WiFi-remote-for-Bestway-Lay-Z-SPA

ESP8266 hack to use as WiFi remote control for Bestway Lay-Z-Spa Whirlpools (including 2021 year models)

Check out what is new i the release notes. (Link in the right column on this page - release version)

Latest code found in Development branch Build instructions and more: Read the manual
Check out releasenotes by clicking the release version to the right on this page.

Features
BOM
Web Interface
WiFi Module / Pump
Schematics
Installation
Installation (Alternative)
Problems?

Disclaimer

As mentioned, this is a hack. If anything breaks it is your fault.

Caution

Pull out the mains plug before modifying hardware, or you can die!

Donate

If you like this project, please consider a donation. Buy me a coffee, thanks!

Features

Control buttons, watch the temperature and get current states from your browser.
Custom text on the SPA pump display.
Custom sound instead of just beeping is possible.
OTA: Update firmware "over the air". Super convenient when mounted inside the pump.
Simple to build. No hardware changes needed on the SPA pump. Just remove the display, disconnect the 6- or 4-pin ribbon cable and plug it into this device.
Timer for chlorine addition and filter change. Hit the button on the web interface and it will count the days for you. (@Bankaifan)
Electricity cost estimation and more..
MQTT support! Now you can control the SPA from Home Assistant, OpenHab etc. (@faboaic, @877dev)
Schedule events like heater on/off at specific dates, with repeat functionality.
Listen to input signal on one pin and trigger a signal on another pin on desired events. For instance let solar panels turn on/off heater.

BOM

ESP8266 NodeMCU 1.0 (NOT for ESP32)
8 channel bidirectional level converter
6 or 4 pin male header (0.1 in spacing) or better: JST-SM Housing Connector
6 or 4 pin female header (JST-SM Housing Connector) see build instructions for more info.