Administrator Does rbAmp work with the Home Assistant Energy Dashboard? Yes — via ESPHome the module's energy sensor lands in the Energy Dashboard out of the box. See the 15-minute Home Assistant setup .... energy faq home-assistant 30/07/2026 FAQ
Administrator Does rbAmp need the cloud or a subscription? No. It's fully local and open — a documented I²C protocol with open ESPHome, Arduino, Python, and ESP-IDF libraries. Nothing phones home; you own your data.... faq integration 30/07/2026 FAQ
Administrator How does rbAmp handle energy (Wh), and does it survive a reboot? Energy is integrated over exact wall-clock intervals: the module latches a measurement window atomically and the host integrates true active power over the elapsed time, so there's no on-device counte... energy faq home-assistant 30/07/2026 FAQ
Administrator How do I change an rbAmp module's I²C address? On current firmware it's a plain, production-ready operation — no special mode, jumper, or factory tooling . You stage the new address, arm the change, and commit it (a two-phase, magic-armed sequence... faq I2C multi-channel 30/07/2026 FAQ
Administrator Can I put several rbAmp modules on one I²C bus? Yes — that's a core feature. Modules share one I²C bus and differ only by address. Add circuits by adding modules on the same two wires, behind one host — no extra microcontroller, no serial-port jugg... faq I2C multi-channel 30/07/2026 FAQ
Administrator What I²C bus speed should I use, and why 50 kHz on ESP32? It depends on the host driver , not the board brand: Host / driver Bus speed ESP-IDF i2c_master — ESPHome, MicroPython-ESP32, Arduino-ESP32 50 kHz STM32 HAL · RP2040 · non-ESP32 Arduino (AVR/STM32duin... ESP32 faq I2C 30/07/2026 FAQ
Administrator Which boards and frameworks can I use with rbAmp? Anything that speaks I²C: ESPHome / Home Assistant , Arduino / C++ (ESP32, Uno, Nano, STM32, RP2040…), Python on a Raspberry Pi or other Linux SBC, and ESP-IDF . All four client libraries are open and... Arduino esphome faq integration python 30/07/2026 FAQ
Administrator Does rbAmp measure real power or just current? Real (active) power, in watts, computed on the module per channel — plus voltage, current, power factor, and frequency. Because it has both the voltage and the current for each channel, reactive and l... accuracy faq power-measurement 30/07/2026 FAQ
Administrator How accurate is rbAmp? It depends on the current sensor, so here's the honest ladder. With the factory-paired rbAmp CT — module and clamp calibrated together at the factory — it's ±0.5 % of reading per channel , guaranteed ... accuracy faq 30/07/2026 FAQ
Administrator Is the rbAmp module isolated from mains? Yes — there's a galvanic isolation barrier inside between the mains side (voltage sense, CT input) and the low-voltage side (I²C). The module's GND is the host's ground, not mains neutral, so wiring t... faq hardware safety 30/07/2026 FAQ
Administrator Do I need external I²C pull-up resistors for rbAmp? 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, ... faq hardware I2C 30/07/2026 FAQ
Administrator Why is rbAmp 5 V-powered but the I²C bus is 3.3 V? The module has its own microcontroller doing the measurement, and it needs clean, stable power to keep the ADC readings accurate. So the module takes 5 V on VCC and runs it through an on-board low-noi... faq hardware I2C power 30/07/2026 FAQ
