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Im writing a programme for my Atmel 89S51.
But i cant seem to get it right. As u can see frm the picture, i can jump to SWITCHON when P2.1 is grounded but i cant jump to SWITCHOFF when P2.2 is grounded.
Can anyone help me pls... this is urgent its for my FYP
Thx
**broken link removed**
FYI...
Hi, i need some help asap.
I wanna know izzit possible for me to do an alarm without designing a circuit to it?
I mean if i just provide power to the speaker it will sound.
A friend of mine suggest i use 1 thing called 'buffer' but i cant seem to find it in the net.
Im making 1 PCB board, i hv the necessary material to do it, but not the UV exposure unit. Can i know if there's any alternative to print my circuit onto the board without using UV exposure ?
Thanks,
Jason
Re: Help needed
Yes i need outputs to control the alarms and lights, but how do i giv input to the controller to ON it.
Im planning to use the output from the sensor to giv input into the microcontroller
How do i give input to AT89C52 microcontroller if i want it to control several devices such as alarm and lights.
Im planning to do a simple ultrasonic motion sensored home security that utilise on microcontroller to activate the alarm and house lights incase the sensor detect any motion.
Can i...
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