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A motorized fader program for the ATtiny13A uC.
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README.md

Motorized Fader

Description

Program for the ATtiny13A that controls a motorized fader by moving into a saved position read out of EEPROM memory.

Requirements

Hadware:

  • ATtiny13A/ATtiny45/ATtiny85.
  • usbasp programmer.
  • UNIX computer(to use the scripts for automation).

Software:

  • avr-gcc
  • avrdude(<=7.0)
  • CMAKE(<= 3.20)

Instructions

Setting Fader Position

To set the fader position preform a long press of the button.

The position will now be saved into the EEPROM memory.

Move to Position

To automatically move the fader into the saved location preform a quick press of the button.

The speed can be adjusted by changing the input value of the speed pot. The speed adjustment affects the on/off ratio of the motor and has a programmed minimum speed value in the function to prevent endless looping.

Building Project(Windows)

Flashing the Project

On Windows(usbtinyisp)

  1. Install the usbtiny driver:
    1. plug in usbtiny device
    2. Install the drivers from: adafruit
  2. open Powershell
  3. navigate to the repo directory cd Downloads\gf_002
  4. enter the command below.
./avrdude.exe -p t13 -c usbtiny -B 125kHz -U flash:w:.\build\src\main.hex -U lfuse:w:0x6A:m -U hfuse:w:0xFF:m -U lock:w:0xFF:m

On Windows(usbASP)

  1. Install the usbasp driver:
    1. plug in usbasp device
    2. run the 'zadig-2.8.exe' program
    3. select the libusb 32 on the right by clicking the down arrow to select.
  2. open Powershell
  3. navigate to the repo directory cd Downloads\gf_002
  4. enter the command below.
./avrdude.exe -p t13 -c usbasp -B 125kHz -U flash:w:.\build\src\main.hex -U lfuse:w:0x6A:m -U hfuse:w:0xFF:m -U lock:w:0xFF:m

Building Project(UNIX)

Building Hex Files

Builds the binary hex files. They are located in the build/src/ directory found in the project root.

cd ./<PROJECTNAME>
echo "2" | ./otto.sh

Automated Flashing Hex Files

Builds then flashes the binary hex files onto the micro-controller

cd ./<PROJECTNAME>
echo "4" | ./otto.sh

Running Tests

The code below will run the cpputest tests in verbose and color mode.

cd ./<PROJECTNAME>
echo "1" | ./otto.sh