Administrator rbAmp — Frequently Asked Questions Quick answers to the most common rbAmp questions — power, accuracy, I²C, addressing, energy, and integration. Power hardware Why is rbAmp 5 V-powered but the I²C bus is 3.3 V? Do I need external I²C p... Arduino energy-monitoring ESP32 esphome home-assistant I2C 30 июл. 2026 г. FAQ
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 июл. 2026 г. Projects and Tutorials
Administrator Why Three Single-Phase Meters Can't Measure Your 3-Phase Power The setup everyone builds You have a three-phase supply and you want it in Home Assistant, so you do the obvious thing: three single-phase meters — a PZEM, a Shelly EM, an ATM90E32 board — one per pha... accuracy energy-monitoring home-assistant power-measurement sampling three-phase 29 июл. 2026 г. Tech Articles
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 июл. 2026 г. Projects and Tutorials
Administrator rbAmp in the Home Assistant Energy Dashboard in 15 Minutes The problem this solves You want one honest number in Home Assistant: how much power this appliance is actually pulling, right now, and how many kilowatt-hours it burns over a month. The usual DIY ans... ct-clamp energy-monitoring ESP32 esphome home-assistant 28 июл. 2026 г. Projects and Tutorials
Administrator How CT Energy Measurement Really Works — From Clamp to Kilowatt-Hours You clip a current transformer around a wire, wire it into an ESP32, and Home Assistant lights up with watts and kilowatt-hours. Then you check it against the meter on the wall — and the numbers don't... accuracy ct-clamp current-transformer energy-monitoring home-assistant power-factor 28 июл. 2026 г. Tech Articles
