Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Re: repel cats
Human hearing range is about 20Hz to 20Khz and the cats heare sounds form the range of 45Hz to 64Khz so a circut that emits sounds above 30KHz would be good but the risks are that thesse ultrasounds even if they can not be heard they have a certain effect on humans to. So if you...
The program is prety simple you just have to identify the signal received from the IR emitter. I think linking the output pin of your receiver to an input pin from your uC and then just verifiing the logic level of that pin is ok.So you just choose an input pin from your uC and verifie if it's...
YOU can find a lots of tutorials on the internet about IR receivers and transmiters. If you only want to switch an LED on-off then you just have to detect the signal on your IR Receiver witch by my opinion should be TSOP1736 witch works at 36Khz frequency and it receives from a distance of up to...
ok but i could think about another solution for getting reverse voltage, I am talking about inverting the plarities received from the voltage source do you think that it is a solution?so originaly i have 12v output from the circuit , if i revers the polarities of the voltage source i can get...
The carrier frequency of RC-5 is not exactely 35Khz.I'm also wondering if your receiver is equiped with IR filtering coat ,if it is, then try deconnecting the gnd pin from your receiver and measure the frequency of the signal that you receive when gnd pin is not connected.I also had a prject for...
12V to -24V
I have a project in witch i need to change the output voltage of a circuit from 12 V to -24 V, I think using an amplifier to raise the voltage to 24 and then an inverter to make it "negative" would be OK. Can you give me some examples of IC's for getting the revrse voltage ?I know...
HCS12X remote control
I need help with a program to remotely controll the microcontroller with IR signal .For this project i have to use RC5 protocol.The interface between the uC and the remote control's circuitry is made by RS232 interface. If somebody is familiar with this kind of uC i whould...
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.
