Do Plants Have Feelings?

2024-07-31 | By M5Stack

License: General Public License Bluetooth / BLE Displays Wifi Arduino M5Stack ESP32

Thanks for the source code and project information provided by @lukas Maximus

Things used in this project

Hardware components

M5Stack M5GO Lite IoT Development Board Kit×1

Software apps and online services

Arduino IDE

Story

Have you ever wondered how your plants are feeling? This simple Arduino sketch helps you display the status of your plants using an M5stack and the earth sensor.

It uses the awesome avatar library for M5Stack by M5Stack user shinya ishikawa here https://github.com/meganetaaan/m5stack-avatar

Schematics

Connect the earth sensor to port B

Make sure the grove cable is plugged the correct way round, there are some plastic nibs on the bottom of the connector which are intended to guide it into the socket in the correct orientation

Code

Plantsmood.ino C/C++

This code also requires this avatar faces library which can be found at https://github.com/meganetaaan/m5stack-avatar

Copy Code

#include <M5Stack.h>
#include <Avatar.h>

using namespace m5avatar;

Avatar avatar;

const Expression expressions[] = {
  Expression::Angry,
  Expression::Sleepy,
  Expression::Happy,
  Expression::Sad,
  Expression::Doubt,
  Expression::Neutral
};

const int expressionsSize = sizeof(expressions) / sizeof(Expression);
int idx = 0;

void setup() 
{
  M5.begin();
  M5.Lcd.setBrightness(30);
  M5.Lcd.clear();

  avatar.init();
  avatar.setExpression(expressions[idx]);
  idx = 0;
}

void loop() 
{
  int adc = analogRead(36);
  adc = map(adc, 4095, 0, 0, 255);

  M5.update();
  if (adc <=5)
  {
    avatar.setExpression(expressions[idx]);
    idx = 3;
  }
  else if (adc > 10 && adc < 40)
  {
    avatar.setExpression(expressions[idx]);
    idx = 2;
  }
  Serial.println(adc);
  delay(2);
}