Hardware project for displaying Reef-pi data and some simple button based controls, so you don't need to use your phone to check the temperature/PH of your reef tank

This is intended to use with a Reef-pi controller, and will use it's API to retrieve basic data and to trigger actions such as a Macro on the Reef-pi

• I'm walking by my tank and want to know the temp or if anything is awry
• Every morning or so I add some frozen food, but want to disable the pumps while the food is floating around.
• Adjusting lighting Turn On/Off/Lower reef-pi controlled lights

• At A glance - "Is Everything Ok?" ---> LCD Display will be backlit Blue/Yellow/Red if temp/Ph is outside of set limits
• Display some simple textual data on an LCD Screen by the Tank
  • Always show: Current Temperature + PH
  • If error conditions come up - then change display color and display the problems:
    • RO Top Off Reservoir level (Low = Yellow, Empty=Red Light, needs filling)
    • Skimmer Overflowed tripped switch (Needs cleaning)
• Single Press Buttons to control:
  • Feed Mode (enabling - turns off return pump and wavemaker so fish can eat in peace for 15mins)
  • Macros - Programmable Macro Control Button
    • Specify a Macro that will be triggered when the button is pushed
    • OR Specify multiple Macros to execute, then allow the user to choose from a list.
  • Take a Pic!
    • Tell reef-pi to take a photo with it's camera because something cool is happening
• Configuration:
  • Initial WIFI config is done via Flash step?
  • Configuration of Macros/Buttons/Display options is done by logging into a basic Web Interface
• Installation:
  • Allow a User to flash the ESP32 via a website

Buttons:

• Status (Main Screen)
• Feed button (Feed Screen)
• Macro Button (Macro Screen)
• LEFT/RIGHT Buttons to Navigate
• ? "Photo" button (triggers taking a picture in Reef-pi)

Parts of App:

• LCD: Status Screen

  • Display key Stats: Temperature and PH Level
  • Set Backlight of LCD to GREEN if Temp/Ph levels are between X/Y
  • Display time of the last logged error and text "scrolling") Push button 1 -> Status Scren: More Info
    • Temp: "78.4 Now, was 78.2 1 hr ago"
    • pH: "7.8 now, was 8.1 1 hr ago" Push Button 1 -> Status Screen: Error Info
    • Show the last error message(s)

• LCD: Feed Mode

  • Starts after pushing "Feed" button
  • Show "Feeding Time!" and a Countdown timer ("13:22 remaining...or until you push the button").
  • Set Backlight to Yellow while ON, back to Green (if in range) when done
  • After countdown, flash BLUE, then return to status screen.
  • If just running a Macro, display the text message "Running XYZ Macro"

• LCD: Macro Button Mode

  • If only 1 Macro ID specified in Config, then run that Macro and show the text specified in the config (ie:"Yo dawg, adding mysis shrimp, cause i heard you like shrimp") for 3 secs, then return to Status Mode.
  • If multiple Macros specified, show list.
    • User can select macro from list with LEFT/RIGHT buttons
    • Press "Macro" button again to select and run.
    • Run that Macro and show the text specified in the config (ie:"Yo dawg, adding copepods, cause i heard you like pods") for 3 secs, then return to Status Mode.

• LCD: Photo Taken

  • If the Camera isn't setup on reef-pi, return an error "Setup your camera!"
  • Send "Take Pic" request via API to reef-pi, Random Witty comment: "I saw that too! Crazy!", "I can't believe the gall of that Tang" or something small.
  • Display for 1 second, then back to Main screen

• WEB Page: Configuration Area:

  • Set Wifi
  • Set Temperature
    • Set preference for C/F? or auto?
    • Which Thermometer probe to use and display
  • Set PH
    • Set PH Probe to Use
  • Set Reef-Pi login info
    • Set polling time for API queries
  • Set Feed Button:
    • feeding time in minutes
    • Set a Macro to run after feeding time
      • Alternatively - override "Feed" button to just run a Macro and display text "XYZ"
  • Set Macro Button:
    • Allow user to add a Macro ID (or select from a list retrieved via API)
      • Allow user to specify the text to be displayed on the LCD when running the macro
  • LCD Display Type:
    • Configure: OLED Display via I2C
    • Configure: RGB LCD 20x4 or 16x2 display size

• RGB Backlit LCD Screen (see Adafruit)
  • Alernative: OLED display (~$8)
• ESP32 Controller
• Some Push-Buttons
• A 3d Printed Enclosure of some sort