Hey guys!
I am trying to configure a new project: a scale to measure the weight of objects. In my case a gas cylinder. If the gas cylinder is heavy, then we still have gas in there!
I am using a hx711 sensor with 4 load cells:
I have installed the load cells on a small manhole cover:
I also used this schematic to connect all the wiring (the only difference is that I am using a NodeMCU with EspHome):
esphome:
name: sensor_cilindro_gas_1
platform: ESP8266
board: d1_mini
wifi:
ssid: !secret WiFiSSID
password: !secret WiFiPassword
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Botijao Gas Fallback Hotspot"
password: "MASKED"
captive_portal:
# Enable logging
logger:
# Enable Home Assistant API
api:
ota:
sensor:
- platform: hx711
name: "Cilindro de Gas 1"
dout_pin: D1
clk_pin: D2
gain: 128
icon: 'mdi:scale'
update_interval: 10s
accuracy_decimals: 2
filters:
- median:
window_size: 6
send_every: 6
- calibrate_linear:
- 321194.38 -> 0
- 326688 -> 1.29
- 351057.33 -> 73
unit_of_measurement: kg
Despite all this, the sensor are working in a very strange (I would say spooky haha) way. The reads keep changing all the time. The differences are high. Take a look below:
INFO Reading configuration /config/esphome/sensor_cilindro_gas_1.yaml...
INFO Starting log output from sensor_cilindro_gas_1.local using esphome API
INFO Connecting to sensor_cilindro_gas_1.local:6053 (MASKED)
INFO Successfully connected to sensor_cilindro_gas_1.local
[07:17:18][I][app:105]: ESPHome version 1.15.3 compiled on Dec 18 2020, 23:33:53
[07:17:18][C][wifi:443]: WiFi:
[07:17:18][C][wifi:303]: SSID: [redacted]
[07:17:18][C][wifi:304]: IP Address: MASKED
[07:17:18][C][wifi:306]: BSSID: [redacted]
[07:17:18][C][wifi:307]: Hostname: 'sensor_cilindro_gas_1'
[07:17:18][C][wifi:311]: Signal strength: -75 dB ▂▄▆█
[07:17:18][C][wifi:315]: Channel: 6
[07:17:18][C][wifi:316]: Subnet: MASKED
[07:17:18][C][wifi:317]: Gateway: MASKED
[07:17:18][C][wifi:318]: DNS1: MASKED
[07:17:18][C][wifi:319]: DNS2: MASKED
[07:17:18][C][logger:185]: Logger:
[07:17:18][C][logger:186]: Level: DEBUG
[07:17:18][C][logger:187]: Log Baud Rate: 115200
[07:17:18][C][logger:188]: Hardware UART: UART0
[07:17:18][C][hx711:021]: HX711 'Cilindro de Gas 1'
[07:17:18][C][hx711:021]: Unit of Measurement: 'kg'
[07:17:18][C][hx711:021]: Accuracy Decimals: 2
[07:17:18][C][hx711:021]: Icon: 'mdi:scale'
[07:17:18][C][hx711:022]: DOUT Pin: GPIO5 (Mode: INPUT)
[07:17:18][C][hx711:023]: SCK Pin: GPIO4 (Mode: OUTPUT)
[07:17:18][C][hx711:024]: Update Interval: 10.0s
[07:17:18][C][captive_portal:169]: Captive Portal:
[07:17:18][C][ota:029]: Over-The-Air Updates:
[07:17:18][C][ota:030]: Address: sensor_cilindro_gas_1.local:8266
[07:17:18][C][api:095]: API Server:
[07:17:18][C][api:096]: Address: sensor_cilindro_gas_1.local:6053
[07:17:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 333199
[07:17:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 331956
[07:17:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 333005
[07:17:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 331441
[07:18:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 332222
[07:18:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 332152
[07:18:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 22.70526 kg with 2 decimals of accuracy
[07:18:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 332406
[07:18:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 332254
[07:18:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 331806
[07:18:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 330852
[07:19:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 332332
[07:19:00][I][ota:046]: Boot seems successful, resetting boot loop counter.
[07:19:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 331803
[07:19:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 22.29773 kg with 2 decimals of accuracy
[07:19:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 332857
[07:19:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 331662
[07:19:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 330762
[07:19:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 331081
[07:20:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 332121
[07:20:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 329955
[07:20:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 20.58850 kg with 2 decimals of accuracy
[07:20:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 331862
[07:20:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 332660
[07:20:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 331237
[07:20:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 330377
[07:21:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 329207
[07:21:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 326778
[07:21:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 19.12323 kg with 2 decimals of accuracy
[07:21:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 325756
[07:21:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 325989
[07:21:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 326746
[07:21:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 325640
[07:22:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 326373
[07:22:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 326593
[07:22:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 7.11572 kg with 2 decimals of accuracy
[07:22:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 326612
[07:22:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 326861
[07:22:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 326663
[07:22:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 327124
[07:23:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 326610
[07:23:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 327237
[07:23:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 8.62378 kg with 2 decimals of accuracy
[07:23:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 327216
[07:23:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 327168
[07:23:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 327490
[07:23:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 327591
[07:24:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 327550
[07:24:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 327982
[07:24:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 10.59131 kg with 2 decimals of accuracy
[07:24:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 327613
[07:24:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 327842
[07:24:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 327943
[07:24:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 327627
[07:25:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 328135
[07:25:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 328170
[07:25:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 11.55817 kg with 2 decimals of accuracy
[07:25:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 328175
[07:25:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 328321
[07:25:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 327820
[07:25:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 328479
[07:26:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 329879
[07:26:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 330974
[07:26:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 12.87549 kg with 2 decimals of accuracy
[07:26:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 332724
[07:26:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 333769
[07:26:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 333928
[07:26:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 333745
[07:27:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 333625
[07:27:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 332687
[07:27:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 26.59357 kg with 2 decimals of accuracy
[07:27:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 331891
[07:27:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 333011
[07:27:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 332817
[07:27:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 332491
[07:28:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 332001
[07:28:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 332402
[07:28:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 23.37878 kg with 2 decimals of accuracy
[07:28:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 332009
[07:28:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 330978
[07:28:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 332560
[07:28:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 332062
[07:29:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 331788
[07:29:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 331412
[07:29:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 21.95636 kg with 2 decimals of accuracy
[07:29:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 331653
[07:29:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 331899
[07:29:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 331834
[07:29:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 332009
[07:30:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 330595
[07:30:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 332422
[07:30:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 21.87335 kg with 2 decimals of accuracy
[07:30:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 331578
[07:30:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 331405
[07:30:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 331414
[07:30:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 331207
[07:31:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 331090
[07:31:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 330657
[07:31:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 20.41846 kg with 2 decimals of accuracy
[07:31:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 332146
[07:31:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 331091
[07:31:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 331715
[07:31:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 330481
[07:32:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 329261
[07:32:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 326337
[07:32:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 19.06873 kg with 2 decimals of accuracy
[07:32:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 326062
[07:32:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 325667
[07:32:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 326547
[07:32:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 326853
[07:33:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 326308
[07:33:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 326455
[07:33:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 7.63611 kg with 2 decimals of accuracy
[07:33:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 326785
[07:33:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 326836
[07:33:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 326792
[07:33:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 327149
[07:34:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 326900
[07:34:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 326887
[07:34:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 8.88202 kg with 2 decimals of accuracy
[07:34:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 327396
[07:34:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 327223
[07:34:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 327570
[07:34:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 328058
[07:35:00][D][hx711:031]: 'Cilindro de Gas 1': Got value 327687
[07:35:10][D][hx711:031]: 'Cilindro de Gas 1': Got value 327916
[07:35:10][D][sensor:092]: 'Cilindro de Gas 1': Sending state 10.87292 kg with 2 decimals of accuracy
[07:35:20][D][hx711:031]: 'Cilindro de Gas 1': Got value 328089
[07:35:30][D][hx711:031]: 'Cilindro de Gas 1': Got value 328262
[07:35:40][D][hx711:031]: 'Cilindro de Gas 1': Got value 327941
[07:35:50][D][hx711:031]: 'Cilindro de Gas 1': Got value 328428
So… I am trying to find what I have to do to fix this. Anyone here can help me finishing this one?
There is absolutely nothing on the scale. I have tried to calibrate the scale via code but the values keep changing a lot!