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Hi alain.

thanks for the "while" and maths suggestions and for the complement on my code, I will implement them. the checking for a change on RB0 is because the receiving circuit is set to be...

Hi Alain.
thanks for the reply, really cleared things up for me. I wasnt going to use timer1 to generate an interrupt but have decided to let it now. I'm using a simple repeated check on RB0 to...

here's a few, does it have to be PIC based?

http://www.discovercircuits.com/D/dingdong.htm
http://www.electronics-project-design.com/DoorBellChime.html...

Hi JoeS.

No one brings them into South Africa, not even RS components, and its going to cost about double the entire project to ship one over so its not worth it just for an estimated 5meter...

@ skimask. yeah i know but we make do with what we have.

@acetronics: I chose BR0/INT because the receiving circuit is a single frequency passband filter, with a peak at 40.3kHz and the -3db...

Hey skimask.

thanks for the reply.
someone is never in over their head, they just have a steeper learning curve thats all :-)

I cant upgrade as the software is setup on the machines at the...

Hi all

I have got an ultrasonic distance measuring project to do for one of my varsity subjects and have hit a snag or three. (Im using a PIC16F628A, PBP version 2.45 and microcode studio plus...