Raspberry Pi Hardware Monitor

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• INFO
• System requirements
• Connection
• Installation
• Script settings
• Setup
• Possible errors
• Cahngelog

Hardware Monitor for Raspberry Pi

Displays information on the LCD2004 display. What is displayed? Currently done:

• Output IP address.
• RAM loading output.
• Displays the status of the SD card's memory.
• Displays the memory status of external media (approx. HDD / SSD).
• Uptime output.
• CPU temperature output.
• Temperature output from external sensor DS18B20.
• Displays the current date.

The plans to do:

• Add fan control.
• Break the script into pieces.

 

System requirements

 *Requires installed Python.  *You must enable i2c.  *You must enable 1-Wire.

Connection

Raspberry PI	LCD 2004
5V	5V
SDA	SDA
SCL	SCL
GND	GND

Raspberry PI	DS18B20
5V	5V
GPIO7	DATA
GND	GND

Installation

All commands are executed in the terminal sequentially from root.

1. Go to the home folder: cd / home / pi
2. Clone the repository: sudo git clone https: // github.com / Cherkes001 / raspberrypi_hardwaremonitor.git
3. Go to the folder with the script: cd raspberrypi_hardwaremonitor
4. We give the right to execute the script: sudo chmod + x hardware_monitor.py
5. Launch: . / hardware_monitor.py

Autostart

Script settings

0. To disable any output, you just need to comment out the line in the script through the # sign.

1. Display address. In the line I2C_ADDR = 0x27. 0x27 - replace with your address. How? - See below.

2. ID - sensor DS18B20. In the line tfile = open (" / sys / bus / w1 / devices / 28-0317249ce7ff / w1_slave ").
   28-0317249ce7ff - replace with your ID.

3. Displaying the memory status of external storage. In the line hdd = run_cmd (" df -BMB | grep / mnt / *** | awk '{print $ 2 \ "/ \" $ 3, $ 5}' ")
   Where - / mnt / *** register your mount point.

<a id="chapter-5>

Setup

1. Display Address:
   sudo i2cdetect -y 1
   A table will be displayed, where usually 27 or 3F - this is the display address.
   
2. DS18B20 Sensor ID:
   After connecting the sensor, execute the following commands:
   
3. sudo modprobe w1-gpio && sudo modprobe w1_therm
   
4. ls -l / sys / bus / w1 / devices /
   

Similar information will be displayed:
total 0<br> total 0<br> lrwxrwxrwx 1 root root 0 Nov 29 10:49 28-0317249ce7ff -> ../../../devices/w1_bus_master1/28-0317249ce7ff<br> lrwxrwxrwx 1 root root 0 Nov 29 10:49 w1_bus_master1 -> ../../../ devices / w1_bus_master1

Each sensor has a unique number. Find the sensor ID. In my case, 28-0317249ce7ff.

Possible mistakes

1. Invalid i2c display address or display not found.
   Indicate your display address (* approx. * Usually * 0x27 * or * 0x3F *) and check the connections.
   Traceback (most recent call last):<br>   File "./dispy.py", line 146, in <module><br>     lcd_byte (0x01, LCD_CMD) <br>   File "./dispy.py", line 99, in lcd_byte<br>     bus.write_byte (I2C_ADDR, bits_high)<br> IOError: [Errno 121] Remote I / O error
   

2. Invalid DS18B20 sensor ID or sensor not found.
   Enter your sensor ID and check the connections. If this sensor is not used, then simply disable its output by simply commenting out the line.
   Traceback (most recent call last):<br>   File "./dispy.py", line 142, in <module><br>     main ()<br>   File "./dispy.py", line 136, in main<br>     lcd_string ("DS18B20 Temp: {}". format (get_dallas ()), LCD_LINE_2)<br>   File "./dispy.py", line 77, in get_dallas<br>     tfile = open ("/ sys / bus / w1 / devices / 28-0317249ce7ff / w1_slave")<br> IOError: [Errno 2] No such file or directory: '/ sys / bus / w1 / devices / 28-0317249ce7ff / w1_slave'
   

Changelog

--- 15/09/2019 ---
Added EN translation for README File.

--- 08/07/2019 ---
Added CPU load output;
Another way to output UPtime;
Filling readme;

Part of the script code is found on the Internet.