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Do I need external I²C pull-up resistors for rbAmp?

30 de julio de 2026 por
Do I need external I²C pull-up resistors for rbAmp?
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For a single module, no — the rbAmp PCB carries built-in 4.7 kΩ pull-ups on SDA/SCL to 3.3 V. For a multi-module bus, keep the pull-ups on one module and disable them (a solder jumper) on the rest, so the parallel combination doesn't drag the bus resistance too low. See the multi-module build.

Documentation & source code
📖 rbAmp documentation overview · 💻 rb-amp/rbamp-docs on GitHub
Why is rbAmp 5 V-powered but the I²C bus is 3.3 V?