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.
hi all , i am doing a sms access door system project and i nid something like a door sensor to sense if the door is closed properly or something.anybody have any information that u could provide?thanks.
Re: Magnetic door system
erm , for 8051 , the pin must be change to push - pull port so that when u give a 1 , it will output 3.3v and when u give a 0 , it will output 0 volt.
Re: Magnetic door system
haha. thanks for reply.i manage to solve the problem already.thanks anyway (: . by the way, i nid 12 v. i have to change the value of the resistor and the transistor right?
Re: Magnetic door system
hey.. 8051 give a 3.3 volt.if i use direct power of 3.3 volt from the power supply , it can work.but when i use 8051 to give a high, it doesnt work.the circuit is working properly, i think the main part is on the 8051 part.
Re: Magnetic door system
oh sorry . haha. **broken link removed**
hey , i tried with a led instead of the relay. the led can light up but it cannot be controlled by 8051.
Re: Magnetic door system
thanks for reply.can i use 2N4307?Because my school dont provide 2n2222 , but there is 2n4307.
Added after 2 hours 5 minutes:
erm mine teacher ask me test with relay RY5WFZ-K , instead of the magnetic lock.how do i connect the relay?pin 1 and 16?and from the power...
Re: Magnetic door system
thanks for ur reply.(: The magnetic door lock nid 12v - 24v .8051 give only 3.3v but i nid 12v.how do i increase the voltage?is there any circuit that can be use in this situation?
Re: Magnetic door system
Thanks for ur reply , but i am required to use micro processor 8051 to control the magnetic lock to energised or de-energise. i cannot use the ATMEL 89C52 that u mentioned. :(
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.
