Joy-it NodeMCU ESP32 User manual

NodeMCU ESP32
Manual
3

NodeMCU ESP32
Published: 18.04.2019 Copyright by Joy-IT 2
1. Introducon
2. Overview
3. Module installaon
4. Usage
7. Support
8. Other Informaons
TABLE OF CONTENTS

NodeMCU ESP32
Published: 18.04.2019 Copyright by Joy-IT 3
Dear customer,
thank you for choosing our product.
In the following, we will show you what to observe during commissioning and use.
Should you encounter any unexpected problems during use, please do not hesitate to
contact us.
The NodeMCU ESP32 module is a compact prototyping board and can be easily programmed via the
Arduino IDE. It features 2.4 GHz dual-mode Wi-Fi and Bluetooth. Also integrated on the microcontroller
development board are 512kb SRAM and 4MB memory.
PWM is enabled on every digital pin.
An overview of the available pins can be seen in the following gure:
1. INTRODUCTION
2. OVERVIEW
2x DAC 15x ADC 1x SPI
1x I²C 2x UART

NodeMCU ESP32
Published: 18.04.2019 Copyright by Joy-IT 4
If you have not yet installed the Arduino IDE on your computer, download and install it rst.
Next, add a new board manager by following the steps below.
1. Click on File / Preferences
2. Add following link at Addidional Board Manager URLs :
hps://dl.espressif.com/dl/package_esp32_index.json
You can separate mulple URLs with a comma
3. MODULE INSTALLATION

NodeMCU ESP32
Published: 18.04.2019 Copyright by Joy-IT 5
3. Go to Tools/Board/Boards Manager...
4. Install esp32 by Espressif Systems
The module installaon is now
complete.
You can now choose the
ESP32 Dev Module at Tools/Board
3. MODULE INSTALLATION
Aenon! Aer the inial installaon, the baud rate may have changed to "921600". This may
cause problems. In this case, select the baud rate "115200" to avoid any problems.

NodeMCU ESP32
Published: 18.04.2019 Copyright by Joy-IT 6
Your NodeMCU ESP32 is now ready to use. Simply connect it to your computer with a USB cable.
The installed library already provides many examples to allow a quick insight into the module.
You can nd the examples in your Arduino IDE under "File -> Examples -> ESP32".
The fastest and easiest way to test your NodeMCU ESP32 is to get the device number. Either copy the
code below or use the example "GetChipID":
To upload, click the upload buon from the Arduino IDE and hold down the "BOOT"-buon on the SBC
NodeMCU ESP32. The upload is completed unl the wring has reached 100% and you will be asked to
reboot (hard reseng via RTS pin ...) with the "EN" key.
You can show the output of the example in the serial monitor.
4. USAGE
uint64_t chipid;
void setup() {
Serial.begin(115200);
}
void loop() {
chipid=ESP.getEfuseMac();//The chip ID is essentially its MAC address
(length: 6 bytes).
Serial.printf("ESP32 Chip ID = %04X",(uint16_t)(chipid>>32));//print
High 2 bytes
Serial.printf("%08X\n",(uint32_t)chipid);//print Low 4bytes.
delay(3000);
}

NodeMCU ESP32
Published: 18.04.2019 Copyright by Joy-IT 7
5. SUPPORT
We also support you aer your purchase. If there are any quesons le or if you encounter any prob lems
please feel free to contact us by mail, phone or via our cket support system on our website.
E-Mail: [e-mail]
Ticket-System: hp://support.joy-it.net
Telefon: [phone] – 66 (11- 18 Uhr)
Visit our website for more informaons:
www.joy-it.net
Our take-back obligaons under the Electrical and Electronic Equipment Act (ElektroG)
Symbol on electrical and electronic equipment:
This crossed-out dustbin means that electrical and electronic equipment does not belong in household
waste. You must return the old devices to a collecon point. Before disposal, you must separate old
baeries and accumulators which are not enclosed in the old device from it.
Return opons:
As an end user, you can dispose of your old device (which essenally fulls the same funcon as the new
one purchased from us) free of charge when purchasing a new device.
Small appliances where no external dimensions are larger than 25 cm can be delivered in normal
household quanes, irrespecve of the purchase of a new appliance.
Possibility of return at our company during opening hours:
Simac GmbH, Pascalstr. 8, 47506 Neukirchen-Vluyn, Germany
Possibility of return in your area:
We will send you a parcel stamp with which you can return the device to us free of charge.
Please contact us by e-mail at [e-mail] or by phone.
Informaon about packaging:
If you do not have suitable packaging material or do not wish to use your own, please contact us and we
will send you suitable packaging. Please inform us if your device contains LiIon baeries in this case. an
addional warning label must be aached.
6. OTHER INFORMATIONS