
icon: "mdi:toggle-switch"
Is that bitmask required?
If you want to see what’s going on, add debug to your uart config and see what is sent when you change the state in HA and what’s received when you change state on the device.
uart:
baud_rate: 115200
debug:
direction: BOTH
UART Debug when Pressing ON/OFF Button on Device.
[20:48:43.390][D][switch:065]: ‘Relay’: Sending state ON
[20:48:43.390][D][uart_debug:114]: <<< 01:03:02:00:01:79:84
[20:48:48.366][D][uart_debug:114]: >>> 01:03:00:00:00:01:84:0A
[20:48:48.481][D][uart_debug:114]: <<< 01:03:02:00:01:79:84
[20:48:54.339][D][uart_debug:114]: >>> 01:03:00:00:00:01:84:0A
[20:48:54.354][D][switch:065]: ‘Relay’: Sending state OFF
[20:48:54.454][D][uart_debug:114]: <<< 01:03:02:00:00:B8:44
UART Debug when Pressing ON/OFF Button in HA.
[20:50:30.135][D][switch:022]: ‘Relay’ Turning ON.
[20:50:30.137][D][switch:065]: ‘Relay’: Sending state ON
[20:50:30.242][D][uart_debug:114]: >>> 01:06:00:00:FF:FF:88:7A
[20:50:30.500][D][uart_debug:114]: >>> 01:06:00:00:FF:FF:88:7A
[20:50:30.694][D][uart_debug:114]: >>> 01:06:00:00:FF:FF:88:7A
[20:50:30.709][D][uart_debug:114]: <<< 01:06:00:00:FF:FF:88:7A
[20:50:30.823][D][uart_debug:114]: >>> 01:03:00:00:00:01:84:0A
[20:50:31.001][D][uart_debug:114]: >>> 01:03:00:00:00:01:84:0A
[20:50:31.014][D][switch:065]: ‘Relay’: Sending state OFF
[20:50:31.116][D][uart_debug:114]: <<< 01:03:02:00:00:B8:44
The problem is when switch to ON in HA it immediately turn OFF again without switching the relay.
No, the problem is that it never sends ON request to the device. Your visual switch state on HA is completely irrelevant.
This is incorrect:
it should be 01:06:00:00:00:01…
Can’t get it to work.
switch:
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x0000
name: "Relay"
skip_updates: 5
use_write_multiple: false
write_lambda: |-
payload.push_back(0x01);
payload.push_back(0x06);
payload.push_back(0x00);
payload.push_back(0x00);
if (x) {
payload.push_back(0x00);
payload.push_back(0x01);
} else {
payload.push_back(0x00);
payload.push_back(0x00);
}
return true;
lambda: |-
return (x == 1);
UART Log:
[switch:022]: ‘Relay’ Turning ON.
[switch:065]: ‘Relay’: Sending state ON
[uart_debug:114]: >>> 01:06:00:00:00:01:48:0A
[uart_debug:114]: >>> 01:06:00:00:00:01:48:0A
[uart_debug:114]: >>> 01:06:00:00:00:01:48:0A
[uart_debug:114]: <<< 01:06:00:00:00:01:48:0A
[uart_debug:114]: >>> 01:03:00:00:00:01:84:0A
[switch:065]: ‘Relay’: Sending state OFF
Too vague.
Explain what happens. And post the logs always with timing.
What we really know is that device replies to read request with 0x0000 (off) and 0x0001(on).
Now your lambda matches to that. Before your switch was using FFFF for ON (esphome default).
But we don’t know for sure if that register is accepting write request in the first place.
Or there is some weird logic on that device that it is looking for different write command that it uses for response. Could be FFFF, FF00, 000A for example.
Ideally any other than 0000 would be ON, but world is not ideal…
Finally find some time to troubleshoot.
I have made it working, the ON/OFF address is: 0x0011
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Relay Control"
address: 0x0011
register_type: holding
use_write_multiple: false
icon: "mdi:power-cycle"
# SENDING the command to 0x0011
write_lambda: |-
payload.push_back(0x01);
payload.push_back(0x06);
payload.push_back(0x00);
payload.push_back(0x11);
if (x) {
payload.push_back(0x00);
payload.push_back(0x00);
} else {
payload.push_back(0x00);
payload.push_back(0x01);
}
return true;
# MATCHING the UI toggle to the status at 0x0000
lambda: |-
return (id(relay_raw_state).state > 0);
That makes sense! 
Hi Rufan,
Would you mind posting your entire yaml for the temp controller?
I am also trying to make it work and have some difficulties.
Thank you very much.
This is my code.
For sure it can be improved as I am not a programmer.
Thanks to Karosm and ChatGPT
substitutions:
# General Settings
device_name: xyst30w-thermostat
friendly_name: Sinilink Thermostat
baud_rate: "9600"
temp_multiplier: "0.1"
esphome:
name: ${device_name}
esp8266:
board: esp01_1m
restore_from_flash: true
logger:
level: WARN #DEBUG
# Disable logging via UART, since we're using this for modbus communication
baud_rate: 0 #Serial logging can be disabled by setting baud_rate: 0.
# Enable status LED
status_led:
pin:
number: GPIO2
inverted: true
# Enable Home Assistant API
api:
encryption:
key: "......"
ota:
- platform: esphome
password: "......."
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
min_auth_mode: WPA2
power_save_mode: none
fast_connect: on
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "xyst30w-thermostat"
password: "......."
uart:
- id: uart_bus
tx_pin: GPIO1
rx_pin: GPIO3
baud_rate: ${baud_rate}
stop_bits: 1
parity: NONE
debug:
direction: BOTH
dummy_receiver: true
modbus:
send_wait_time: 1s
uart_id: uart_bus
id: modbus1
modbus_controller:
- id: modbus_device
address: 0x1 ## address of the Modbus slave device on the bus
modbus_id: modbus1
#command_throttle: 0ms
setup_priority: -10
update_interval: 10s
captive_portal:
sensor:
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Relay Cycle Status"
register_type: holding
address: 0x0000
id: relay_raw_state
icon: "mdi:state-machine"
entity_category: diagnostic
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x0001
name: "System Status"
icon: "mdi:information-outline"
entity_category: diagnostic
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Current Temperature"
device_class: temperature
state_class: measurement
register_type: holding
address: 0x0003
unit_of_measurement: "°C"
value_type: S_WORD
accuracy_decimals: 1
filters:
- multiply: ${temp_multiplier}
icon: "mdi:thermometer"
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x0008
name: "High Temp Alarm"
icon: "mdi:temperature-celsius"
entity_category: diagnostic
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x0009
name: "Low Temp Alarm"
icon: "mdi:temperature-celsius"
entity_category: diagnostic
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x000C
name: "Alarm Status"
#icon: "mdi:"
entity_category: diagnostic
number:
# Using entity_category: config puts these in a separate section in HA
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Threshold Start"
address: 0x0006
icon: "mdi:play-circle-outline"
min_value: 20
max_value: 60
step: 0.1
lambda: "return x * 0.1;"
write_lambda: "return x * 10.0;"
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Threshold Stop"
address: 0x0007
icon: "mdi:stop-circle-outline"
min_value: 20
max_value: 60
step: 0.1
lambda: "return x * 0.1;"
write_lambda: "return x * 10.0;"
switch:
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Relay Control"
address: 0x0011
register_type: holding
use_write_multiple: false
icon: "mdi:power-cycle"
# SENDING the command to 0x0011
write_lambda: |-
payload.push_back(0x01);
payload.push_back(0x06);
payload.push_back(0x00);
payload.push_back(0x11);
if (x) {
payload.push_back(0x00);
payload.push_back(0x00);
} else {
payload.push_back(0x00);
payload.push_back(0x01);
}
return true;
# MATCHING the UI toggle to the status at 0x0000
lambda: |-
return (id(relay_raw_state).state > 0);
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Buzzer"
address: 0x000D
register_type: holding
use_write_multiple: false
entity_category: diagnostic
#icon: "mdi:power-cycle"
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "High Temp Alarm Enable"
address: 0x000E
register_type: holding
use_write_multiple: false
entity_category: diagnostic
icon: "mdi:power-cycle"
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Low Temp Alarm Enable"
address: 0x000F
register_type: holding
use_write_multiple: false
entity_category: diagnostic
icon: "mdi:power-cycle"
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "BL"
address: 0x0015
register_type: holding
use_write_multiple: false
entity_category: diagnostic
icon: "mdi:power-cycle"
button:
# this provides for a possibility to restart from the web console or Home automation should we ever need it
- platform: restart
name: "Restart"
- platform: safe_mode
name: "Restart Safe Mode"
# Web server for manual control (optional)
web_server:
port: 80
#version: 1
Hi Rufan,
thank you very much!
I highly appreciate it, actually there are a couple of things I can learn from your code.
Thanks for sharing. Confirmed working on XY-ST10-W (with XY-WFPOW).