Sound activated RF remote relay
I am to build a circuit that operates off some kind of sound input into a sound activated circuit, preferably some kind of voice operated relay circuit. This relay is then to operate some...
Category: Home-Office-Automation
Audio Triggers a Relay Switch
message: Hello there i am just wondering how i would go about trying to get a circuit designed? The situation i have is i have got a sound signal peak voltage at approx 0.3v....
Door access controller with Biometrics
I am trying to design a 4 door access controller. I have a complete working board of fingerprint scanner with DSP for fingerprint verification and authentication.
Build RFID transmitter and receiver
Guide on how to build my own RFID transmitter and receiver?
Active Camera trigger shutter
well listen i read about an idea but i didn’t get it so well and i want to develop it if i understood it with ur help active camera trigger shutter something like that...
Halogen bulb lamp dimmer circuit
Can someone provide me a (simple) schematic for a dimmer that would control 12 VAC about 80 watts. This would be used to control a lamp with halogen bulbs.
Binary ASK modem – Power line Modem
Want hlp in dsigning of a binary ASK modem or Power Line Modem. I have a project of designing a binary ASK modem, with a microphone as an input and a speaker as an...
Secure Entry Access Control – Smart Cards
I am working on an access system, multi-user code for entry to restricted areas. I designed one that uses purely hardware but its a bit complicated and bulky, though it works perfectly. Might you...
