This is great but why cannot you do it? I think it is cheaper, no mechanics (that can fail), easier to build and only you have to disable it by software. Even if user pushes the button, nothing will...
Yes, that explains everything. Unfortunately, I can't use the HSERIN/HSEROUT ports available in the 18F4550 because they are already taken doing the hardware communication. Increasing the baud rate...
The PIC ports with HSEROUT and HSERIN are already taken. Using a baud rate of 9600 instead of 19200 made a difference. It is now working fine. The USB Darrel's interrupt takes micro seconds to...
The design is based on a classic switch (On/Off) but if I understand correctly, in special cases, the push button should be in a specific state and user is not allowed to change that.
Published on - 2nd July 2010 16:12
Number of Views: 7843
I have been thinking for a while, how to put togeter a simple microstepper controller without using a ready made commercial driver.
At the end, I came up with this simple project capable to drive unipolar stepper motor in three different modes
FULL STEP
HALF STEP
MICRO STEP
The Pic micro used in this work is a Pic 16F628 a powerfull small micro with PWM capability. With this MCU plus a 74HC04 and a74HC86 the controller will produce 20 microsteps out of a nominal motor step.
An additional improvement of this controller, is the capability to accept travel commands of 24 Bits, wich gives to the user the possibility to send positioning profile of over 16 millions steps.
Controller accept commands via TTL serial port @ 9600,n,8,1 and return an (Ack) once the positioning profile has been completed.
Download the zipped MicroStepper.zip file which contains schematic + software + user manual
Also attached is a simple stepper controller example called Stepper_MK2.zip
Re: New project - MSFS C++ USB interface
This is great but why cannot you do it? I think it is cheaper, no mechanics (that can fail), easier to build and only you have to disable it by software. Even if user pushes the button, nothing will...
Ioannis - 1st May 2024, 19:32