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5 changed files with 211 additions and 10 deletions
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.gitignore
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.gitignore
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/build
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/local.make
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/*.code-workspace
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docs/circuit-netlist.txt
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docs/circuit-netlist.txt
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'microcontroller #5:4 #7:5 #19:2 #23:0 header=Arduino Micro sz=34 p0=13 p1=12 p2=+3V p3=11 p4=AREF p5=10 p6=18 p7=9 p8=19 p9=8 p10=20 p11=7 p12=21 p13=6 p14=22 p15=5 p16=23 p17=4 p18=NC p19=3 p20=NC p21=2 p22=+5V p23=GND p24=RESET p25=RESET p26=GND p27=0 p28=VIN p29=1 p30=14 p31=17 p32=15 p33=16 p34= p35= p36= p37= p38= p39=
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docs/circuit.svg
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docs/circuit.svg
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<text x="500" y="330" style="font-family:monospace;font-size:11px;text-anchor:middle" dominant-baseline="middle">female fan connector 1</text>
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<text x="90" y="90" style="font-family:monospace;font-size:11px;text-anchor:middle" dominant-baseline="middle">Arduino Micro</text>
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<text x="44" y="120" style="font-family:monospace;font-size:11px;text-anchor:start" dominant-baseline="middle">+3V</text>
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<text x="44" y="130" style="font-family:monospace;font-size:11px;text-anchor:start" dominant-baseline="middle">AREF</text>
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||||||
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<line x1="30" y1="250" x2="40" y2="250" style="stroke:rgb(0, 0, 0);stroke-linecap:square;stroke-width:2" />
|
||||||
|
<text x="44" y="250" style="font-family:monospace;font-size:11px;text-anchor:start" dominant-baseline="middle">VIN</text>
|
||||||
|
<line x1="140" y1="250" x2="150" y2="250" style="stroke:rgb(0, 0, 0);stroke-linecap:square;stroke-width:2" />
|
||||||
|
<text x="136" y="250" style="font-family:monospace;font-size:11px;text-anchor:end" dominant-baseline="middle">1</text>
|
||||||
|
<line x1="30" y1="260" x2="40" y2="260" style="stroke:rgb(0, 0, 0);stroke-linecap:square;stroke-width:2" />
|
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|
<text x="44" y="260" style="font-family:monospace;font-size:11px;text-anchor:start" dominant-baseline="middle">14</text>
|
||||||
|
<line x1="140" y1="260" x2="150" y2="260" style="stroke:rgb(0, 0, 0);stroke-linecap:square;stroke-width:2" />
|
||||||
|
<text x="136" y="260" style="font-family:monospace;font-size:11px;text-anchor:end" dominant-baseline="middle">17</text>
|
||||||
|
<line x1="30" y1="270" x2="40" y2="270" style="stroke:rgb(0, 0, 0);stroke-linecap:square;stroke-width:2" />
|
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|
<text x="44" y="270" style="font-family:monospace;font-size:11px;text-anchor:start" dominant-baseline="middle">15</text>
|
||||||
|
<line x1="140" y1="270" x2="150" y2="270" style="stroke:rgb(0, 0, 0);stroke-linecap:square;stroke-width:2" />
|
||||||
|
<text x="136" y="270" style="font-family:monospace;font-size:11px;text-anchor:end" dominant-baseline="middle">16</text>
|
||||||
|
|
||||||
|
<ellipse cx="280" cy="200" rx="2" ry="2" style="fill-opacity:1;fill:rgb(0, 0, 0);stroke:rgb(0, 0, 0);stroke-width:2" />
|
||||||
|
<ellipse cx="360" cy="220" rx="2" ry="2" style="fill-opacity:1;fill:rgb(0, 0, 0);stroke:rgb(0, 0, 0);stroke-width:2" />
|
||||||
|
<ellipse cx="560" cy="220" rx="2" ry="2" style="fill-opacity:1;fill:rgb(0, 0, 0);stroke:rgb(0, 0, 0);stroke-width:2" />
|
||||||
|
</svg>
|
||||||
|
|
@ -1,10 +0,0 @@
|
||||||
{
|
|
||||||
"folders": [
|
|
||||||
{
|
|
||||||
"path": "."
|
|
||||||
}
|
|
||||||
],
|
|
||||||
"settings": {
|
|
||||||
"makefile.configureOnOpen": true
|
|
||||||
}
|
|
||||||
}
|
|
||||||
61
readme.md
Normal file
61
readme.md
Normal file
|
|
@ -0,0 +1,61 @@
|
||||||
|
# Kulifuli — The Arduino Half
|
||||||
|
|
||||||
|
Kulifuli is an Arduino Micro based PC fan controller with the option to send a fake tachometer PWM
|
||||||
|
signal back to the motherboard. This is useful for for example server motherboards that refuse to
|
||||||
|
operate unless such a signal is received. (Such as the one in my HP Proliant that always spins its
|
||||||
|
fans at 100% after the latest firmware update. Thank you HP, very cool of you to do that.)
|
||||||
|
|
||||||
|
This repository contains the Arduino side of the software, in addition to information about the
|
||||||
|
hardware. For the software to run on the host see
|
||||||
|
[this repository](https://kernelmaft.com/forgejo/zedfrigg/kulifuli-host).
|
||||||
|
|
||||||
|
## Building
|
||||||
|
|
||||||
|
Requirements: GNU Coreutils, GNU Make,
|
||||||
|
[Arduino CLI](https://docs.arduino.cc/arduino-cli/),
|
||||||
|
[GCC for AVR](https://www.microchip.com/en-us/tools-resources/develop/microchip-studio/gcc-compilers)
|
||||||
|
|
||||||
|
This project uses the standard Arduino core library obtained via Arduino CLI, but we do not use it
|
||||||
|
as a build tool.
|
||||||
|
|
||||||
|
To obtain said library:
|
||||||
|
|
||||||
|
```sh
|
||||||
|
arduino-cli core update-index
|
||||||
|
arduino-cli core install arduino:avr
|
||||||
|
```
|
||||||
|
|
||||||
|
To build the project:
|
||||||
|
|
||||||
|
```sh
|
||||||
|
make build
|
||||||
|
```
|
||||||
|
|
||||||
|
The firmware image for the Arduino Micro should now be present as `build/kulifuli.hex`.
|
||||||
|
|
||||||
|
## Flashing
|
||||||
|
|
||||||
|
Additional requirement: [AVRDUDE](https://github.com/avrdudes/avrdude)
|
||||||
|
|
||||||
|
Connect the Arduino Micro to your computer over USB. If USB serial support is set up correctly the
|
||||||
|
device should now have a path it can be referenced by, e.g. `/dev/ttyACM0` on Linux. Create a file
|
||||||
|
named `local.make` in the root of the project containing `arduino_serial_port =` followed by this
|
||||||
|
path.
|
||||||
|
|
||||||
|
Now flash the firmware image to the device:
|
||||||
|
|
||||||
|
```sh
|
||||||
|
make upload
|
||||||
|
```
|
||||||
|
|
||||||
|
## Hardware
|
||||||
|
|
||||||
|
The hardware design is extremely simple, it contains no active components other than the Arduino
|
||||||
|
Micro. Two case fans can be connected to the male fan headers, and the female fan connectors should
|
||||||
|
be connected to their original headers on the motherboard. The fan controller sits in between the
|
||||||
|
fans and the motherboard, passing through the power and ground but intercepting the control
|
||||||
|
signals.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
You can obtain a netlist file of this circuit [here](docs/circuit-netlist.txt).
|
||||||
Loading…
Add table
Add a link
Reference in a new issue