Installation procedure of ESP32

Requirements:

Nodemcu Mfrc522 Card readers/tags Jumper wires Bread board Power cable Buzzer Small Led lights

Install the thonny using below link: https://thonny.org/ Then click on windows, download latest version

After that download firmware file to configure the thonny using micropython(ESP32) with nodemcu.

To download micropython firmware file use link: https://micropython.org/download/esp32/ Select the latest version of firmware file

Open Tools in thonny click on options then click on interpreter then choose MicroPython(ESP32) .

Here we have only COM1 port ,but we don’t want it

have to select the port Silicon Labs CP210x USB to UART Bridge (COM3). Here we can get any port like COM4…COM8 etc On the above picture only COM1 port is available If we don't have the Silicon labs port ,go to start menu and open device manager. Click on ports to check whether the port is available or not. If the Silicon port is not available, Connect the nodemcu device to cpu On device manager other device option will display.click on the other device It shows device name like CP2102 USB-to-Serial Bridge Driver

Click on the below link to install Driver https://www.usb-drivers.org/cp2102-usb-to-uart-bridge-driver.html After opening this link ,scroll down and click on
CP2102 USB-to-Serial Bridge Driver - windows option for download
After completion of downloading the Driver, Double click on the downloaded zip file Select Wizard option ,select the destination where we want to extract the file ,click on finish Double click on the extracted file Double click on CP210xVCPInstaller_x64 Click on install option,click on close Open device manager Select port,here the new port is available

Open thonny,click on tools, select options Click on interpreter Select micropython(ESP32) Select the port which we added in port (Silicon Labs com3) Click on install or update micropython Here again select Silicon Labs COM3 port and Browse the firmware file (esp8266-1m-20220618-v1.19.1.bin) along with path to install the micropython(in the starting we gave link to download the firmware file) Select erase flash before installing Click on Install button

After that Clone the below program files boot.py, main.py, mfrc522.py, websocket.py
Click the below link it shows code, copy the code and paste in the notepad save the code with name boot.py boot.py file:

https://gist.githubusercontent.com/ChVeerababu/84b324013719e792ac83e3975d12d446/raw/32a55d7b0c2248a76da826eb615ed740c21428c1/boot.py

Click on the below link it shows code, copy and paste the code in notepad ,save the code with name main.py

main.py file :

https://gist.githubusercontent.com/ChVeerababu/7c6138c94e079384aa09408886b7f863/raw/61ad5620d1efcad7b9c072980e7b9ca9c97126f5/main.py

wifi.conf file:

proxy@!v!s_2.4GHz !v!s@proxy

Click on the below link it shows code, copy and paste the code in notepad ,save the code with name mfrc522.py

mfrc522.py file:

https://gist.githubusercontent.com/ChVeerababu/0021f90e0be8b8888af5d6191007b8ea/raw/20fb5eaa5e04b0c5e1ab710b77ae847488d0c7ac/mfrc522.py

Click on the below link it shows code, copy and paste the code in notepad ,save the code with name websocket.py

websocket.py file:

https://gist.githubusercontent.com/ChVeerababu/35ae0a82e6b6d0c0f5422f733c91681e/raw/13d842584be66e018a6ec1c47380f524b17279ed/websocket.py

Open thonny IDE to run program file IN Thonny click on Files then click on open , open the files which file we extract from zip for micropython programming files

First time when we connect the nodemcu device to cpu,if the device connects to wifi, on nodemcu the led light will turn on only for 10 to15 sec If the device doesn't connect to wifi ,the led light will not turn on and the light blinks on and off. To connect the wifi,turn on your wifi connection and connect to AP_ESP32 with password:1234567890 Now we connected to wifi ,”connected but no internet” Now open the web page with the ip 192.168.4.1 and it shows available networks Select your wifi network and enter credentials
It will take some time to connect to device Reboot the device Connect the nodemcu device again ,now the led light should be turn on the device Now the device connected to network The passive RFID card tag frequency range must be 125KHz to 13.56 MHz Then scan the card on the mfrc522 device The device data will store on the database By calling an API we can get the device data from database

Connect the nodemcu device to 12v charger adapter On the device the led light must be blink for 10 to 15 sec Later the led light will off because the device did not connect to the internet Wait for 10 sec ,later open wifi on your mobile Connect to AP_ESP32 with password 1234567890 If the device connected to wifi(AP_ESP32) it shows the message “connected, no internet” Open chrome/web browser on your mobile Enter the ip 192.168.4.1 and wait for 5-10 sec It will take some time to connect to device It shows available Access points(networks) with security type shown as in below image

Select your access point ,enter password click on submit Now your device connected to internet

Reboot the device Connect the nodemcu device again ,now the blue light should be turn on the device Now the led light blinks on the device continuously that means the device connected to network Scan the tag/card on mfrc522 device When we scan the tag/card,the green light should be blink on the device and the device plays buzzer sound The device data and tag data will store in database By calling an API we will get all the data