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Re: Stepper motor alternative ? - 13 years ago
Very intresting, thank you for the links. I was not aware of this. The holy grail would be a position feedback. There are such motors, magnetic position pickup inside the motor, but expensive and wrong KV number. I need low KV (rpm per volt) motors or i need a huge gearing which will bring lots of slop. Thanks, im readingby Cesco - Developers
Re: Stepper motor alternative ? - 13 years ago
Minimum step size is 1 step per eternity. Cant go lower than that Obviously, the easy way is to buy steppers and electonics. I know that. thanks. But i like this thing:by Cesco - Developers
Re: window alarm endstops - 13 years ago
The "small glass reed switch" closes when the magnet is near. Just put the small glass thing where the mechanical switch would go in the circuit. Range is around 1 cm, so this might not be terribly accurate.by Cesco - Developers
Re: Stepper motor alternative ? - 13 years ago
Video of a ramp-up speed test. 1 rotation and direction change: I have to increase the current at high rpm or it will stall, and it tends to make a ringing noise going stepwise. Any hints of "stepper control essentials" i could read?by Cesco - Developers
Stepper motor alternative ? - 13 years ago
I dont have any stepper motors, but i have a lot of something similar, BLDC motors. BrushLess DC motors are cheap, light, powerful, and i have some. An example of a motor, 130W power, 80g heavy, 12$: The electronics for it, 20A, 15V 7$: Now there are some problems. Those motors rev more than 10'000 rpm and dont deliver much torque. They are made for turning and not able to go to an exact posby Cesco - Developers