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PRO MICRO 5V 16MHZ Development Board - Micro Center
<main> <article class="userContent"> <h2 data-id="pro-micro-5v-16mhz-development-board"><strong>PRO MICRO 5V 16MHZ Development Board</strong></h2><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/1DAMQ7WX7SU1/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/1DAMQ7WX7SU1/image.png" alt="image.png" height="228" width="425" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="content"><strong>Content</strong></h3><p>1. Description</p><p>2. Specification</p><p>3. Pin Interfaces</p><p>4. Specialized Functions of Pins</p><p>5. Download the Arduino IDE</p><ul><li>Step 1 Installing Driver</li><li>Step 2 Set Boards Manager</li><li>Step 3 Arduino IDE Setting</li><li>4 Hello World!</li></ul><p>6. Package List</p><p><br></p><h2 data-id="1.-description">1. Description</h2><p>The processor core of Keyestudio PRO MICRO development board is ATMEGA32U4-MU, fully compatible with ARDUINO. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable to get started. </p><p>It has 18 digital input/output pins (of which 5 can be used as PWM output), 9 analog input, a 16 MHz crystal oscillator and a micro USB port. In addition, its working voltage is 5V and we can supply power via micro USB cable and port RAW GND (DC 7-9V). </p><p>It is easy to integrate this Micro in everyday objects to make them interactive.</p><p>To facilitate the physical design, the board is not welded with pin headers, so you can solder the pin headers by yourself. And the package includes 2pcs of yellow 1*12 2.54 straight pins and 1m black micro USB cable.</p><p> </p><h2 data-id="2.-specification">2. Specification</h2><ul><li>Microcontroller:ATMEGA32U4-MU</li><li>RAW: DC 7-9V</li><li>VCC: 5V at 500mA</li><li>Digital I/O Pins:18 (of which 5 provide PWM output)</li><li>Analog Input Pins:9</li><li>Maximum current for chip: 200mA</li><li>Maximum current per pin: 40mA</li><li>Recommended current per pin: 20mA</li><li>8-bit Atmel AVR</li><li>Flash Program Memory: 32kB</li><li>EEPROM: 1kB</li><li>Internal SRAM 2.5kB</li><li>ADC:10-bit</li><li>PWM:8bit</li></ul><p> </p><h2 data-id="pin-interfaces%3A"><strong>Pin Interfaces:</strong></h2><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/ZLGJE9QSLMZ3/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/ZLGJE9QSLMZ3/image.png" alt="image.png" height="492" width="472" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2></h2><h2 data-id="3.-specialized-functions-of-pins%3A">3. Specialized Functions of Pins:</h2><p><strong>Digital Port：</strong>RX（D0）、TX（D1）、D2-D10、D14-D16、A0-A3（D18-D21）</p><p><strong>Analog Port：</strong>A0-A3、D4（A6）、D6（A7）、D8（A8）、D9（A9）、D10（A10）</p><p><strong>PWM Port (Pulse-Width Modulation): </strong>D3、D5、D6、D9、D10</p><p><strong>External interrupt</strong>: D3(interrupt 0), D2(interrupt 1), D0(interrupt 2), D1(interrupt 3) and D7(interrupt 4)</p><p><strong>Serial Communication Port: </strong>RX (D0) ,TX (D1)</p><p><strong>SPI Communication Port: </strong>D14 (MISO), D15 (SCLK) and D16 (MOSI)</p><p><strong>I2C Communication Port: </strong>D2 (SDA) and D3 (SCL）</p><p><strong>RAW: </strong>External power DC 7-9V</p><p><br></p><h2 data-id="4.-download-the-arduino-ide"><strong>4. Download the Arduino IDE</strong></h2><p>Enter Arduino IDE official website：<a href="https://www.arduino.cc/" rel="nofollow noreferrer ugc">https://www.arduino.cc/</a>，</p><p>Click the <strong>"SOFTWARE" </strong>tab.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/IHXB64RDL66R/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/IHXB64RDL66R/image.png" alt="image.png" height="240" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/ZAEOPEED8TU1/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/ZAEOPEED8TU1/image.png" alt="image.png" height="239" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="you-can-download-1.8.13-version"><strong>You can download 1.8.13 version</strong></h3><h3 data-id="in-this-project-we-use-1.8.12-version"><strong>In this project, we use 1.8.12 version</strong></h3><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/865GHHNEFKDJ/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/865GHHNEFKDJ/image.png" alt="image.png" height="237" width="341" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <p>Click<strong> "Previous Release (1.8.12)" </strong> to select the file to be installed.</p><p>You need to install it manually if you click "Windows Installer", however, the file can be installed directly if you click<strong> "Windows ZIP file for non admin install"</strong></p><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/3K4GRQJFISQ4/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/3K4GRQJFISQ4/image.png" alt="image.png" height="310" width="379" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <h2 data-id="-1"></h2><h2 data-id="5.1-installing-driver">5.1 Installing Driver</h2><h3 data-id="windows-10%3A"><strong>Windows 10:</strong></h3><p>The driver will be automatically installed if you plug control board to your computer. Then the COM port is show below:</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/U2PMG2AJLHLE/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/U2PMG2AJLHLE/image.png" alt="image.png" height="469" width="634" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>You need to install it manually if your computer is other Windows system.</p><p>We will take win7 system as example.</p><p> </p><p>1. Place the <strong>driver folder</strong> on your desktop.</p><p>The driver files are shown below:</p><div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/JHDXMK649PL9/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/JHDXMK649PL9/image.png" alt="image.png" height="77" width="109" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <p>2. Connect board to your PC with Micro USB cable, open device manager.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/XCB7AY3ON1HJ/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/XCB7AY3ON1HJ/image.png" alt="image.png" height="395" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>3. Right-click it and yellow exclamation mark appears</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/TI6YI56XG9PL/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/TI6YI56XG9PL/image.png" alt="image.png" height="385" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>4. Click “Browse.....manually”</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/QASYZK2UN9EQ/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/QASYZK2UN9EQ/image.png" alt="image.png" height="387" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>5. Find the “drivers” file, and tap “Next”.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/QGU1XSWVN1ST/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/QGU1XSWVN1ST/image.png" alt="image.png" height="386" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>6. Click “install this driver software anyway”</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/D0VH6K3X591C/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/D0VH6K3X591C/image.png" alt="image.png" height="390" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>7. Then click “Close” and check the serial port.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/F3W1H5BV15NO/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/F3W1H5BV15NO/image.png" alt="image.png" height="388" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/F3SW2JP5RXYD/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/F3SW2JP5RXYD/image.png" alt="image.png" height="392" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h2 data-id="5.2-set-boards-manager">5.2 Set Boards Manager</h2><p>We need to set board before using it. Firstly we need to add the website of board manager in the <strong>"Preferences"</strong></p><p><strong>Website</strong>: <a href="https://raw.githubusercontent.com/sparkfun/Arduino_Boards/master/IDE_Board_Manager/package_sparkfun_index.json" rel="nofollow noreferrer ugc">https://raw.githubusercontent.com/sparkfun/Arduino_Boards/master/IDE_Board_Manager/package_sparkfun_index.json</a></p><p><strong>As shown below:</strong></p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/NWGB3MFD44FC/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/NWGB3MFD44FC/image.png" alt="image.png" height="499" width="417" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/BOXPECQ11S9Q/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/BOXPECQ11S9Q/image.png" alt="image.png" height="350" width="577" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="then-restart-arduino-ide.">Then restart Arduino IDE.</h3><h3 data-id="the-board-is-shown-below%3A">The board is shown below:</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/2JOS58TBMJKS/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/2JOS58TBMJKS/image.png" alt="image.png" height="439" width="568" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="search-sparkfun-and-install-the-related-files.">Search <strong>sparkfun</strong> and install the related files.</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/TJZ3F8B121OD/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/TJZ3F8B121OD/image.png" alt="image.png" height="300" width="577" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="click-close-when-the-installation-is-finished.">Click “Close” when the installation is finished.</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/IU6XFJR92FIX/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/IU6XFJR92FIX/image.png" alt="image.png" height="325" width="577" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="then-find-%22sparkfun-pro-micro%22-as-follows%3A">Then find<em> "</em><strong><em>SparkFun Pro Micro</em></strong><em>"</em> as follows:</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/SR7UW8I34OKG/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/SR7UW8I34OKG/image.png" alt="image.png" height="485" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="-2"></h3><h2 data-id="5.3-arduino-ide-setting"><strong>5.3 Arduino IDE Setting</strong></h2><h3 data-id="click-icon-open-arduino-ide.">Click icon, open Arduino IDE.</h3><div class="embedExternal embedImage display-small float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/LO9YJD40HN75/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/LO9YJD40HN75/image.png" alt="image.png" height="71" width="56" loading="lazy" data-display-size="small" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/YREHQBZ5PJUS/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/YREHQBZ5PJUS/image.png" alt="image.png" height="545" width="455" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p>To avoid the errors when uploading the program to the board, you need to select the correct Arduino board that matches the board connected to your computer.</p><h3 data-id="then-come-back-to-the-arduino-software-you-should-click-toolsboard-select-the-board.">Then come back to the Arduino software, you should click Tools→Board, select the board. </h3><p>(as shown below)</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/ZYGUDAVA5V6K/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/ZYGUDAVA5V6K/image.png" alt="image.png" height="545" width="455" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="then-select-the-correct-working-frequency">Then select the correct working frequency</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/RW6IR35FYIXC/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/RW6IR35FYIXC/image.png" alt="image.png" height="530" width="603" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="then-select-the-correct-com-port-(you-can-see-the-corresponding-com-port-after-the-driver-is-successfully-installed).">Then select the correct COM port (you can see the corresponding COM port after the driver is successfully installed).</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/V3BPOUK86YCS/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/V3BPOUK86YCS/image.png" alt="image.png" height="530" width="518" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="-3"></h3><h3 data-id="before-uploading-the-program-to-the-board-lets-demonstrate-the-function-of-each-symbol-in-the-arduino-ide-toolbar.">Before uploading the program to the board, let’s demonstrate the function of each symbol in the Arduino IDE toolbar.</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/TPKCDLQTMSDN/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/TPKCDLQTMSDN/image.png" alt="image.png" height="530" width="442" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h4 data-id="a-used-to-verify-whether-there-is-any-compiling-mistakes-or-not.">A- Used to verify whether there is any compiling mistakes or not.</h4><h4 data-id="b-used-to-upload-the-sketch-to-your-arduino-board.">B- Used to upload the sketch to your Arduino board.</h4><h4 data-id="c-used-to-create-shortcut-window-of-a-new-sketch.">C- Used to create shortcut window of a new sketch.</h4><h4 data-id="d-used-to-directly-open-an-example-sketch.">D- Used to directly open an example sketch.</h4><h4 data-id="e-used-to-save-the-sketch.">E- Used to save the sketch.</h4><h4 data-id="f-used-to-send-the-serial-data-received-from-board-to-the-serial-monitor.">F- Used to send the serial data received from board to the serial monitor.</h4><p><br></p><h2 data-id="5.4-hello-world!">5.4 Hello World!</h2><p>Copy the following code to Arduino IDE.</p><pre class="code codeBlock" spellcheck="false" tabindex="0">int val; int ledpin=13; void setup() { Serial.begin(9600); pinMode(ledpin,OUTPUT); } void loop() { val=Serial.read(); if(val=='R') { digitalWrite(ledpin,HIGH); delay(500); digitalWrite(ledpin,LOW); delay(500); Serial.println("Hello World!"); } } </pre><h3 data-id="set-board-and-com-port-the-corresponding-board-and-com-port-are-shown-on-the-lower-right-of-ide.">Set board and COM port, the corresponding board and COM port are shown on the lower right of IDE.</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/2CHI5T4F05R2/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/2CHI5T4F05R2/image.png" alt="image.png" height="530" width="442" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <h3 data-id="click-the-check-mark-to-start-compiling-the-program-and-check-errors.">Click the Check Mark to start compiling the program, and check errors.</h3><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/B0RXI6XAP7T3/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/B0RXI6XAP7T3/image.png" alt="image.png" height="428" width="357" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/6SAJED4TK39X/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/6SAJED4TK39X/image.png" alt="image.png" height="428" width="357" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <h3 data-id="click-to-upload-the-program-upload-successfully.">Click <strong>→ </strong>to upload the program, upload successfully.</h3><div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/H1H04KYFRX47/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/H1H04KYFRX47/image.png" alt="image.png" height="409" width="341" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <div class="embedExternal embedImage display-medium float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/WBPHCLSASAKG/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/WBPHCLSASAKG/image.png" alt="image.png" height="409" width="341" loading="lazy" data-display-size="medium" data-float="none"></img></a> </div> </div> <h3 data-id="tap">Tap</h3><div class="embedExternal embedImage display-small float-left"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/AX5RKLFPFEZ6/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/AX5RKLFPFEZ6/image.png" alt="image.png" height="21" width="24" loading="lazy" data-display-size="small" data-float="left"></img></a> </div> </div> <h3 data-id="to-open-serial-monitor-set-baud-rate-to-9600-input-%22r%22-and-click-send.-then-rx-indicator-flashes-and-serial-monitor-shows-%22hello-world!%22-which-means-%22hello-world!%22-is-sent-by-pro-micro-development-board.">to open serial monitor, set baud rate to 9600, input "R" and click “Send”. Then RX indicator flashes and serial monitor shows "Hello World!", which means "Hello World!" is sent by PRO MICRO development board.</h3><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://us.v-cdn.net/6031942/uploads/AE5HJVILFV1V/image.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6031942/uploads/AE5HJVILFV1V/image.png" alt="image.png" height="240" width="530" loading="lazy" data-display-size="large" data-float="none"></img></a> </div> </div> <p></p><p><br></p><h3 data-id="-4"></h3> </article> </main>
