I think I’ll try with arduino as well, to put the optical device on the arduino and try to read from there, see if I get a different result
Hi all,
In the past I used a Rpi with USB-IR to read out my Kamstrup 603 meter.
Since my Pi died I want to do this with an ESP. (And preferred ESPHome)
This should be possible with KMP (Kamstrup Meter Protocol [KMP] - ESPHome - Smart Home Made Simple)
Kitlist:
- ESP32-S3
- IR-eye (https://nl.aliexpress.com/item/1005004605395145.html)
First I hoped that I could read my USB device through the second USB-C port of the ESP32-S3.
This wasn’t working that well. That’s the reason I bought the serial IR-eye.
The IR-eye is connected to the ESP32-S3 by the following:
DCD – 5v
RXD – GPIO17
TXD – GPIO18
GND – GND
I see light in the eye of the IR-device when I check with my phone camera.
Of course I already switch TXD and RXD for testing.
Also other baud rates are tested.
The error I get is :
Received invalid message (prefix mismatch received 0x80, expected 0x40)
If I do debug on the UART, I get the following response:
[17:10:41][D][uart_debug:158]: >>> "\x80?\x10\e\xF9\x00<\x00D\x00c\x00q\x03\xE9\x03\xEC\x1A\xAA\r"
[17:10:42][D][uart_debug:158]: <<< "\x80?\x10\e\xF9\x00<\x00D\x00c\x00q\x03\xE9\x03\xEC\x1A\xAA\r"
The ESP-Home config is the following:
uart:
- id: uart_bus
tx_pin: GPIO17
rx_pin: GPIO18
baud_rate: 1200
parity: NONE
stop_bits: 2
sensor:
- platform: kamstrup_kmp
heat_energy:
name: Heat Energy
power:
name: Heat Power
temp_diff:
name: Heat Temperature Difference
flow:
name: Heat Flow
custom:
- name: Custom Heat Energy
command: 0x003C
- name: Custom Heat Power
command: 0x0050
update_interval: 10s
I do something wrong over here. But I don’t know what.
Have you guys got any idea?
I also tried to transform serial to IP (GitHub - oxan/esphome-stream-server: Stream server (serial-to-wifi bridge) for ESPHome),
and then read out the values with HA-Kamstrup_403 (ha-kamstrup_403/README.md at e6a717a62ff9f94be3619f7d2981ec0c4f0465cf · golles/ha-kamstrup_403 · GitHub)
This had no effect and resulted in the same logging.
Config for that one is:
external_components:
- source: github://oxan/esphome-stream-server
stream_server:
uart_id: uart_bus
port: 1234
It seems like the solution with ESP-Home is not working with the MC603.
I found this solution: GitHub - mickkn/ESPxSerialBridge: Serial Bridge for Kamstrup 403 Home Assistents Integration
And integrated with this solution: GitHub - golles/ha-kamstrup_403: Custom component that integrates the Kamstrup 403 heating system into Home Assistant. This component does also support a few other heating systems
Works flawless
Here am I again 
I was wondering why the other solution was working well, and this one didn’t.
Key-part is that RX buffer size is needed at the value of 1024.
Maybe this is something that can be added to the page of the integration?
I also have added the full config with all options.
Credits to @golles where I found alot of info in his coding for getting this complete.
The dates are not imported correctly from the date-objects, those are getting a date in 1970 or something. I think it is the format which need to be changed.
The kit of @cfeenstra is still not working. Maybe the issue are the IR-LED and the photo-LED, but I used the 940nm ones. So it should be right.
https://nl.aliexpress.com/item/1005005371811048.html
If someone knows if these are wrong, please let me know and I order others to test. In the mean-time I use another reading head from AliExpress.
https://nl.aliexpress.com/item/1005005630726621.html?gatewayAdapt=glo2nld
Hereby the full ESP-Home config:
uart:
baud_rate: 1200
stop_bits: 2
tx_pin:
number: GPIO15
inverted: true
rx_pin:
number: GPIO13
inverted: true
rx_buffer_size: 1024
sensor:
- platform: kamstrup_kmp
heat_energy:
name: Heat Energy
device_id: kamstrup
icon: "mdi:radiator"
device_class: "energy"
state_class: "total_increasing"
power:
name: Heat Power
device_id: kamstrup
icon: "mdi:flash"
temp_diff:
name: Heat Temperature Difference
device_id: kamstrup
icon: "mdi:thermometer"
flow:
name: Heat Flow
icon: "mdi:water"
device_id: kamstrup
custom:
- name: Heat Energy (E1)
device_id: kamstrup
command: 0x003C
unit_of_measurement: "GJ"
icon: "mdi:radiator"
device_class: "energy"
state_class: "total_increasing"
- name: Heat Energy to Gas
device_id: kamstrup
command: 0x003C
unit_of_measurement: "m³"
icon: "mdi:gas-burner"
device_class: "gas"
state_class: "total_increasing"
- name: Cooling Energy
device_id: kamstrup
command: 0x003F
icon: "mdi:snowflake"
device_class: "energy"
state_class: "total_increasing"
unit_of_measurement: "GJ"
- name: Custom Heat Power
device_id: kamstrup
command: 0x0050
icon: "mdi:flash"
device_class: "power"
state_class: "measurement"
unit_of_measurement: "kW"
- name: Temp1
device_id: kamstrup
command: 0x0056
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: Temp2
device_id: kamstrup
command: 0x0057
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: Tempdiff
device_id: kamstrup
command: 0x0059
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: Flow
device_id: kamstrup
command: 0x004A
icon: "mdi:water"
state_class: "measurement"
unit_of_measurement: "l/h"
- name: Volume
device_id: kamstrup
command: 0x0044
icon: "mdi:water"
state_class: "total_increasing"
unit_of_measurement: "m³"
- name: MinFlow_M
device_id: kamstrup
command: 0x008D
icon: "mdi:water"
state_class: "measurement"
unit_of_measurement: "l/h"
- name: MaxFlow_M
device_id: kamstrup
command: 0x008B
icon: "mdi:water"
state_class: "measurement"
unit_of_measurement: "l/h"
- name: MinPower_M
device_id: kamstrup
command: 0x0091
icon: "mdi:flash"
device_class: "power"
state_class: "measurement"
unit_of_measurement: "kW"
- name: MaxPower_M
device_id: kamstrup
command: 0x008F
icon: "mdi:flash"
device_class: "power"
state_class: "measurement"
unit_of_measurement: "kW"
- name: AvgTemp1_M
device_id: kamstrup
command: 0x0095
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: AvgTemp2_M
device_id: kamstrup
command: 0x0096
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: MinFlow_Y
device_id: kamstrup
command: 0x007E
icon: "mdi:water"
state_class: "measurement"
unit_of_measurement: "l/h"
- name: MaxFlow_Y
device_id: kamstrup
command: 0x0096
icon: "mdi:water"
state_class: "measurement"
unit_of_measurement: "l/h"
- name: MinPower_Y
device_id: kamstrup
command: 0x0082
icon: "mdi:flash"
device_class: "power"
state_class: "measurement"
unit_of_measurement: "kW"
- name: MaxPower_Y
device_id: kamstrup
command: 0x0080
icon: "mdi:flash"
device_class: "power"
state_class: "measurement"
unit_of_measurement: "kW"
- name: AvgTemp1_Y
device_id: kamstrup
command: 0x0092
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: AvgTemp2_Y
device_id: kamstrup
command: 0x0093
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
unit_of_measurement: "°C"
- name: Temp1xm3
device_id: kamstrup
command: 0x0061
icon: "mdi:thermometer"
state_class: "measurement"
unit_of_measurement: "°C"
- name: Temp2xm3
device_id: kamstrup
command: 0x006E
icon: "mdi:thermometer"
state_class: "measurement"
unit_of_measurement: "°C"
- name: Infoevent
device_id: kamstrup
command: 0x0063
icon: "mdi:eye"
state_class: "measurement"
entity_category: "diagnostic"
accuracy_decimals: 0
- name: Infoevent counter
device_id: kamstrup
command: 0x0071
icon: "mdi:eye"
state_class: "measurement"
entity_category: "diagnostic"
accuracy_decimals: 0
- name: Serial number
device_id: kamstrup
command: 0x03E9
icon: "mdi:barcode"
state_class: "measurement"
entity_category: "diagnostic"
accuracy_decimals: 0
- name: HourCounter
device_id: kamstrup
command: 0x03EC
icon: "mdi:timer-sand"
state_class: "total_increasing"
entity_category: "diagnostic"
unit_of_measurement: "h"
- name: MinFlowDate_M
device_id: kamstrup
command: 0x008C
icon: "mdi:calendar"
device_class: "date"
accuracy_decimals: 0
- name: MaxFlowDate_M
device_id: kamstrup
command: 0x008A
icon: "mdi:calendar"
device_class: "date"
accuracy_decimals: 0
- name: MinPowerDate_M
device_id: kamstrup
command: 0x0090
icon: "mdi:calendar"
device_class: "date"
- name: MaxPowerDate_M
device_id: kamstrup
command: 0x008E
icon: "mdi:calendar"
device_class: "date"
accuracy_decimals: 0
- name: MinFlowDate_Y
device_id: kamstrup
command: 0x007D
icon: "mdi:calendar"
device_class: "date"
accuracy_decimals: 0
- name: MaxFlowDate_Y
device_id: kamstrup
command: 0x007B
icon: "mdi:calendar"
device_class: "date"
accuracy_decimals: 0
- name: MinPowerDate_Y
device_id: kamstrup
command: 0x0081
icon: "mdi:calendar"
device_class: "date"
accuracy_decimals: 0
- name: MaxPowerDate_Y
device_id: kamstrup
command: 0x007F
icon: "mdi:calendar"
device_class: "timestamp"
accuracy_decimals: 2
1 Like