Lay-Z-Spa Palm Spring - 4 wires - 5V, Ground

[nosaltomas]

Hi,
at first BIG thanks to YOU for this project. It is excelent update for my old SPA.

I have feedback related to:
PalmSpring 4 wires 51154
PCB V2B
TXS0108E and 10kohm resistor
ESP8266 Lua NodeMcu V3 WIFI CH340

wires:
Ground,TX,RX,5V
see picture

CIO rx-2 tx-5
DSP tx-4 rx-3

[nosaltomas]

MQTT is also great. Working with HA perfectly. Thank you

[visualapproach]

Thanks for sharing! Glad that you're happy 😃