R7003SB doesn't work with Telemetry

BrushlessPower / SBUS2-Telemetry

Arduino Library for SBUS and SBUS2 with Futaba Telemetry

GNU General Public License v3.0

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Closed BrushlessPower closed 5 years ago

BrushlessPower commented 5 years ago

R7003SB did not work R7008SB work on the same Sketch and Hardware Setup

SBUS2 Signals are not transmitted properly

BrushlessPower commented 5 years ago

are there others with the same Problem? Or without Problems with the R7003SB?

Maybe my R7003SB is broken or i have wrong Settings.

BrushlessPower commented 5 years ago

R7003SB has an internal Pulldown Resistor with 2k2 Ohm

I had used a 4k7 Resistor in the TX Line, so the Telemetry Output Voltage was to low (~1.0V) With recommended 1k Resistor everything works fine.

R7008SB has a much higher Pulldown Resistor around 18k The the 4k7 and the 1k Resistor are working as expected.