Hi,
I have problem with battery percentage mapping in range (2.5 to 3.65) from 0 to 100%
with using a filter, calibrate_linear: ?
sensor:
- platform: adc
pin: 34
attenuation: 0db
name: "SolarSoilSensorA Voltage Battery"
id: "VCC"
update_interval: 2s
filters:
- multiply : 5
- calibrate_linear:
- 0.0 -> 0.35
- 0.5 -> 0.79
- 1.0 -> 1.22
- 1.5 -> 1.65
- 2.0 -> 2.09
- 2.5 -> 2.52
- 3.0 -> 2.95
- 3.5 -> 3.38
- 4.0 -> 3.82
- platform: template
name: "SolarSoilSensorA Level Battery"
unit_of_measurement: '%'
accuracy_decimals: 2
id: ${device_name}_battery
update_interval: 10s
lambda: |-
return ((id(VCC).state /3.65) * 100.00); ?
#filters: ?
#- calibrate_linear: ?
# - 10 -> 100 ?
#- 20 -> 100 ?
https://diysolarforum.com/threads/lifepo4-voltage-chart.3156/
| Capacity % |
Pack Voltage |
Cell Voltage |
| 100% |
14.60 |
3.65 |
| 99% |
14.45 |
3.61 |
| 95% |
13.87 |
3.46 |
| 90% |
13.30 |
3.32 |
| 80% |
13.25 |
3.31 |
| 70% |
13.20 |
3.30 |
| 60% |
13.17 |
3.29 |
| 50% |
13.13 |
3.28 |
| 40% |
13.10 |
3.27 |
| 30% |
13.00 |
3.25 |
| 20% |
12.90 |
3.22 |
| 17% |
12.80 |
3.20 |
| 14% |
12.50 |
3.12 |
| 9% |
12.00 |
3.00 |
| 0% |
10.00 |
2.50 |
% Level Battery has a non-linear course
I need to calibrate, map percentages LiFePo4 Battery as in the table above.
In platform: adc is filters - calibrate_linear: and it works fine.
how to map nonlinear this way in % ? in - platform: template
return ((id(VCC).state /3.65) * 100.00);
the line above is not giving the correct values:/
filters:
- calibrate_linear:
- 2.50 -> 0%
- 3.00 -> 9%
- 3.12 -> 14%
- 3.20 -> 17%
- 3.22 -> 20%
- 3.25 -> 30%
...... ?????
lambda: |-
return ((id(VCC).state /3.65) * 100.00); ?
id(VCC) to map value -> return % value ?
tom_l
4
It’s still very difficult to understand what you want. Do you want to replace the calibration table with an equation?
I don’t want to replace it.
I want map voltage value to % value for LiFePo4 Battery.
lambda: |-
return ((id(VCC).state /3.65) * 100.00);
Now i have it and is not giving the correct values
…
I need get id(VCC).state ->> map to % value and return correct value to homeassistant (% level of battery)
tom_l
6
You’re already converting voltage to % capacity in the calibrate linear table. Why do you need the equation?
It was just an example of how I would see it,
But it probably doesn’t work,
lambda: |-
return ((id(VCC).state /3.65) * 100.00); ?
This is also not required, I just found such an example on the forum
Now I have this code
sensor:
- platform: adc
pin: 34
attenuation: 0db
name: "SolarSoilSensorA Voltage Battery"
id: "VCC"
update_interval: 2s
filters:
- multiply : 5
- calibrate_linear:
- 0.0 -> 0.35
- 0.5 -> 0.79
- 1.0 -> 1.22
- 1.5 -> 1.65
- 2.0 -> 2.09
- 2.5 -> 2.52
- 3.0 -> 2.95
- 3.5 -> 3.38
- 4.0 -> 3.82
- platform: template
name: "SolarSoilSensorA Level Battery"
accuracy_decimals: 0
#id: ${device_name}_battery
id: "level_battery"
update_interval: 2s
#lambda: |-
#return ((id(VCC).state /3.65) * 100.00);
lambda: return (id(VCC).state);
filters:
- calibrate_linear:
- 2.50 -> 0.00
- 3.00 -> 9.00
- 3.12 -> 14.00
- 3.20 -> 17.00
- 3.22 -> 20.00
- 3.25 -> 30.00
- 3.27 -> 40.00
- 3.28 -> 50.00
- 3.29 -> 60.00
- 3.30 -> 70.00
- 3.31 -> 80.00
- 3.32 -> 90.00
- 3.46 -> 95.00
- 3.61 -> 99.00
- 3.65 -> 100.00
unit_of_measurement: '%'
But the values are not correct:|
e.g.
2.50v = -30%
3.00v = 24%
3.30v = 57%
3.65v = 95%
Why is it not work?
I do not know how to do it .
What filter is correct for this?
I want to read the real level of battery Lifepo4 charge in 0 to 100%
again…
Here is the adc calibration, without it the readings are wrong!
sensor:
- platform: adc
pin: 34
attenuation: 11db
name: "SolarSoilSensorA Voltage Battery"
id: "VCC"
update_interval: 2s
filters:
- multiply : 5
- calibrate_linear:
- 0.00 -> 0.60
- 0.10 -> 0.68
- 0.20 -> 0.75
- 0.30 -> 0.85
- 0.40 -> 0.94
- 0.50 -> 1.01
- 0.60 -> 1.09
- 0.70 -> 1.19
- 0.80 -> 1.27
- 0.90 -> 1.35
- 1.00 -> 1.45
- 1.50 -> 1.86
- 2.00 -> 2.29
- 2.10 -> 2.38
- 2.20 -> 2.46
- 2.30 -> 2.56
- 2.40 -> 2.63
- 2.50 -> 2.70
- 2.60 -> 2.78
- 2.70 -> 2.87
- 2.80 -> 2.95
- 2.90 -> 3.05
- 3.00 -> 3.14
- 3.50 -> 3.56
- 4.00 -> 3.98
In the range of 0 - 4 volts the voltage is correct. For calibration, I use a laboratory power supply + true rms Multimeter.
Then I take the calibrated voltage and map / calibrate to percentages…
- platform: template
name: "SolarSoilSensorA Level Battery"
accuracy_decimals: 2
#id: ${device_name}_battery
id: "level_battery"
update_interval: 2s
#lambda: |-
#return ((id(VCC).state /3.65) * 100.00);
lambda: return (id(VCC).state);
filters:
- calibrate_linear:
- 2.50 -> 0.00
- 3.00 -> 9.00
- 3.12 -> 14.00
- 3.20 -> 17.00
- 3.22 -> 20.00
- 3.25 -> 30.00
- 3.27 -> 40.00
- 3.28 -> 50.00
- 3.29 -> 60.00
- 3.30 -> 70.00
- 3.31 -> 80.00
- 3.32 -> 90.00
- 3.46 -> 95.00
- 3.61 -> 99.00
- 3.65 -> 100.00
unit_of_measurement: '%'
The values are correct for a lifepo4 battery but the values at the output of this filter are different … not correct…
I also experimentally did this calibration
- calibrate_linear:
- 2.77 -> 0.00
- 2.86 -> 9.00
- 2.89 -> 14.00
- 2.935 -> 17.00
- 2.96 -> 20.00
- 3.06 -> 30.00
- 3.145 -> 40.00
- 3.24 -> 50.00
- 3.33 -> 60.00
- 3.42 -> 70.00
- 3.51 -> 80.00
- 3.60 -> 90.00
- 3.65 -> 95.00
- 3.69 -> 99.00
- 3.695 -> 100.00
This calibration returns the correct values!
But this is not a scale for lifepo4: /
