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
