静電容量型の土壌湿度センサを使ってArduinoで土の水分量測定

#include <Arduino.h>

#define SENSOR_PIN A0 // Arduino Uno
// #define SENSOR_PIN 27 // ESP32

void setup(void) {
    Serial.begin(115200);
    pinMode(SENSOR_PIN, INPUT);
    delay(3000);
}

void loop(void) {
    int val = analogRead(SENSOR_PIN);
    Serial.println(val);
    delay(1000);
}

#include <Arduino.h>

#define SENSOR_PIN A0 // Arduino Uno
// #define SENSOR_PIN 27// ESP32

const int ADC_MAX = 352; // 空気中の実測値
const int ADC_MIN = 159; // 水に浸した実測値

void setup(void) {
    Serial.begin(115200);
    pinMode(SENSOR_PIN, INPUT);
    delay(3000);
}

void loop(void) {
    int val = analogRead(SENSOR_PIN);

    if (ADC_MAX < val) {
        val = ADC_MAX;
    }
    else if (ADC_MIN > val) {
        val = ADC_MIN;
    }

    int moisture = 100 - map(val, ADC_MIN, ADC_MAX, 0, 100);

    Serial.println(moisture);
    delay(1000);
}

#include "DHT.h"
#include "Ambient.h"

#define DHT11_PIN 32
#define ADC1_PIN 34
#define ADC2_PIN 35

const int ADC1_MAX = 2230; // 空気中の実測値
const int ADC1_MIN = 990; // 水に浸した実測値
const int ADC2_MAX = 2160; // 空気中の実測値
const int ADC2_MIN = 960; // 水に浸した実測値

const char* ssid = "WiFiのSSID";
const char* password = "WiFiのパスワード";
const int channelId = AmbientのチャンネルID;
const char* writeKey = "Ambientのライトキー";
const boolean displayMode = true;

WiFiClient client;
Ambient ambient;

DHT dht(DHT11_PIN, DHT11);

void setup() {

    Serial.begin(115200);

    pinMode(ADC1_PIN, INPUT);
    pinMode(ADC2_PIN, INPUT);

    dht.begin();

    Serial.println("WiFi connecting....");
    WiFi.begin(ssid, password); //  Wi-Fiの初期化
    while (WiFi.status() != WL_CONNECTED) {  //  Wi-Fiアクセスポイントへの接続待ち
        delay(500);
    }
    Serial.println("WiFi connected!!!");
    ambient.begin(channelId, writeKey, &client);
}

int counter = 0;

void loop() {

    /** DHT11 処理 **/
    float h = dht.readHumidity();
    float t = dht.readTemperature();

    if (isnan(h) || isnan(t)) {
        Serial.println("DHT11 failed...");
    }

    /** 土壌湿度センサ 処理 **/
    int adc1 = analogRead(ADC1_PIN);
    delay(500); // 少し待たないとanalogReadに失敗する
    int adc2 = analogRead(ADC2_PIN);

    Serial.printf("adc1: %d, adc2: %d\n", adc1, adc2);

    if (ADC1_MAX < adc1) {
        adc1 = ADC1_MAX;
    }
    else if (ADC1_MIN > adc1) {
        adc1 = ADC1_MIN;
    }
    if (ADC2_MAX < adc2) {
        adc2 = ADC2_MAX;
    }
    else if (ADC2_MIN > adc2) {
        adc2 = ADC2_MIN;
    }

    int m1 = 100 - map(adc1, ADC1_MIN, ADC1_MAX, 0, 100);
    int m2 = 100 - map(adc2, ADC2_MIN, ADC2_MAX, 0, 100);

    Serial.printf("Humid: %.0f, Temp: %.1f%, Moist1: %d, Moist2: %d\n", h, t, m1, m2);

    if (counter % 6 == 0) {
        sendAmbient(h, t, m1, m2);
    }

    counter++;
    delay(4500);

}

void sendAmbient(float humid, float temp, int moist1, int moist2) {
    ambient.set(1, temp);
    ambient.set(2, humid);
    ambient.set(3, moist1);
    ambient.set(4, moist2);
    ambient.send();
}