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ccutrer / balboa_worldwide_app

Ruby library for communication with Balboa Water Group's WiFi module or RS-485
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GS 502 PCB only RJ45 connectors #40

Closed fwittenb closed 3 years ago

fwittenb commented 3 years ago

Hi, Thanks for. this great writeup - most current spa's have a new Balboa PCB board where the 4 wire connector is removed in total. I did do some testing waiting on a protocol analyser to finalise it. But someone might all-ready have solved it but i did not find it in the documentation, where only the 4 wire connection is documented so i'm looking for A and B channels in the 8 pin RJ-45 plug J1 and J2 in below image.

image of GS502

Below so far my measurements and findings i'm not seeing a 12V wire hence my ask and need to further investigate before connecting components and a pi to the spa. 

#| interface side | voltage | function |
#|----------------|---------|----------|
#|  pin 1         |  5.15v     vcc ?
#|  pin 2         |  0v        gnd ?
#|  pin 3         |  0.14v     copy of pin 4 or noice ? 
#|  pin 4         |  0.25v     clock - nice symetic signal 0-1
#|  pin 5         |            did not make sense yet
#|  pin 6         |  3.23v     ?
#|  pin 7         |  0v        gnd  copy ?
#|  pin 8         |  4.98v     vcc copy ?

Thanks Frans

bggardner commented 3 years ago

The RJ-45 plug uses a completely different protocol than the Molex connectors (not RS-485). This issue is more or less covered in #14.

netmindz commented 2 years ago

@fwittenb - Not sure how similar the GS range is to the GL, but as similar age, they might be more similar that the BS range. Might be worth following https://github.com/netmindz/balboa_GL_ML_spa_control