From fbc152d91b77c9d17b136d0a1cba8b760d7e8e0b Mon Sep 17 00:00:00 2001
From: Jan Grewe <jan@faked.org>
Date: Sun, 11 Dec 2022 11:50:39 +0100
Subject: [PATCH] add pH/EC
---
packages/ads1115.yaml | 2 +
packages/ec.yaml | 61 ++++++++++++++++++++++++
packages/ph.yaml | 107 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 170 insertions(+)
create mode 100644 packages/ads1115.yaml
create mode 100644 packages/ec.yaml
create mode 100644 packages/ph.yaml
diff --git a/packages/ads1115.yaml b/packages/ads1115.yaml
new file mode 100644
index 0000000..7f6ac90
--- /dev/null
+++ b/packages/ads1115.yaml
@@ -0,0 +1,2 @@
+ads1115:
+ - address: 0x48
diff --git a/packages/ec.yaml b/packages/ec.yaml
new file mode 100644
index 0000000..39494b9
--- /dev/null
+++ b/packages/ec.yaml
@@ -0,0 +1,61 @@
+substitutions:
+ ec_k: '0.992'
+ # ec_ref & ec_res2: https://github.com/DFRobot/DFRobot_EC/blob/master/DFRobot_EC.cpp#L28 // https://www.dfrobot.com/forum/topic/28708
+ ec_ref: '200.0'
+ ec_res2: '820.0'
+
+globals:
+ - id: ec_k # raw V value from probe using EC 1.1413 calibration solution.
+ type: float
+ restore_value: yes
+ initial_value: ${ec_k}
+
+sensor:
+ - platform: ads1115
+ id: analog_ec
+ name: "EC: Analog Voltage"
+ multiplexer: 'A1_GND'
+ gain: 4.096 # max: 3.4V
+ update_interval: 5s
+ accuracy_decimals: 5
+ <<: !include filter.yaml
+ - platform: template
+ name: "EC: K Value"
+ unit_of_measurement: "K"
+ accuracy_decimals: 5
+ update_interval: 5s
+ lambda: !lambda return id(ec_k);
+ - platform: template
+ name: "EC:"
+ id: ec
+ unit_of_measurement: "mS"
+ accuracy_decimals: 3
+ update_interval: 5s
+ lambda: |-
+ float water_temperature = 20.0;
+ float ec_raw = id(analog_ec).state / ${ec_res2} / ${ec_ref} * 1000.0 * 1000.0;
+ float ec = ec_raw * id(ec_k);
+ return ec / (1 + (0.0185 * (water_temperature - 25))); // return with temperature correction
+
+button:
+ - platform: template
+ name: "EC: Calibrate"
+ on_press:
+ - then:
+ - lambda: |-
+ float water_temperature = 20.0;
+ float buffer_solution = -1;
+ if (id(ec).state > 0.9 && id(ec).state < 1.9) { // recognize 1.413us/cm buffer solution
+ ESP_LOGI("ec", "Calibrating EC with 1.413 mS/cm solution");
+ buffer_solution = 1.413 * (1.0 + 0.0185 * (water_temperature - 25.0));
+ } else if (id(ec).state > 9 && id(ec).state < 16.8) { // recognize 12.88ms/cm buffer solution
+ buffer_solution = 12.88 * (1.0 + 0.0185 * (water_temperature - 25.0));
+ ESP_LOGI("ec", "Calibrating EC with 12.88 mS/cm solution");
+ } else {
+ ESP_LOGI("ec", "Not calibrating EC, probe not in 1.413 or 12.88 mS/cm solution");
+ }
+ if(buffer_solution != -1 ) {
+ float k = ${ec_res2} * ${ec_ref} * buffer_solution / 1000.0 / 1000.0 / id(analog_ec).state;
+ ESP_LOGI("ec", "New K value: %f", k);
+ id(ec_k) = k;
+ }
diff --git a/packages/ph.yaml b/packages/ph.yaml
new file mode 100644
index 0000000..358d1d2
--- /dev/null
+++ b/packages/ph.yaml
@@ -0,0 +1,107 @@
+substitutions:
+ ph400_raw: '2.068'
+ ph686_raw: '1.574'
+ ph700_raw: '1.555'
+ ph918_raw: '1.215'
+
+globals:
+ - id: ph400_raw # raw V value from probe using pH 4.0 calibration solution.
+ type: float
+ restore_value: yes
+ initial_value: ${ph400_raw}
+ - id: ph700_raw # raw V value from probe using pH 7.0 calibration solution.
+ type: float
+ restore_value: yes
+ initial_value: ${ph700_raw}
+ - id: ph686_raw # raw V value from probe using pH 6.86 calibration solution.
+ type: float
+ restore_value: yes
+ initial_value: ${ph686_raw}
+ - id: ph918_raw # raw V value from probe using pH 9.18 calibration solution.
+ type: float
+ restore_value: yes
+ initial_value: ${ph918_raw}
+
+sensor:
+ - platform: ads1115
+ id: analog_ph
+ name: "pH: Analog Voltage"
+ multiplexer: 'A0_GND'
+ gain: 4.096 # max: 3.0V
+ update_interval: 5s
+ accuracy_decimals: 5
+ <<: !include filter.yaml
+ - platform: template
+ name: "pH: 4.00 Calibration Value"
+ unit_of_measurement: "V"
+ accuracy_decimals: 5
+ update_interval: 5s
+ lambda: !lambda return id(ph400_raw);
+ - platform: template
+ name: "pH: 6.86 Calibration Value"
+ unit_of_measurement: "V"
+ accuracy_decimals: 5
+ update_interval: 5s
+ lambda: !lambda return id(ph686_raw);
+ - platform: template
+ name: "pH: 7.00 Calibration Value"
+ unit_of_measurement: "V"
+ accuracy_decimals: 5
+ update_interval: 5s
+ lambda: !lambda return id(ph700_raw);
+ - platform: template
+ name: "pH: 9.18 Calibration Value"
+ unit_of_measurement: "V"
+ accuracy_decimals: 5
+ update_interval: 5s
+ lambda: !lambda return id(ph918_raw);
+ - platform: template
+ name: "pH:"
+ id: ph
+ unit_of_measurement: "pH"
+ accuracy_decimals: 2
+ update_interval: 5s
+ lambda: |-
+ float slope;
+ if (id(ph_slope_points).active_index() == 1) {
+ slope = (id(ph918_raw) - id(ph400_raw)) / (9.18 - 4.00);
+ } else {
+ slope = (id(ph700_raw) - id(ph400_raw)) / (7.00 - 4.00);
+ }
+ float intersect = id(ph686_raw) - (slope * 6.86);
+ return (id(analog_ph).state - intersect) / slope;
+
+select:
+ - platform: template
+ id: ph_slope_points
+ name: "pH: Calibration Points"
+ options: ["4.00/7.00", "4.00/9.18"]
+ initial_option: "4.00/7.00"
+ optimistic: true
+ restore_value: true
+
+button:
+ - platform: template
+ name: "pH: Calibrate 4.00"
+ on_press:
+ - globals.set:
+ id: ph400_raw
+ value: !lambda return id(analog_ph).state;
+ - platform: template
+ name: "pH: Calibrate 6.86"
+ on_press:
+ - globals.set:
+ id: ph686_raw
+ value: !lambda return id(analog_ph).state;
+ - platform: template
+ name: "pH: Calibrate 7.00"
+ on_press:
+ - globals.set:
+ id: ph700_raw
+ value: !lambda return id(analog_ph).state;
+ - platform: template
+ name: "pH: Calibrate 9.18"
+ on_press:
+ - globals.set:
+ id: ph918_raw
+ value: !lambda return id(analog_ph).state;
--
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