- #1
hazim
- 34
- 0
Hi all.
I build a project that detects the level of the water reservoir and shows that digitally using the 7-segment display... It worked...
This requires a wire with positive voltage (5V) to be at the bottom of the water reservoir (it's a copper - network wire) and a number of detecting/sensor lines (wires) at each level to be detected... I hope I explained it clearly
The problem is that the wires become coated with lime (the sensing wires/at the levels, these wires become connected to the negative terminal when water covers them) and the positive wire at the bottom becomes coated with green and white materials... this prevents current to flow between the wires as it should and then the project do not work probebly.. When I clean the wires it works perfect but after some hours it comes back to the same problem...
What do you advice me to do?? how could I solve this obstacle??
Thanks
I build a project that detects the level of the water reservoir and shows that digitally using the 7-segment display... It worked...
This requires a wire with positive voltage (5V) to be at the bottom of the water reservoir (it's a copper - network wire) and a number of detecting/sensor lines (wires) at each level to be detected... I hope I explained it clearly
The problem is that the wires become coated with lime (the sensing wires/at the levels, these wires become connected to the negative terminal when water covers them) and the positive wire at the bottom becomes coated with green and white materials... this prevents current to flow between the wires as it should and then the project do not work probebly.. When I clean the wires it works perfect but after some hours it comes back to the same problem...
What do you advice me to do?? how could I solve this obstacle??
Thanks