Stepper Thesis Controller

Stepper Thesis Controller-63
Hardware (L293D)Run four solenoids, two DC motors or one bi-polar or uni-polar stepper with up to 600m A per channel using the L293D.These are perhaps better known as "the drivers in Adafruit Motorshield".

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This instructable is the written version of my "Arduino : How To Control a Stepper Motor with L293D Motor Driver" You Tube video that I've uploaded recently. My You Tube Channel In this tutorial you will learn how to control a stepper motor using your L293D motor control chip Stepper motors fall somewhere in between a regular DC motor and a servo motor.

They have the advantage that they can be positioned accurately, moved forward or backwards one 'step' at a time, but they can also rotate continuously.

Optical encoder strips and quadrature optical encoders are easy to get from junk ink-jet printers.

In order to allow retrofitting of existing systems, it is desirable to have a setup that can take the PULSE and DIRECTION command signals usually accepted by stepper motor driver boards.

The Tic T834 USB Multi-Interface Stepper Motor Controller makes basic control of a stepper motor easy, with quick configuration over USB using our free software.

This version incorporates a TI DRV8834 driver and ships with soldered header pins and terminal blocks.The table below lists the members of the Tic family and shows the key differences between them.The Tic T825 USB Multi-Interface Stepper Motor Controller makes basic control of a stepper motor easy, with quick configuration over USB using our free software.Because the step signal (PULSE) is being sampled by firmware, I have a simple pulse stretcher circuit that makes the pulses a little longer.I am using reprap-gen3-firmware-2009-08-05 (slightly tweaked) on the Arduino that generates the step and direction pulses. This is a bit fast for my approx 30 KHz interrupt to detect reliably.These items can be combined to make high precision motion control setup that is quite useful.(Similar ideas can be applied to DC motors -- see Rep Rap Servo 1 0).It can operate from 8.5 V to 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (or 2.5 A max with sufficient additional cooling).This version incorporates a TI DRV8825 driver, and male headers and terminal blocks are included but not soldered.They also offer many settings that can be configured using our free configuration utility (for Windows, Linux, and mac OS).This software simplifies initial setup of the device and allows for in-system testing and monitoring of the controller via USB (a micro-B USB cable is required to connect the Tic to a computer).


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