Search found 5 matches

by brandonl
Tue Oct 27, 2009 7:04 pm
Forum: Computer Programming
Topic: velocity calculated from accelerometer
Replies: 2
Views: 1183

velocity calculated from accelerometer

I have a three axis accelerometer that has a digital output (spi,i2c). I would like to calculate velocity along the z axis based on the readings using an 8 bit PIC and display it. To calculate the velocity I believe you would integrate the acceleration. It has been years since i have done calculus, ...
by brandonl
Fri May 22, 2009 9:44 am
Forum: General Discussion
Topic: Telephone Line Amplifier
Replies: 9
Views: 2307

Re: Telephone Line Amplifier

Thanks for all the replies. It may be a while before
I'm back at a sight with phone problems
but I'll have a lot more things to check, and I'll
Update the post with my findings.
by brandonl
Tue May 19, 2009 6:02 pm
Forum: Computer Programming
Topic: C Compiler questions
Replies: 14
Views: 8313

Re: C Compiler questions

I have been using the free version of mikroC and have been very pleased. The full version is reasonably priced (i think under $300), and they having a very active and helpful forum.
by brandonl
Tue May 19, 2009 5:59 pm
Forum: General Discussion
Topic: Telephone Line Amplifier
Replies: 9
Views: 2307

Re: Telephone Line Amplifier

thanks for the quick replays. externet - what I was looking for was to amplify the signals, not monitor them. I don't believe the problem is with the microphone for two reasons: 1 - we have tried on occasion swapping out the board in the car as well as swapping the call director board with no change...
by brandonl
Tue May 19, 2009 2:34 pm
Forum: General Discussion
Topic: Telephone Line Amplifier
Replies: 9
Views: 2307

Telephone Line Amplifier

Hi All, I am not familiar with telephone circuits so maybe someone here can give me some advice or suggest some reading but here is my problem. We have phone cards that we install inside elevator cars, when we have multiple cars these cards connect to a call director, which shares the incoming phone...