Heuristics for “Gilli” the Gecko rain barrel
1. Visibility of system status
Green lights indicate water level of rain barrel (Gilli)
Red lights – need to add water
Blue lights flashing – indicate the system is watering the garden bed
2. Match between system and the real world
The body of Gilli is similar to a real barrel. There are solar panels on the top which act and behave like solar panels.
3. User control and freedom
There is no reason for undo, because there is no interaction for the user.
4. Consistency and standards
The meaning of the lights is consistent with U.S. standards. Green is go and red is an alert (fill with water).
There is no reason in my design for an error prevention. The watering is sensor based and water can always be manually turned on/off.
6. Recognition rather than recall
The lights are clearly visible on the outside of Gilli's body.
7. Flexibility and efficiency of use
Gilli is not a screen or an app, so there are no frequent actions for to learn.
8. Aesthetic and minimalist design
All the parts are relevant. The solar panels activate the lights and the tail is a hose where water is dispursed through an attached irrigation hose.
9. Help users recognize, diagnose, and recover from errors
No error messages. It is a basic system.
10. Help and documentation
There would be a teacher to answer questions for the students.