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pruwait / Nice_BusT4

Nice Bus T4 protocol
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Vsb is not always 24V #4

Closed xdanik closed 1 year ago

xdanik commented 1 year ago

As the title says - Vsb (power provided from the Nice motor) is not always 24V DC.

I have a Nice Road 400 with RBA4R10 control unit and I have measured 34V between the Vsb and GND pins. This would certainly kill the Wemos D1 power shield as its rated for 24V max. I was lucky to measure it before connecting it 😉.

When you look at the schematics for IBT4N there is a U1 - 78L05 linear voltage regulator powered by the Vsb line that is rated for up to 35V.

It would be great to mention this in the readme.

pruwait commented 1 year ago

Yep. Its Nice joke. 24V is 34V for all devices. My Wemos D1 power shield is working good with 34V. But it was a prototip. Device 2.0 has power unit with XL1509 with wide 4.5V to 40V Input Voltage Range.