इस वीडियो को हिंदी में देखने के लिए पे क्लिक करें https://youtu.be/CbR5TK_Z8qw
In this video we are going to make a fully automatic water level controller. There are so many circuit available in the market but they all uses micro-controller or IC. The circuit which we are going to make today have not been used any micro-controller or IC. It is very simple, cheap and effective. The best part of this circuit is that it uses 6 NPN transistor BC148 and some other components like resistance relay and diode. The costs of this circuit is less than rupees 100.
Video link for semi automatic water level controller and carbon rod sensor
https://youtu.be/GKv_htcCe6A
