OpenStill

Project for controlling still. Developed for ESP8266.

Functions

• Controlling power of the heater via SSR (0-100%)
• Shows temperature from 4 sensors (DS18B20) on 20x4 I2C LCD screen
• Show if temperature is rising or dropping
• Show ABV of vapour in head
• Show amount of alcohol left in tank
• Sensor temperature limit - turns off heater when temperature on sensor is reached
• CSV data export with temperatures
• Initial Wifi access point mode for wifi configuration
• Web server with:
  • live temperatures (1s refresh)
  • heater control
  • live charts
  • notifications
  • heater off temperature limit
  • temperature of the day for 10 shelf notifications
  • sensor assignment
  • csv log download
  • csv file reset

Hardware

• Project is developed on WeMos ESP8266 v3 (also checked on NodeMCU v3)
• 4 sensors DS18B20 in parasite mode connected to pin D7 with 4.7K resistor
• SSR connected to D4
• I2C 20x4 LCD - how to connect

Dependencies

• Developed using PlatformIO IDE
• TaskManagerIO
• LiquidCrystalIO
• OneWire
• DallasTemperature
• IoAbstraction
• ESPAsyncWebServer
• ArduinoJson

License

MIT

Installation

Download ESP flash download tool:

https://www.espressif.com/sites/default/files/tools/flash_download_tool_v3.8.5.zip

Download bin files:

https://github.com/stefunkk/OpenStill/releases/download/0.9-rc/spiffs.bin https://github.com/stefunkk/OpenStill/releases/download/0.9-rc/firmware.bin

Choose SPI Mode - DOUT

Add firmware.bin with address 0x00000 Add spiffs.bin with address 0x00300000 (unsure if that's the address for all devices, or just for mine NodeMCU ESP8266 12-E v3 4mb flash)

Flash

Restart

Connect with OpenStill wifi, update wifi settings, restart device.

Done

Notification configuration

Get the code from https://pushme.now.sh/

Go to "Others" tab, input Notifications code and click "Set" and then "Test" to see if it works