Fan driver for waveshare board

2026-05-14 12:56:01 -07:00
commit 17c4afebfc
1 changed files with 39 additions and 0 deletions
@@ -0,0 +1,39 @@
+#!/usr/bin/python3
+
+import RPi.GPIO as GPIO
+import time
+import subprocess
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(14, GPIO.OUT)
+
+pwm = GPIO.PWM(14, 100)
+
+# print("\nPress Ctrl+C to quit \n")
+
+dc = 0
+
+pwm.start(dc)
+
+try:
+    while True:
+        temp = subprocess.getoutput("vcgencmd measure_temp|sed 's/[^0-9.]//g'")
+        print("CPU Temp: ",float(temp))
+        if round(float(temp)) >= 45:
+            dc = 100
+            pwm.ChangeDutyCycle(dc)
+            time.sleep(180)
+
+        if round(float(temp)) >= 40:
+            dc = 85
+            pwm.ChangeDutyCycle(dc)
+            time.sleep(120)
+        else:
+            dc = 70
+            pwm.ChangeDutyCycle(dc)
+            time.sleep(60)
+
+except KeyboardInterrupt:
+    pwm.stop()
+    GPIO.cleanup()
+