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. I wish to designRead More
Build RFID transmitter and receiver
2017-08-12
Guide on how to build my own RFID transmitter and receiver? Post by C1 You will find them here …some entities misuse this technology, hence people have become less interestedRead 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
Lighting and Power control Automation
2015-06-11
i am researching for a project for industrial automation . in this i am having one concept that is following below if any one of person is in room theRead More