Esp8266-Laser

Wifi Host for the Arduino-Laser-Spirograph

HTTP endpoints:

• /spirograph

  • GET returns laser and motor values (0 at startup)
  • POST sets new value(s)
    • laser=1-128 (1:permanent, 2-127 pulse, 128 off)
    • motor1=1-128
    • motor2=1-128
    • motor3=1-128

• /wificonfig ->

  • GET returns wifi settings
  • POST sets new wifi setting{s}
    • apMode=0: will try to connect to SSID first, 1: will directly start the AP
    • SSID=ssid
    • password=password
    • save=true will save config to spiffs, false will only change RAM variable (useful for onetime ap joins)
    • apply=true will reset wifi and try to connect with new param (buggy atm)

• /saveconf ->

  • POST write wificonfig to file (similar to wificonfig->save=true)

• /resetwifi ->

  • POST reconnect wifi (similar to wificonfig->apply=true)

• /heap ->

  • GET returns free heap of the ESP8266

• /files ->

  • GET returns list of files

• /presetMode ->

  • GET returns current mode
  • POST sets mode 0: presetsOff 1: cycle (not completed feature)

• /presets ->

  • GET returns /presets.json

Install

• install arduino ide (1.8.5) or PlatformIO (see Development section for further instructions)

• follow this instruction https://github.com/esp8266/Arduino#installing-with-boards-manager

• clone/exctract repo to sketchbook

• install this libaries https://github.com/plerup/espsoftwareserial https://github.com/bblanchon/ArduinoJson/

• follow this instruction: set wifi parameters in data/wifi.json before upload
  http://esp8266.github.io/Arduino/versions/2.0.0/doc/filesystem.html#uploading-files-to-file-system

You may also need to:

• get and install driver for nodemcu https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers

Development

PlatformIO

The project is intended to run on PlatformIO and the build environment is configured for NodeMCU 0.9 (ESP-12 Module).
More informations: http://docs.platformio.org/en/latest/platforms/espressif8266.html

Following libraries need to be installed via PIO Home / Libraries:

• SoftwareSerial
• ArduinoJson

Use following commands to build and upload the firmware and filesystem:

# clean the build directory  
pio run -t clean  

# run default build job  / build the formware
pio run  

# upload the firmware  
pio run -e nodemcu -t upload  

# build the filesystem  
pio run -t buildfs  

# upload the filesystem  
pio run -t uploadfs  

PlatformIO tasks can also be triggered with following npm run commands (pio / platformio executable needs to be in $PATH):

build:fs
upload:fs
build:firmware
upload:firmware

Frontend

Frontend development requires NodeJS / npm.
The development server watches all files in the frontend directory and automatically builds and copies the frontend code to the data folder.

# run development server on port 8080
npm run dev  
  
# build distribution source to data folder  
npm run build