Differences

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--- howto:usbtemp [2023/06/02 11:05] – Wulf Rajek
+++ howto:usbtemp [2023/06/05 01:01] (current) – Wulf Rajek
@@ Line 5: / Line 5: @@
 https://usbtemp.s3.amazonaws.com/manuals/usb-thermometer_installation-en.pdf
+Generate device by serial number for easier identification of probe like /dev/serial/by-serial/AYAV...:
 <code>
-dmesg | tail
 sudo vi /etc/udev/rules.d/usbtemp.rules
 SUBSYSTEM!="tty", GOTO="serial_end"
@@ Line 16: / Line 15: @@
 sudo udevadm control --reload-rules
 sudo udevadm trigger
+</code>
+<code>
+dmesg | tail
 sudo apt-get install digitemp
@@ Line 23: / Line 26: @@
 sudo usermod -a -G dialout wuff
-wuff@gondor:~/Downloads/digitemp$ newgrp dialout
+newgrp dialout
 #initialisation
@@ Line 32: / Line 35: @@
 </code>
-Python scripting example (incomplete):
+Python scripting example:
 <code>
-pip install DS18B20 pydigitemp
+#sudo pip install DS18B20 pydigitemp
+mkdir digitemp
+cd digitemp
+git clone https://github.com/mcsakoff/pydigitemp
+mv pydigitemp/digitemp .
+rm -rf pydigitemp
 </code>
 <code python digitemp.py>
 from digitemp.master import UART_Adapter
 from digitemp.device import DS18B20
-bus = UART_Adapter('COM3')
+import time
+bus = UART_Adapter('/dev/ttyUSB0')
 sensor = DS18B20(bus)
-print(sensor.get_temperature())
+while True:
+    print(sensor.get_temperature())
+    time.sleep(1)
 </code>