 | | Re: Rolling ball clock revisited —David Koudys
| | | | (...) I love it! Very nicely done! It was interesting to read this bit off your website-- " The problem should have been very simple: each minute, start the elevator until a ball is detected by one sensor. Unfortunately, my first try over a several (...) (20 years ago, 7-Dec-04, to lugnet.technic, lugnet.robotics, FTX)
| | | | | | | | | | RCX has a fast clock, was Re: Rolling ball clock revisited —Philippe Hurbain
| | | | | Hello dave, (...) A made an experiment this night using a RCX 2.0, the clock was fast by about 10s per hour. I suppose that this problem comes from bad capacitor loading of the crystal used on RCX. Crystals need to see some capacitance to oscillate (...) (20 years ago, 8-Dec-04, to lugnet.technic, lugnet.robotics)
| | | | | | | | | | | | Re: RCX has a fast clock, was Re: Rolling ball clock revisited —Philippe Hurbain
| | | | | (...) As David Ward suggested me, the oscillator is most probably equipped with a ceramic resonator with built-in capacitors. This explains the low precision of the clock (tolerance for ceramic resonators is in the 1% range while for crystals it is (...) (20 years ago, 8-Dec-04, to lugnet.technic, lugnet.robotics)
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