Administrator Log Energy Data on a Raspberry Pi with rbAmp — CSV and SQLite in Python, No Cloud The monitors read it; the relay acts on it — this one keeps it . An rbAmp module and a Raspberry Pi make a standalone logger: timestamped voltage, current, power and kilowatt-hours appended to a CSV f... python 30.07.2026
Administrator Trip a Relay on Over-Current from a Raspberry Pi — Local Load Control in Python The Pi monitor reads the current; this one acts on it . When a circuit stays over your limit, a Raspberry Pi switches a GPIO relay to shed the load — locally, in its own Python loop, no Home Assistant... python 30.07.2026
Administrator Meter Several Circuits from a Raspberry Pi — a Multi-Module rbAmp Bus in Python The single-module monitor read one circuit. A whole home has more — mains plus branches, or three phases. On a Raspberry Pi the answer is the same as on a microcontroller: a bus . Two or three rbAmp m... python 30.07.2026
Administrator Build a Raspberry Pi Energy Monitor with rbAmp — Live Watts in Python, No Cloud If your home server is a Raspberry Pi, you don't need an Arduino or Home Assistant to read your mains — a few lines of Python and an rbAmp module will print 230.4 V · 0.21 A · 48 W · 0.97 PF to the te... python 30.07.2026
Administrator Log Your Energy Data to an SD Card with Arduino — Timestamped CSV, No Cloud The monitors show it, the relay acts on it — this one keeps it . An rbAmp module, an Arduino, and a microSD card make a standalone data logger : timestamped voltage, current, power and kilowatt-hours ... Arduino csv data-logger energy monitor ESP32 I2C sd-card 30.07.2026
Administrator Local Current-Limit with Arduino — Trip a Relay Before the Breaker, No Cloud The monitors show you the current. This one acts on it : when a circuit stays over your limit, the Arduino trips a relay to shed the load (or sounds an alert) — and it does it in its own loop, no Home... Arduino current-monitoring ESP32 load-control load-shedding 30.07.2026
Administrator Meter Several Circuits with One Arduino — a Multi-Module rbAmp Bus The standalone monitor put one module on a screen. Real installations have more than one circuit — mains plus a few branches, or three phases. The naive answer (one meter per circuit, each on its own ... Arduino energy monitor ESP32 I2C multi-channel 30.07.2026
Administrator Build a Standalone Arduino Energy Monitor with rbAmp — Watts on an OLED, No Network Not every energy project needs Home Assistant, a cloud, or even Wi-Fi. Sometimes you just want a little box on the bench that says 230 V · 0.21 A · 48 W · 0.97 PF on a screen, updating every second — ... Arduino energy monitor ESP32 I2C oled 30.07.2026
Administrator Three-Phase Energy Monitoring in Home Assistant: 3× rbAmp UI on One ESP32 If you've read why three single-phase meters can't measure your 3-phase power , you know the trap: three independent meters sample at different instants, so their numbers don't add up. This is the bui... energy-monitoring ESP32 esphome home-assistant I2C three-phase 29.07.2026
Administrator Real-Time Load Control with rbAmp — Current Limits, Alerts & Load Shedding in Home Assistant The problem this solves The main breaker trips when the EV charger, the water heater and the workshop all pull at once. Or you want to cap a circuit — a rental outlet, a garage socket — so it can't ex... current-monitoring ESP32 esphome home-assistant load-control load-shedding peak-shaving 29.07.2026
Administrator Migrating from PZEM-004T to rbAmp — Keep All Your Home Assistant History Why leave a PZEM that works? A PZEM-004T is a fine little meter. It keeps its own kilowatt-hour total in EEPROM, so your energy survives a reboot, and for one circuit it does the job. You outgrow it f... energy-monitoring esphome home-assistant I2C migration pzem-004t 29.07.2026
Administrator The Whole Panel on One ESP32 — Real Per-Circuit Energy in Home Assistant The problem this solves Your utility meter says the house is pulling about 3.9 kW right now. It won't tell you that the water heater is ~2.2 kW of it, the AC compressor another ~1 kW , and the rest is... ct-clamp emporia-alternative ESP32 esphome home-assistant per-circuit whole-house-energy 29.07.2026
