Program design
The screenshot of the Micro:bit program:
Explanation of the program code:
- How often does the system detects the soil moisture level?
It detects in every 10 seconds
- What level is considered to be dry?
If the moisture level is lower than 900, it is considered to be dry.
- How long (in number of seconds) does the water pump operate each time?
The water pump operates for 3 seconds each time.