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I believe i invented this,but i'll share it anyway. If you have power on the rotor you can place an infrared diode pointing downwards (toward the stator). it is powered by a sawtooth signal generator (or in my case a PIC witha trensistor & capacitor) The frequency should be equal as the desired...
robotics forum
the unknown ground & the prohibitively complex calculations are the reasons why the foot should be let "loose" untill it's firmly on the ground (3 points touching) Only then should the info from sensors & gyro's be taken into account to calculate the position,bearing & speed of...
robotics forum
my idea is that each "foot" of the robot should have 3 points that touch the ground. When that foot is in the air,it should be disenganged from the mechanical actuators and alowed to move freely on a ball joint.Only after all three points of the foot hit the ground should it's...
Re: static?
only there's no spark like you would expect from static buildup. Just a constant electric shock like when you touch a car battery with wet hands.
static?
Hi to all! My question is off topic but i don't really know many smart people so I'll post it here. Yesterday somebody told me about a strange phenomenon. Some people were complaining about some weird electricity inside their house. When he went over to investigate he confirmed the...
robotics forum
I never made a real robot myself,but i'm curious as to why is it hard to make a runing robot? With the right feedback & programs it should'nt be dificult.?
Re: electronic compass
This product looks more promising. BTW I was thinking about rotating a coil hooked up to a amplifyer (also rotating) ,then to a Light Emiting Diode (also rotating) when the coil crosses the magn. field lines the LED would light up. I do not know electronics & my elec. guy...
Re: electronic compass
ThanX a lot! I checked out the material. It's ok,but not good enough for what I had in mind. I'll have to disign my own electronic compass. If anyone's interested I could keep them posted on the progress.
Re: DC MOTOR RPM CONTROL
I don't understand you're terminology much. imagine you place a arrow (sideways)on a turntable. each time you open you're eyes (prompted by the generator pulse) you see the middle of the arrow. If on the next revolution you "see" any other part (wider or narrower)it...
Re: DC MOTOR RPM CONTROL
This subject generated more interest than I expected. Even if my system is new I don't want to bother with a patent(too expensive) I guess if you saw my product you could figure out what motor control I used ,but I don't know if it's OK to publish a web site here.
Re: DC MOTOR RPM CONTROL
I don't want to reveal it here. It could be old technique but i doubt it. It is analog, very simple & very responsive. the freq.gener. is kind of like "big brother" to the rotor. I use a motor from the radiator fan from a "lada"(russian car) and a (modified) impulse...
Re: motor control forum?
If you have a particular task in mind for a DC motor & can't get it right i bet somebody on thin forum can give the right advice.
Re: DC MOTOR RPM CONTROL
The freq. gen. creates a pulse (for example) each 66 ms. that prompts the sensor to scan for a marker on the rotor. If they "meet" where they should, the power is left unchanged. If the marker lags behind or has completed the revolution in less than 66 ms the feedback...
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