• Updated a failure of the intepretation of "9" in Balboa_GS_Interface.cpp
• Changed to ElegantOTA in Balboa_GS_MQTT.ino
• Added Stop and Reset MQTT interface in Balboa_GS_MQTT.ino

• New function updateTemperature added to set a temperature value instead of "push" button x number of times
• Balboa_GS_MQTT sketch updated with AsyncElegantOTA

• Basic functionality to read and set status using a Balboa_GS developed library. Two examples are provided, first with simple read and set functionality and the second using MQTT for remote access.

PWM output from control system, same on both pins. Unclear functionality for these PINs still! Maybe some internal light supply?

50Hz, pk-pk=18v, mean 5V

• The clock is pulsing 7 times for each chunck of display data, totaly 39 bits and 3 times for button data. A complete cycle 42 pulses.
  
• Totaly of 6 display data chunks in each cycle
  
• Each cycle is repeted every 20 ms
  
• One total cycle duration 1.88 ms
• Bit duration for display data is 10 microseconds for display data
  
• Bit duration for button data is 60 microseconds
  

Display shows 37.5C - How does that translates into the bitstream? The first 4 chunks is coded in BCD to 7 segment LCD (see reference) but only with 7 bits sinse the LSB always is (0).
3 = 1111001(0) = 0x79 (Chunk 1)
7 = 1110000(0) = 0x70 (Chunk 2)
5 = 1011011(0) = 0x5B (Chunk 3)
C = 1001110(0) = 0x4E (Chunk 4)

Since the display and controler unit hardware design is unknown an OR-gate is used to prevent damage if simultaneous HIGH/LOW levels from display and Arduino.

Gerber files located here: PCB Balboa-GS510SZ

• https://github.com/NickB1/OpenSpa/blob/master/documents/Balboa/Balboa_Display_Measurements.pdf
• https://www.olivierhill.ca/archives/72-The-Internet-of-Spas.html
• https://create.arduino.cc/projecthub/meljr/7-segment-led-displays-102-using-a-shift-register-6b6976

• GL2000 Series https://github.com/netmindz/balboa_GL_ML_spa_control
• BP Series https://github.com/ccutrer/balboa_worldwide_app