Hello, I'd like to know if it's possible evaluate the electrical flow presence in a wire with low cost electronic components.
Imagine to have a normal wire to a normal lamp.
I want to have a contact (on/off) to check if the lamp is switched on or not.
The best is applying it externally, so maybe for induction.
When i know there's this flow i want my contact closed, so i can put this input in a PLC or something else.
Which is your best (and cheapest) solution?
I already have a solution, but it's a bit invasive and too expensive than what i want.
For this job i need little report with components list with price and where i can buy components online, and a simple scheme for this.
You can apply, but to assign to you the job i want to know from you your project budget and how invasive is the installation.
Skills: engineering, ethical-hacking