Yapay zekâ tarafından English dilinden çevrildi ·
Birinci sınıfta aynı şeyi yaşadım, sonradan sensör çalıştı ama şanslıydım. Tam kontrol listesi:Bağlantı: kırmızı 3V3’e (pin 1), siyah GND’ye (pin 6), sarı GPIO4’e (pin 7) ve sarıdan 3V3’e 4.7k direnç. /boot/firmware/config.txt dosyasına (eski imajlarda /boot/config.txt) dtoverlay=w1-gpio ekleyin ve yeniden başlatın. 28-xxxxxxxxxxxx klasörünü görmeniz gerekir.Ardından, sahip olduğunuz paho koduyla birlikte betik:
import glob, json, time
import paho.mqtt.client as mqtt
dev = glob.glob('/sys/bus/w1/devices/28-*/w1_slave')[0]
def read_c():
lines = open(dev).read().splitlines()
if not lines[0].endswith('YES'):
return None # CRC failed, skip this one
return int(lines[1].split('t=')[1]) / 1000.0
c = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id="basement-pi")
c.username_pw_set("YOUR_ACCESS_TOKEN") # token as username, no password
c.tls_set()
c.connect("YOUR_BROKER_HOST", 8883, keepalive=60)
c.loop_start()
while True:
t = read_c()
if t is not None:
c.publish("v1/telemetry", json.dumps({"temp_c": round(t, 2)}), qos=1)
time.sleep(60)
CPU okumalarının aynı grafikte karışmaması için temp_c gibi yeni bir anahtar adı kullanın. Broker adresi cihazın Connection details kartında yer alıyor.
Did the same thing in first year, the probe was fine afterwards but I was lucky. Full checklist:
Wiring: red to 3V3 (pin 1), black to GND (pin 6), yellow to GPIO4 (pin 7), and a 4.7k resistor from yellow to 3V3. Add dtoverlay=w1-gpio to /boot/firmware/config.txt (or /boot/config.txt on older images) and reboot. You should see a 28-xxxxxxxxxxxx folder.
Then the script, on the same paho code you have:
import glob, json, time
import paho.mqtt.client as mqtt
dev = glob.glob('/sys/bus/w1/devices/28-*/w1_slave')[0]
def read_c():
lines = open(dev).read().splitlines()
if not lines[0].endswith('YES'):
return None # CRC failed, skip this one
return int(lines[1].split('t=')[1]) / 1000.0
c = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id="basement-pi")
c.username_pw_set("YOUR_ACCESS_TOKEN") # token as username, no password
c.tls_set()
c.connect("YOUR_BROKER_HOST", 8883, keepalive=60)
c.loop_start()
while True:
t = read_c()
if t is not None:
c.publish("v1/telemetry", json.dumps({"temp_c": round(t, 2)}), qos=1)
time.sleep(60)
Use a new key name like temp_c so the CPU readings don’t mix into the same chart. Broker host is on the device’s Connection details card.