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posit-control's Introduction

posit-control

Posit is an STM32-based DC motor controller designed to provide an efficient and reliable solution for controlling DC motors in various applications. This README file provides an overview of the Posit motor controller, its features, and instructions on getting started and using it in your projects.

Features

  • STM32F1 Microcontroller: Posit is built around the STM32F103 microcontroller, known for its reliability and high-performance capabilities.

USB Control: Posit acts as a USB Virtual COM Port, for sending over commands via usb->serial interfaces.

UART Communication: UART interface for communication with external devices or microcontrollers.

Usage

The Posit STM32 DC Motor Controller is highly customizable to fit a wide range of applications. You can control the motor speed and direction using PWM signals, monitor current feedback, and interface with external sensors for more advanced control.

Here is a basic example of controlling a motor using Posit:

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posit-control's Issues

Create Base Schematic

Base Schematic Capture by defining requirements:

  • DRV8874
  • Microcontroller to interface with the driver
  • Power circuitry
  • USB data communication

Add initial USB operability

For the moment, we can blink the STAT_LED, which we can also use to demonstrate the USB capabilities:

  • Establish USB Device class firmware
  • Initial USB Communication - send 0 to turn LED off, 1 to turn LED on
  • Develop and solidify USB dataframe to be passed
  • Setup the Rx and Tx buffers

Add Open Loop Motor Control Firmware

For starters, add some simple Motor Control Firmware in open-loop control mode, to test if everything works fine.

  • Spin Motor1 in Clockwise direction
  • Spin Motor1 in CounterClockwise direction
  • Spin Motor2 in Clockwise direction
  • Spin Motor2 in Counterclockwise direction

Add a debug LED on the board

Currently there are status LEDs but an additional LED would be good to have which can be helpful during debugging. For example - In case of the motor PWM apis, the LED could have been an added benefit in order to test whether the PWMs are set properly or not.

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