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| =NodeMCU Devkit=
| | #REDIRECT [[MicroPython]] |
| [[File:Nodemcu.jpg]] | |
| *ESP8266 a microcontroller from Espressif
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| *Integrated WiFi
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| *80MHz clock speed
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| =MicroPython=
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| [https://docs.micropython.org/en/latest/pyboard/ https://docs.micropython.org/en/latest/pyboard/]
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| =Install=
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| [http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/intro.html#deploying-the-firmware http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/intro.html#deploying-the-firmware]
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| [http://micropython.org/download#esp8266 http://micropython.org/download#esp8266]
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| <syntaxhighlight lang="bash">
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| wget http://micropython.org/resources/firmware/esp8266-20171101-v1.9.3.bin
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| pip install esptool
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| esptool.py --port /dev/ttyUSB0 write_flash 0 esp8266-20171101-v1.9.3.bin
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| </syntaxhighlight>
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| <syntaxhighlight lang="bash">
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| esptool.py --port /dev/ttyUSB0 erase_flash
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| </syntaxhighlight>
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| <syntaxhighlight lang="bash">
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| esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=8m 0 esp8266-20171101-v1.9.3.bin
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| </syntaxhighlight>
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| =Connect through serial=
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| <syntaxhighlight lang="bash">
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| screen /dev/ttyUSB0 115200
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| </syntaxhighlight>
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| Stäng screen: Ctrl+A, k, y
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| =Connect to WiFi=
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| [http://docs.micropython.org/en/v1.8.7/esp8266/esp8266/tutorial/network_basics.html http://docs.micropython.org/en/v1.8.7/esp8266/esp8266/tutorial/network_basics.html]
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| <syntaxhighlight lang="bash">
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| import network
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| ap_if = network.WLAN(network.AP_IF)
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| ap_if.disconnect()
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| sta_if = network.WLAN(network.STA_IF)
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| sta_if.active(True)
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| sta_if.connect('SSID', 'password')
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| </syntaxhighlight>
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| <syntaxhighlight lang="bash">
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| sta_if.ifconfig()
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| </syntaxhighlight>
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| =HTTP GET=
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| <syntaxhighlight lang="bash">
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| import urequests
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| response = urequests.get("http://tim.gremalm.se/hello")
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| response.text
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| response.close()
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| </syntaxhighlight>
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| =WS2812=
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| [http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/neopixel.html http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/neopixel.html]
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| <syntaxhighlight lang="bash">
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| from machine import Pin
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| from neopixel import NeoPixel
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| np = neopixel.NeoPixel(machine.Pin(2), 3)
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| np[0] = (255, 0, 0)
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| np[1] = (0, 128, 0)
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| np[2] = (0, 0, 64)
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| np.write()
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| </syntaxhighlight>
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| =GPIO=
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| [https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/pins.html https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/pins.html]
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| <syntaxhighlight lang="bash">
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| from machine import Pin
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| button = Pin(0)
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| button = Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)
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| pin.value()
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| </syntaxhighlight>
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| [https://github.com/nodemcu/nodemcu-devkit]
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| [[File:NodeMCUPinout.png]]
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| =File system on flash=
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| <syntaxhighlight lang="bash">
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| import os
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| os.listdir()
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| os.remove('filename')
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| </syntaxhighlight>
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| =Connect through websocket=
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| [https://micropython.org/webrepl/ https://micropython.org/webrepl/]
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| [https://learn.adafruit.com/micropython-basics-esp8266-webrepl/access-webrepl https://learn.adafruit.com/micropython-basics-esp8266-webrepl/access-webrepl]
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| <syntaxhighlight lang="bash">
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| import webrepl_setup
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| </syntaxhighlight>
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