Chapter 1 LED (Important) ========================= This chapter is the Start Point in the journey to build and explore ESP32-S3 WROOM electronic projects. We will start with simple “Blink” project. Project 1.1 Blink ------------------------ In this project, we will use ESP32-S3 WROOM to control blinking a common LED. Power ESP32-S3 WROOM needs 5v power supply. In this tutorial, we need connect ESP32-S3 WROOM to computer via USB cable to power it and program it. We can also use other 5v power source to power it. Component List ^^^^^^^^^^^^^^^ - ESP32-S3 WROOM x1 - USB cable x1 Component knowledge ^^^^^^^^^^^^^^^^^^^^ :ref:`LED ` """""""""""""""""""" :ref:`Resistor ` """"""""""""""""""""""""""""""""""""" :ref:`Breadboard ` """""""""""""""""""""""""""""""""" Connect ^^^^^^^^^^^^^^^ Power ESP32-S3 WROOM needs 5v power supply. In this tutorial, we need connect ESP32-S3 WROOM to computer via USB cable to power it and program it. We can also use other 5v power source to power it. .. image:: img/0/connect1.png In the following projects, we only use USB cable to power ESP32-S3 WROOM by def ault. In the whole tutorial, we don’t use T extension to power ESP32-S3 WROOM. So 5V and 3.3V (includeing EXT 3.3V) on the extension board are provided by ESP3 2-S3 WROOM. We can also use DC jack of extension board to power ESP32-S3 WROOM. In this way, 5v and EXT 3.3v on extension board are provided by external power resource. Code ^^^^^^^^ Codes used in this tutorial are saved in :file:`Super_Starter_Kit_for_ESP32_S3/Python/Python_Codes`. You can move the codes to any location. For example, we save the codes in Disk(D) with the path of “D:/Micropython_Codes”. **01.1_Blink** Open “Thonny”，click “This computer”>>“D:”>>“Micropython_Codes”. .. image:: img/software/1.0.png Expand folder “01.1_Blink” and double click “Blink.py” to open it. As shown in the illustration below. .. image:: img/software/1.1.png Make sure ESP32-S3 has been connected with the computer with ESP32-S3 correctly. Click “Stop/Restart backend” or press the reset button, and then wait to see what interface will sho w up. .. image:: img/software/1.2.png Click “Run current script” shown in the box above，the code starts to be executed and the LED in the circuit starts to blink. .. note:: This is the code running online. If you disconnect USB cable and repower ESP32-S3 or press its reset key, LED stops blinking and the following messages will be displayed in Thonny. .. image:: img/software/1.3.png **Uploading code to ESP32S3** As shown in the following illustration, right-click the file Blink.py and select “Upload to /” to upload code to ESP32S3. .. image:: img/software/1.4.png Upload boot.py in the same way. .. image:: img/software/1.5-1.png .. image:: img/software/1.5-2.png .. image:: img/software/1.5.png Press the reset key of ESP32-S3 and you can see LED is ON for one second and then OFF for one second, which repeats in an endless loop. If you want to exit the offline operation mode, you can press Ctrl+C at the same time in the shell to let the ESP32-S3 exit the offline operation mode. .. image:: img/software/1.6.png If there is no response after pressing, it is recommended to press again until exiting. .. code-block:: python from time import sleep_ms from machine import Pin led=Pin(2,Pin.OUT) #create LED object from pin2,Set Pin2 to output try: while True: led.value(1) #Set led turn on sleep_ms(200) led.value(0) #Set led turn off sleep_ms(200) except: pass Project 1.2 Blink ----------------- In this project, we will use ESP32-S3 WROOM to control blinking a common LED. Component List ^^^^^^^^^^^^^^^^^ - ESP32-S3-WROOM x1 - GPIO Extension Board x1 - 830 Tie-Points Breadboard x1 - LED x1 - Resistor 220Ω x1 - Jumper Wire x2 Connect ^^^^^^^^^ .. image:: img/connect/1.png Code ^^^^^ Codes used in this tutorial are saved in :file:`Super_Starter_Kit_for_ESP32_S3/Python/Python_Codes`. You can move the codes to any location. For example, we save the codes in Disk(D) with the path of “D:/Micropython_Codes”. **01.1_Blink** Open “Thonny”，click “This computer”>>“D:”>>“Micropython_Codes”. .. image:: img/software/1.0.png Expand folder “01.1_Blink” and double click “Blink.py” to open it. As shown in the illustration below. .. image:: img/software/1.1.png Make sure ESP32-S3 has been connected with the computer with ESP32-S3 correctly. Click “Stop/Restart backend” or press the reset button, and then wait to see what interface will show up. .. image:: img/software/1.2.png Click “Run current script” shown in the box above，the code starts to be executed and the LED in the circuit starts to blink. .. note:: This is the code running online. If you disconnect USB cable and repower ESP32-S3 or press its reset key, LED stops blinking and the following messages will be displayed in Thonny .. image:: img/software/1.3.png **Uploading code to ESP32S3** As shown in the following illustration, right-click the file Blink.py and select “Upload to /” to upload code to ESP32S3. .. image:: img/software/1.4.png Upload boot.py in the same way. .. image:: img/software/1.5.png Press the reset key of ESP32-S3 and you can see LED is ON for one second and then OFF for one second, which repeats in an endless loop. Press the reset key of ESP32-S3 and you can see LED is ON for one second and then OFF for one second, which repeats in an endless loop. If you want to exit the offline operation mode, you can press Ctrl+C at the same time in the shell to let the ESP32-S3 exit the offline operation mode. .. image:: img/software/1.6.png If there is no response after pressing, it is recommended to press again until exiting.