Plant Moisture Monitoring

This is my design of the board I used Attiny 45 and I only need one pin to sense the value and a ground and VCC also need FTDI slot since I am retrieving serial data.

Here goes the schematic.

This is the trace and cutpart of the board.

I have milled the board, all good till now.

Stuffed the same.

Here goes the setup, sensor is connected to my microcontroller board and the measure stick is placed in a glass of water I can obtain digital or analog data based on the code and pin connected to the sensor (A0 or D0).

Code

I used the following code :-

#include <SoftwareSerial.h>

This snapshot displays the variation caused when the moisture sensor is dipped into water bowl and took off.

You can download Files here.