Projects & Free Electronic Circuits

List with hundreds of projects and electronic circuits on the Site New Electronics. See below for links to the published projects, are circuits for students, hobbyists and technicians all free. You can also participate by sending your project by email.

Electronic Circuits and Projects

Here are the new electronic circuits and projects published in the New Web blog. We are reaching the thousand free electronics, are projects for students, hobbyists and technicians. You can also participate by sending your project by email.
Are the best circuits with schematics, some with printed circuit board design, mounting details and adjustments when necessary. Some items with small didactic electronic circuit design and electronic design and several circuits for all types of user.


http://blog.novaeletronica.com.br/en/projetos-circuitos/

Simples Sound Activated Switch

With this sound activated switch, control by sound may be very useful, not just on a robot but also for a bit of home automation, for example a sound-activated light responding to a knock on the door or a hand clap. The light will be automatically switched off after a few seconds. An alternative use is burglar protection — if someone wants to open the door or break something the light will come on, suggesting that someone’s at home. The circuit can work from any 5–12 VDC regulated power supply provided a relay with the suitable coil voltage is used.