ESPc Logger

Record the ride.
See your speed.

GPS logging for ESP32 and ESP32-S3. See your speed on an e-paper display, then download your logs over WiFi.

Get firmware Start with the guide ↗

For compatible DIY hardware. Firmware and source code are freely available.

Two finished ESPc Logger builds in clear enclosures, showing their session displays
Two real builds. One logging firmware.
Two ESPc Loggers with arm straps on an orange bag outdoors
Session results, out in the daylight.

On the water.
At a glance.

Read it in daylight.

E-paper keeps speed and session results visible without a backlight.

Keep the detail.

Compatible u-blox M9/M10 receivers support logging at up to 20 Hz. Choose your log formats in the device settings.

Connect after the session.

Download logs, change settings and update firmware over WiFi with GPS Analyzer’s mobile app or the logger’s browser interface.

From device
to results.

01. Record.

Use GPS mode for the session. Check the GPS receiver and recording rate on the Init screen.

Recording basics ↗

02. Download.

Switch to WiFi and connect GPS Analyzer’s mobile app to the logger to download your logs. You can also use Files in the browser.

Connect over WiFi ↗

03. Explore.

Open your logs in GPS Analyzer to explore tracks, review speed metrics and compare recordings.

Meet GPS Analyzer ↗

Your logger.
One companion app.

GPS Analyzer is the main companion app for your logger. Download logs, change settings and manage firmware updates over WiFi, then explore your sessions in the same app.

Get GPS Analyzer ↗ Firmware downloads ↗ All releases ↗

Firmware downloads

Choose a release, then select the image for your hardware.

Choose a build for your hardware. See the app and browser update steps.

Documentation

Read the guide ↗ English manual (PDF) ↗ Eestikeelne juhend (PDF) ↗