DCL777/sensors2mqtt

Adding support for the JSN-SR04T Ultrasonic sensor

Closed this issue · 8 comments

geccko commented

Is it possible to add support for the JSN-SR04T Ultrasonic sensor ? I created a new file for this sensor, could you merge it?

Thanks

DCL777 commented

Yes, i can add it. Can you send me the file? Witch mode do you use? i would prefer UART TX & RX to be compatible with my structure.

geccko commented

Hi @DCL777

How do I send you the file? Thanks

DCL777 commented

Hi, you can drag and drop our files here in your message or pasting them.

geccko commented

Hi,

Here is the file that I added under the "sensors/Generic_Ultrasonic" directory. I used a JSN-SR04T, for example: https://aliexpress.com/item/1005003683104654.html

And the config:
Sensors:
Generic_Ultrasonic:

  • platform: RPI
    echo_pin: 21
    trigger_pin: 20
    sample_size: 10
    update_interval: 10 # seconds 10,30,60, 300 (5min) , 900 (15min), 3600 (1h) , 10800 (3h), 21600 (6h) , 43200 (12h)
    mqtt_sub_dir: height
    function: ultrasonic

RPI_Generic_Ultrasonic.txt

DCL777 commented

Hi,
I added it and changed it a little bit to be in-line with the other sensors. I don't have a sensor yet. Can you test it?
All feedback is welcome.
Is the output stable? Since Linux is not a real-time platform, i could happened that there is an additional delay.
If it's not stable enough, we should look to the RS232 mode to have a accurate measurement.
Kind regards,
Dries

geccko commented

Hi @DCL777.

Thanks very much for including this sensor. I made some changes to the code:

Line 79 change to:
distance = (pulse_duration_average * self.scale_factor)

Line 82 check identation and change to:
if distance > self.output_value_min and distance < self.output_value_max:

Line 80 change to:
distance = round(distance, self.decimal_points)

It's seems to be working perfectly and the output is very stable, I will continue testing it.

2022-07-19 20:33:21,376 - INFO - MQTT: homeassistant/ultrasonic/height 0
2022-07-19 20:33:30,008 - INFO - EVENT = 30
2022-07-19 20:33:31,211 - INFO - MQTT: homeassistant/ultrasonic/height 336.24
2022-07-19 20:33:40,009 - INFO - EVENT = 10
2022-07-19 20:33:41,246 - INFO - MQTT: homeassistant/ultrasonic/height 395.89
2022-07-19 20:33:50,009 - INFO - EVENT = 10
2022-07-19 20:33:51,031 - INFO - MQTT: homeassistant/ultrasonic/height 25.11
2022-07-19 20:34:00,009 - INFO - EVENT = 60

Kind regards!

DCL777 commented

Thanks.
It's fixed. + i added a timeout
See HISTORY.md file for more info.

geccko commented

Thanks so much !!!