The STEPPER-STICK is a full-featured Stepper Motor Controller + Drive
built into a USB Stick. The Stick
Measures 2 x 1 x 0.5 inch and can provide 0.25A of motor current if powered by the USB
Bus or up to 0.5A if powered by an external power source. The controller performs fully profiled moves
with control of acceleration, velocity and position. Additional rich features include quadrature
encoder feedback, 4 Analog and Digital inputs, 2 On/Off power outputs, program
storage, and a built-in logic sequencer that can loop, branch and control the
stepper/outputs based on status of inputs. The STEPPER-STICK is designed for
ultimate ease of use. Only a PC, a
stepper motor and the STEPPER-STICK are required. The user needs to wire only four contacts for
the stepper motor and plug the STEPPER-STICK into a PC. An engineer unfamiliar with Motion Control
can have a stepper motor spinning intelligently in less than half an hour. The STEPPER-STICK is an introduction to the
capability and programming language for a family of more conventional products
at AllMotion. This family of products allows an engineer to progress to an OEM
application with ease. Most designs with this functionality occupy about 10X
the volume of this drive. Products of
similar volume have only the "driver" and depend on the PC to perform the "controller"
function. The STEPPER-STICK boosts the
5V from the PC to 15V and has a Bipolar Drive - similar products are typically
Unipolar and 5V. The STEPPER-STICK has all intelligence built in, and once
programmed can operate with no computer attached. In addition to Motion Control, the STEPPER-STICK
has other capability such as Analog Inputs, Digital Inputs, and On/Off Power
Driver Outputs useful in performing real world applications.
Researchers at the University of Maryland have achieved a first in lithium-ion battery science: the development of a successful lithium-based battery using one material for all three core components of a battery -- anode, cathode, and electrolyte.
The online Bar Steel Fatigue Database for automotive design engineers has been updated for the fifth time and now contains 134 iterations, or grade/process combinations. It provides better predictability for designing parts with long-term reliability and durability.
FPGAs use programmable fabric to create custom logic, but this flexibility comes at a cost -- usually around 10 times more silicon real estate and 10 times the power dissipation. Can we really claim any FPGA is low power?
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.