Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I'm looking for the schematics of a device for showing active wireless radio transmissions (GSM/UMTS/LTE and WLAN/Bluetooth) via a simple LED or beeper.
The desired field of application would be this:
When held to your smart-phone the device should blink if there is a transmission that is...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
