CPU-METER

CPU Meter using NodeJS backend and view using NodeMCU 7 Segment LED

How to use

Set up CPU-METER

1. On your linux server install sysstat package. (Refer)

sudo apt-get install sysstat

1. Enable monitoring via,

sudo nano /etc/default/sysstat

set

ENABLED="true"

1. Install pm2 using

npm install -g pm2

1. Install cpu-meter using

npm install --save

1. Start cpu-meter

pm2 start

1. Take note of your IP Address (Remember to open port 9000 on your linux server)

Set up NodeMCU project

1. Open the code via Arduino IDE (Refer)

2. Change the WIFI_SSID and WIFI_PASSWORD

3. Change the CPU_METER_IP_ADDRESS to your linux server’s IP Address

4. Import SevSeg package to IDE by downloading (SevSeg.zip)

5. Setup your Seven Segment and note down the digitPins from NodeMCU. (NodeMCU Pinout)

6. Upload your code to NodeMCU.

7. Done.

Acknowledgement

The following references were a tremendous help.

1. https://www.instructables.com/id/Controlling-7-Segment-LED-Display-Using-ESP8266-We/

2. https://www.circuitbasics.com/arduino-7-segment-display-tutorial/

3. https://randomnerdtutorials.com/esp8266-web-server/

4. https://mechatronicsblog.com/esp8266-nodemcu-pinout-for-arduino-ide/

5. https://circuits4you.com/2019/01/11/nodemcu-esp8266-arduino-json-parsing-example/

6. https://electrosome.com/calling-api-esp8266/

7. https://www.instructables.com/id/ESP8266-Parsing-JSON/

8. https://arduinojson.org/v6/doc/upgrade/

9. https://arduinojson.org/v6/assistant/