https://github.com/dreamcat4/arduino-fan-pwm
Combines other Arduino sketches, plus extra work. Towards a better fan pwm control, for arduino uno atmega328p
https://github.com/dreamcat4/arduino-fan-pwm
Last synced: 3 months ago
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Combines other Arduino sketches, plus extra work. Towards a better fan pwm control, for arduino uno atmega328p
- Host: GitHub
- URL: https://github.com/dreamcat4/arduino-fan-pwm
- Owner: dreamcat4
- License: unlicense
- Created: 2021-03-13T18:52:12.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2021-03-24T10:24:46.000Z (about 4 years ago)
- Last Synced: 2025-01-26T19:27:36.830Z (4 months ago)
- Language: C++
- Size: 52.7 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# arduino-fan-pwm
Combines other Arduino sketches, plus extra work. Towards a better fan pwm control, for arduino uno atmega328p
* [Setting up PlatformIO](#setting-up-platformio)
* [VSCode](#vscode)
* [Sublime Text 3](#sublime-text-3)
* [Credits](#credits)
* [Arduino Sketch - Initial Code](#arduino-sketch---initial-code)
* [High frequency pwm on ATMega 328p, by maipulating timer registers](#high-frequency-pwm-on-atmega-328p-by-maipulating-timer-registers)
* [timers](#timers)
* [atmega328p \(uno\)](#atmega328p-uno)
* [timer0](#timer0)
* [timer1](#timer1)
* [timer2](#timer2)
There are already many tutorials out there, for how to install PlatformIO extension within VSCode IDE. And get things working.
* Recommended Video - [#264 PlatformIO for Arduino, ESP8266, and ESP32 Tutorial](https://www.youtube.com/watch?v=0poh_2rBq7E)
**Note:** You may need certain other specific tools to be installed manually. For example the Arduino IDE.
Follow these official instructions:
* https://docs.platformio.org/en/latest/integration/ide/sublimetext.html
* With multiple projects open.. be sure to `Switch PlatformIO Project Environment`. In the blue status bar at the bottom
In sublime text editor:
* Type: `CTRL+SHIFT+P` to bring up command window
* Type: `Package Control: Install Package`
* Wait for Package Control directory listings to get loaded up
* Type: `Deviot`, and hit `` key
Then open a terminal window. For example if you have the `Terminus` package installed then `CTRL+SHIFT+P` then `Terminus: Toggle Panel`.
In terminal, navigate into this project root folder `arduino-fan-pwm`, and then type:
```sh
pio project init --ide sublimetext --board uno
```
This is a combined effort, after watching many educational videos explaining PID control algorithm. An also after gathering multiple arduino sketches / examples from around the web. And merging everything together.
### Arduino Sketch - Initial Code
* Name: Chris Barnes
* Url: https://barnesian.com/arduino-powered-smart-fan-controller/
* License Terms: No idea, looks Public Domain license maybe. But Copyright © 2011-2017 Chris Barnes
* Comment: Lol. Can run a diff to see which lines of the original code remains
### High frequency pwm on ATMega 328p, by maipulating timer registers
* Name: Nick Gammon
* Url: http://www.gammon.com.au/forum/?id=11504
* License: copyleft 2005 DojoDave
* Comment: Difficult to understand / follow but... Awesome stuff! Thanks so much & absolutely essential
* [ATMega 328P + 2560](http://sphinx.mythic-beasts.com/~markt/ATmega-timers.html)
* [ATmega32U4](http://medesign.seas.upenn.edu/index.php/Guides/MaEvArM-timers)
|timer |bits|channel|328P|2560|32U4|
|---|---|---|---|---|---|
|timer0 | 08 | A | 06 | 13 |
|timer0 | 08 | B | 05 | 04 |
|timer1 | 16 | A | 09 | 11 |
|timer1 | 16 | B | 10 | 12 |
|timer2 | 08 | A | 11 | 10 |
|timer2 | 08 | B | 03 | 09 |
|timer3 | 16 | A | - | 05 |
|timer3 | 16 | B | - | 02 |
|timer3 | 16 | C | - | 03 |
|timer4 | 16 | A | - | 06 |
|timer4 | 16 | B | - | 07 |
|timer4 | 16 | C | - | 08 |
|timer5 | 16 | A | - | 44 |
|timer5 | 16 | B | - | 45 |
|timer5 | 16 | C | - | 46 |
* used by `init()` function, called automatically by arduino IDE before `setup()`
* counts 1 time per `millisecond`, for the `millis()` funtion
* has a higher priority than timers 0 and 1