Maybe a DIY-Sensor will do the job?
All you need is a Wemos D1 mini with a luminosity sensor shield or an NodeMCU with a cheap luminosity sensor like the “BH 1750”.
This will comply your $10 budget and it’s fun to make!
Maybe a DIY-Sensor will do the job?
All you need is a Wemos D1 mini with a luminosity sensor shield or an NodeMCU with a cheap luminosity sensor like the “BH 1750”.
This will comply your $10 budget and it’s fun to make!