Quickstart Guide: Programming the Arduino ESP 8266

Transcription

1 Quickstart Guide: Programming the Arduino ESP 8266 V1.0 - March 2018 Part 1: Setting up the Arduino 1. Connect to your wireless network 2. Install Arduino software from 3. Check if Windows automatically installs CP2112 USB-UART driver. Else, download driver from: NOTE for MAC users: Go to the Appendix at the back for help on how to install driver. 4. Connect Arduino board via USB cable to PC 5. Add Additional Board Manager URLs: FILE -> Preferences 1

2 6. Include ESP8266 Board libraries: Tools -> Board -> Board Manager. Type ESP8266 and click on the found module to install. Click to install 7. Select board NodeMCU 0.9. Tools -> Board -> NodeMCU 0.9 (scroll down to find it) 2

3 8. Select port (yours may be a different number, COM X ). Tools -> Port COM 9. Set upload speed to or Tools -> Upload Speed -> or 9600 Ready for the first program 3

4 Part 2: Running the Blink Program 10. Open the File -> Examples -> Basics -> Blink 11. Investigate the program which function blocks do what? Check that the LED is blinking properly. Hint: Compile and Upload are in the top left corner of the IDE: Part 3: Morse code 12. Alter the blink program to Morse SOS. Save the Blink program with name: Morse_SOS_yourname 13. A few tips: All timings are defined as multiples of one dot length A dash is three times the length of a dot Each dot or dash has a short gap of silence after it (usually 1 dot length) Letters in a word have a slightly longer gap of silence between them (usually 3 dot lengths) Words have an even longer gap of silence between them (usually 7 dot lengths) 4

5 Please note: (Solution example provided at the end of document) Arduino 8266 LED_BUILTIN: DigitalWrite HIGH -> LED off; DigitalWrite LOW -> LED on; Part 4: Morse your name 14. Alter the blink program to Morse your name. Save the Blink program with name: Morse_NAME_yourname Want to know more about DTU Fotonik: Go to Check out our education profile, courses and research areas. For information on our B.Sc. programme on Network Technology and IT, please visit: For questions, feel free to contact B.Sc. Head of Studies Henrik Wessing at For High Schools, we offer: We hope to welcome you as our future students - Workshops on Internet of Things programming with Arduino - SRP projects (Build your own Earthquake Warning System) Please contact: Sarah Ruepp (srru@fotonik.dtu.dk) or Martin Nordal Petersen (mnpe@fotonik.dtu.dk) 5

6 Appendix: Screenshots for MAC users Go to and download the OSX driver. See screenshot below. After downloading open/unzip the zip file and double click on the SiLabs USB Driver Disk.dmg file to install the driver. 6

7 After successfull installation you should see something like this: After driver installation, in Arduino IDE, go to tho Tools -> Board manager and click on Boards Manager 7

8 In Boards Manager search for esp8266 and install this board. Now go to Arduino IDE, and open Tools -> Board menu. You should now find NodeMCU Select NodeMCU 0.9 (ESP.. 8

9 Finally, to select the correct port go to Tools -> Port and select the one named something like SLAB_USBtoUART Now you can open the Blink sketch: 9

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11 Solution example to SOS: // S:... // O: --- // S:... // Please note for Ardudino 8266: DigitalWrite HIGH -> LED off; DigitalWrite LOW -> LED on; const byte ledpin = LED_BUILTIN; // specify which pin is connected to the LED (here built-in LED) const unsigned int delaytime = 300; // specify delay time void setup() { pinmode(ledpin, OUTPUT); // set mode of ledpin to OUTPUT } void loop() { flash(delaytime); flash(delaytime); flash(delaytime); // S (three short pulses) -> see flash function below delay(3*delaytime); // pause between letters flash(3*delaytime); flash(3*delaytime); flash(3*delaytime); // O (three long pulses) delay(3*delaytime); // pause between letters flash(delaytime); flash(delaytime); flash(delaytime); // S (three short pulses) digitalwrite(ledpin,high); // turn off LED delay(7*delaytime); // pause between words } void flash(int flashduration) { digitalwrite(ledpin,low); // turn on LED delay(flashduration); // pause keep LED on digitalwrite(ledpin,high); // turn off LED delay(flashduration); // keep LED turned off } 11