 | | Vector 2X Compass
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Hello - I'm having some trouble figuring out how to wire Precision Navigation's Vector 2X Compass for use with the Handy Board. I've checked out the files in ".../software/contrib/tomb/" on the Handy Board site, but I'm sort of at a loss. Due to the (...) (25 years ago, 30-Nov-99, to lugnet.robotics.handyboard)
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| | Re: evaluate inverse cosine, sine in IC
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Another technique for finding trig functions and their inverses used by both HP and TI in their calculators is the CORDIC algrorithm. A description of the technique with lots of references can be found at: (...) (25 years ago, 29-Nov-99, to lugnet.robotics.handyboard)
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| | Re: evaluate inverse cosine, sine in IC
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Taylor series should converge quite rapidly. After 2 or 3 terms, the error is usually neglectable (depending or your demands, of course: this should be fine for up to a few decimals) For those not familiar with the Taylor expansion, I've added a (...) (25 years ago, 29-Nov-99, to lugnet.robotics.handyboard)
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| | Re: servo program, addendum
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Dear ? The initialization function is: enable_expbd_servos(1); per the latest library routines see handyboard web site. Bart Schrijver. ___...___ Reply Separator ___...___ Subject: servo program Author: Non-HP-dab8rs-85 (dab8rs_85@yahoo.com) at (...) (25 years ago, 29-Nov-99, to lugnet.robotics.handyboard)
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| | Re: servo program
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Here's a simple program that will make a servo move as the knob on the Handyboard is turned: int i; void main() { init_expbd_servos(1); while(1) { i= knob(); i = (i*10)+1000; printf("val %d\n",i); msleep(20L); servo0 = i; } } (...) (25 years ago, 29-Nov-99, to lugnet.robotics.handyboard)
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