Sound activated RF remote relay
2021-06-29
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 isRead More
Audio Triggers a Relay Switch
2019-07-21
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 peakRead More
Door access controller with Biometrics
2017-12-15
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.Read More
Build RFID transmitter and receiver
2017-08-12
Guide on how to build my own RFID transmitter and receiver?Read More
Active Camera trigger shutter
2017-06-14
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 triggerRead More
Halogen bulb lamp dimmer circuit
2017-03-18
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.Read More
Binary ASK modem – Power line Modem
2016-08-09
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 andRead More
Secure Entry Access Control – Smart Cards
2016-01-23
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 itRead More
