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@@ -1,3 +1,51 @@
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# gpu-fan-ctrl
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# GPU Fan Controller — Delta QFR1212GHE
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GPU Fan Controller — Delta QFR1212GHE
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Автоматическое управление вентилятором на Tesla V100-PCIE-32GB по температуре GPU.
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## Подключение
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| Вентилятор | Arduino Uno |
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|---|---|
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| красный (+12V) | к блоку питания |
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| чёрный (GND) | GND блока питания |
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| жёлтый (tach) | D2 |
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| синий (PWM) | D9 |
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## Установка
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```bash
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git clone ...
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sudo cp scripts/gpu_fan_ctrl.sh /root/
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sudo chmod +x /root/gpu_fan_ctrl.sh
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sudo cp systemd/gpu-fan-ctrl.service /etc/systemd/system/
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sudo systemctl daemon-reload
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sudo systemctl enable --now gpu-fan-ctrl.service
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tail -f /root/gpu_fan.log
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```
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## Ручное управление
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```bash
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stty -F /dev/ttyUSB0 115200
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echo "6" > /dev/ttyUSB0 # полная
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echo "3" > /dev/ttyUSB0 # средний
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echo "s" > /dev/ttyUSB0 # статус
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echo "RPM" > /dev/ttyUSB0 # обороты
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```
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## Режимы
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| Режим | PWM | Температура |
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|---|---|---|
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| STOP | 10000 | — |
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| STANDBY | 8000 | < 23°C |
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| LOW | 5000 | 23–28°C |
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| MED | 3000 | 28–33°C |
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| HIGH | 2500 | 33–39°C |
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| FULL | 0 (2 мин) | > 45°C ИЛИ рост 3°C/2с |
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## Подпись
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Собрано при участии Qwen3.8-35B-A3B-Q4_K_M @ Tesla V100 32GB (PID 3666) на debi9.
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@@ -0,0 +1,112 @@
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// GPU Fan Controller — Delta QFR1212GHE (4-pin PWM, 12V)
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// 6 режимов: 1=STOP, 2=STANDBY, 3=LOW, 4=MED, 5=HIGH, 6=FULL(2 мин)
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// RPM читается через тахометр (жёлтый → D2), PWM на синий → D9
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// PWM инвертирован: 0 = стоп, 99 = полная (Delta QFR1212GHE)
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// Фан не гаснет полностью — минимум 1000 (10%)
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const int FAN_PIN = 9;
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const int TACH_PIN = 2;
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volatile unsigned long tachPulses = 0;
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unsigned long lastRpm = 0;
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unsigned long lastDataTime = 0;
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const int MODE_STOP = 10000;
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const int MODE_STANDBY = 8000;
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const int MODE_LOW = 5000;
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const int MODE_MED = 3000;
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const int MODE_HIGH = 2500;
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const int MODE_FULL = 0;
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const int MODE_FULL_TIME = 60000;
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int currentPWM = MODE_STANDBY;
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unsigned long modeFullStart = 0;
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bool inModeFull = false;
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char buf[16];
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void setup() {
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pinMode(FAN_PIN, OUTPUT);
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pinMode(TACH_PIN, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(TACH_PIN), tachISR, FALLING);
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Serial.begin(115200);
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// Timer1: Fast PWM, ICR1=10000, prescaler 64 → 10Hz
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TCCR1A = _BV(COM1A1) | _BV(COM1A0) | _BV(WGM11);
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TCCR1B = _BV(WGM12) | _BV(WGM13) | _BV(CS12);
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ICR1 = 10000;
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OCR1A = MODE_STANDBY;
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lastDataTime = millis();
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lastRpm = millis();
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Serial.println("FAN CONTROLLER READY - modes 1-6 + RPM");
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}
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void tachISR() { tachPulses++; }
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void applyPWM(int pwm) {
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if (pwm < MODE_FULL) pwm = MODE_FULL;
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if (pwm > MODE_STOP) pwm = MODE_STOP;
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OCR1A = pwm;
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currentPWM = pwm;
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}
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void loop() {
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unsigned long now = millis();
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if (Serial.available()) {
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int n = Serial.readBytesUntil('\n', buf, 15);
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if (n > 0) {
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buf[n] = '\0';
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char c = buf[0];
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if (c >= '1' && c <= '6') {
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lastDataTime = now;
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inModeFull = false;
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modeFullStart = 0;
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switch (c) {
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case '1': applyPWM(MODE_STOP); Serial.println("MODE: 1 STOP"); break;
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case '2': applyPWM(MODE_STANDBY); Serial.println("MODE: 2 STANDBY"); break;
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case '3': applyPWM(MODE_LOW); Serial.println("MODE: 3 LOW"); break;
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case '4': applyPWM(MODE_MED); Serial.println("MODE: 4 MED"); break;
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case '5': applyPWM(MODE_HIGH); Serial.println("MODE: 5 HIGH"); break;
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case '6':
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applyPWM(MODE_FULL);
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inModeFull = true;
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modeFullStart = now;
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Serial.println("MODE: 6 FULL (60s)");
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break;
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}
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}
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if (c == 'R' || c == 'r') {
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noInterrupts();
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unsigned long p = tachPulses;
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tachPulses = 0;
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interrupts();
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Serial.print("RPM:"); Serial.println(p * 60);
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}
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if (c == 's' || c == 'S') {
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Serial.print("PWM:"); Serial.println(currentPWM);
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if (inModeFull) Serial.print("FULL:"); Serial.println((now - modeFullStart) / 1000);
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Serial.print("DATA:"); Serial.println((now - lastDataTime) / 1000);
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}
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}
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}
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if (inModeFull && (now - modeFullStart >= MODE_FULL_TIME)) {
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applyPWM(MODE_MED);
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inModeFull = false;
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Serial.println("FULL TIMEOUT -> MODE_MED");
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}
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if (now - lastRpm >= 1000) {
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noInterrupts();
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unsigned long p = tachPulses;
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tachPulses = 0;
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interrupts();
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Serial.print("RPM:"); Serial.println(p * 60);
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lastRpm = now;
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}
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}
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@@ -0,0 +1,98 @@
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#!/bin/bash
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# GPU Fan Controller — Delta QFR1212GHE
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# Режимы: 2=STANDBY(<25), 3=LOW(<30), 4=MED(<35), 5=HIGH(<40), 6=FULL(>45 или burst)
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# Режим 1 (STOP) — не используется, фан всегда крутится минимум на standby.
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# Порог burst: temp > 45°C ИЛИ рост >= 3°C за 2 секунды.
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LOG=/root/gpu_fan.log
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DEV=/dev/ttyUSB0
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stty -F "$DEV" 115200
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exec 3>"$DEV"
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exec 1>>"$LOG" 2>&1
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# Пороги
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TH_COLD=25
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TH_LOW=30
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TH_MED=35
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TH_HIGH=40
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TH_BURST=45
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TH_BURST_ROISE=3
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BURST_WINDOW=2
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BURST_DURATION=120
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# Хистерезис (мёртвая зона 2°)
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HYST=2
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prevTemp=0
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prevTime=0
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burstTimer=0
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lastMode=0
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noDataCount=0
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echo "[START] $(date) GPU Fan Ctrl PID=$$"
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while true; do
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TEMP=$(nvidia-smi --query-gpu=temperature.gpu --format=csv,noheader -i 0 | tr -cd '0-9')
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now=$(date +%s)
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if [ -z "$TEMP" ] || ! [ "$TEMP" -gt 0 ] 2>/dev/null; then
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noDataCount=$((noDataCount + 1))
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if [ $noDataCount -ge 10 ]; then
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echo "[ERROR] nvidia-smi failed 10+ times, aborting"
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exit 1
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fi
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sleep 1; continue
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fi
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noDataCount=0
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# Burst: temp rose TH_BURST_ROISE in BURST_WINDOW
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if [ $prevTemp -gt 0 ] && [ $((prevTime != 0 ? now - prevTime : 99999)) -le $BURST_WINDOW ]; then
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rise=$((TEMP - prevTemp))
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if [ $rise -ge $TH_BURST_ROISE ]; then
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burstTimer=$BURST_DURATION
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echo "[BURST-rise] rise=$rise°C in $((now-prevTime))s → mode 6"
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fi
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fi
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# Если в burst-режиме — держим режим 6
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if [ $burstTimer -gt 0 ]; then
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burstTimer=$((burstTimer - 1))
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if [ $lastMode -ne 6 ]; then
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echo "[MODE 6] full speed (burst, ${burstTimer}s remain)"
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lastMode=6
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echo "6" >&3
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fi
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prevTemp=$TEMP; prevTime=$now
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sleep 1; continue
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fi
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# Если burst истёк И temp >= TH_BURST — новый burst
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if [ $TEMP -ge $TH_BURST ]; then
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burstTimer=$BURST_DURATION
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echo "[MODE 6] full speed (re-burst: $TEMP°C)"
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lastMode=6; prevTemp=$TEMP; prevTime=$now
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echo "6" >&3
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sleep 1; continue
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fi
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# Обычная логика с хистерезисом
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newMode=5 # default: HIGH (35-39)
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if [ $TEMP -lt $((TH_COLD - HYST)) ]; then
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newMode=2 # STANDBY (< 23)
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elif [ $TEMP -lt $((TH_LOW - HYST)) ]; then
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newMode=3 # LOW (< 28)
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elif [ $TEMP -lt $((TH_MED - HYST)) ]; then
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newMode=4 # MED (< 33)
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fi
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# Отправляем только если режим изменился
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if [ $newMode -ne $lastMode ]; then
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echo "[MODE $newMode] temp=$TEMP°C (hysteresis: no-change zone)"
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lastMode=$newMode
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echo "$newMode" >&3
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fi
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prevTemp=$TEMP; prevTime=$now
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sleep 1
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done
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@@ -0,0 +1,17 @@
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[Unit]
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Description=GPU Fan Controller (Delta QFR1212GHE, Tesla V100 32GB)
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After=network-online.target nvidia.service
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Wants=network-online.target
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[Service]
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Type=simple
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ExecStart=/root/gpu_fan_ctrl.sh
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Restart=on-failure
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RestartSec=5
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StandardOutput=journal
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StandardError=journal
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User=root
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Group=root
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[Install]
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WantedBy=multi-user.target
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