ESP32 + SignalK: Bringing Old Analogue Gauges Back to Life

Sat, 27 Dec 2025 00:00:58 +0000

In this video, I show how to drive older analogue marine gauges using an ESP32, pulling live data from a SignalK server using the SignalK Listener. This is a great way to reuse classic or legacy gauges while upgrading your boat’s electronics to a modern, open-source system.
#SignalK #ESP32 #MarineElectronics

We cover:
✅ Why an ESP32 is ideal for marine electronics projects
✅ How to use SignalK Listener to read live data
✅ Mapping SignalK data to analogue gauge outputs
✅ Driving older gauges with modern digital inputs
✅ Practical tips for reliability on a sailboat
✅ Trigger outputs from your SignalK Data

If you’re upgrading your boat electronics, experimenting with SignalK, or looking for DIY ways to integrate old instruments with new systems, this project is a powerful and affordable solution.

This setup is perfect for sailors who want modern data with classic displays, without replacing everything with expensive proprietary instruments.

⚓ Ideal for:
• SignalK users
• ESP32 & Arduino-style developers
• DIY marine electronics projects
• Sailboat refits and upgrades

Timestamp
00:00 Intro

#SailboatElectronics #BoatTech #DIYElectronics #AnalogGauges #MarineInstruments #OpenSourceMarine #SailboatDIY #BoatLife #EmbeddedSystems #ESP32Project

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