Domopool

Goal

The goal of this project is to automatise some parts of my pool, mainly the flter pump based on the water temperature. There is also an option to use a ph pump.

Hardware

The base hardware is an esp32 devkitC. Other hardware:

• Box: arduitouch
  • LCD: Ili9341 240x320 RGB touch screen
  • Power: Integrated 5V voltage regulator (input voltage 9 - 35V DC)
  • Built-in piezo buzzer
• Controler: ESP32 board
• Temperatures (water and ambiant): 2 DS18B20
• Water pressure: GS07381-06 (200PSI) amazon
• RTC: DS3231 amazon
• ADC: ADS1115 az-delivery
• LevelShifter: TXS0108E az-delivery
• Relay: 4-relay module 5V with optocoupler low-level trigger az-delivery

Pictures

• The box

• The pressure sensor on top of the sand filter

  Funtionalities

• Read/write configuration from preferences (nvs storage)
• Mesure water temperature, ambiant temperature and water pressure
• Auto-detect DS18B20 (temperature sensors)
• Avaluate filtering time based on day hour and water temperature
• Get/Set values through grpc request
• Set time with ntp
• Send data with mqtt
• alarms on temperatures and pressure
• frost protection
• low/high pressure protection

Configuration

To ease configuration update 2 front-end are under developement:

• CLI: https://github.com/golgoth31/domopool-cli
• UI: https://github.com/golgoth31/domopool-cli/tree/master/web

Temp/filter time

The local table is defined like this:

Temp	Hour	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
t<1		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
1<t<3					X	X
3<t<6					X	X
6<t<9						X	X						X
t=6						X	X						X
t=7							X					X	X
t=8												X	X			X
t=9											X	X	X			X
9<t<12										X	X	X				X
12<t<15										X	X	X				X	X
15<t<18										X	X	X				X	X	X
18<t<21										X	X	X	X			X	X	X
21<t<23										X	X	X	X			X	X	X	X
23<t<26					X	X				X	X	X	X			X	X	X	X	X
26<t<28					X	X	X			X	X	X	X			X	X	X	X	X	X
28<t<30					X	X	X	X		X	X	X	X			X	X	X	X	X	X	X
30<t		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X

Other table exemples:

• from 1

• from https://www.piscine-center.net/gestion-de-la-filtration-et-de-l-electrolyseur.html

  

• from https://www.perfeco-f.fr/index.php/le-perfeco

  

ToDo

• set hour if ntp and rtc are not ok
• add Hbridge driver for peristaltic pump (ph)
• add ability to redefine filter pump steps