This circuit detects metal and also magnets. When a magnet is brought close to the 10mH choke, the output frequency changes.
Thanks for the reply.Sir, any idea about how Arduino UNO will read this sensor... the one with 555 timer!
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16