Complete Engine Monitoring for Boats
Complete System Build a complete engine-monitoring dashboard with 8 gauges: 4× Temperature (DS18B20) + 1× Tachometer (RPM) + 1× Oil Pressure + 1× Fuel Tank Level + 1× Engine Hours. All sensors feed a single ESP32 running ESPHome, visualised in Home Assistant. 4× Temp gauges 1× Tachometer 1× Oil pressure 1× Tank level 1× Engine […]
Digital Engine Tachometer with ESP32 and Optocoupler
🔗 Full Guide · Transcript Build a simple, accurate digital tachometer for your engine using an ESP32 “remote hub,” a ~$2 optocoupler, and ESPHome/Home Assistant. This guide covers wiring (alternator tacho → optocoupler → ESP32), ESPHome setup with a pulse counter, RPM calibration from real data points, optional engine-hours and engine-active entities, and a dashboard […]
Oil Pressure monitor with ESP32, INA219
🔗 Full Guide · Transcript Build a digital oil-pressure monitor using an ESP32 “remote hub,” an INA219 board over I²C, and Home Assistant/ESPHome. This guide follows every technically relevant step from the video: soldering the INA219, wiring to the ESP32, tapping the existing oil sender’s “Gauge” terminal, adding INA219 in ESPHome, calibrating volts→bar from two […]
NMEA 2000 to Home Assistant: ESP32 & USB-CAN
🔗 Full Guide · Transcript Turn your boat’s NMEA 2000 (CAN bus) into live dashboards, alerts and automations in Home Assistant. This guide covers two integrations you can add via HACS: 🚦 Smart2000 ESP — Wireless bridge using an ESP32 + CAN transceiver (place it near the N2K backbone, stream to your Raspberry Pi over […]
NMEA 0183 to Home Assistant: Wi-Fi, Signal K & Serial
🔗 Full Guide · Transcript Build a central boat computer with Signal K (TCP) or USB (Serial) — no YAML. I’ve built two integrations to streamline NMEA 0183 → Home Assistant. They aim for a near plug-and-play experience: no YAML, menu-driven setup, and full sensor autodiscovery via HACS. 📶 Smart0183 TCP (wireless) — TCP/Wi-Fi connectivity (works with Signal K and […]
INA219: Precision Voltage & Current Monitoring for Boats
In the world of smart boating, accurate monitoring of electrical parameters is crucial for ensuring the reliability and efficiency of your vessel’s systems. One key component that can help achieve this is the INA219 board, a high-side current sensor that can measure both the bus voltage and the current flowing through a load. This article will guide you through connecting the INA219 to an ESP32, configuring it using ESPHome, and understanding its advantages over traditional voltage dividers.