Zeo Decoder Viewer Tips: Faster Decoding and Common Fixes

How to Decode Zeo Files with Zeo Decoder Viewer — Step‑by‑Step

This guide shows how to open and read Zeo sleep data (ZEOSLEEP.DAT / exported CSV / mobile SQLite) using Zeo Decoder Viewer and related tools so you can view hypnograms, sleep-stage totals, and timestamps offline.

What you’ll need

• Zeo data file(s): ZEOSLEEP.DAT (from bedside unit SD card), exported zeodata.csv, or Zeo Mobile SQLite export (ZeodataStore.sqlite or exported CSV).
• Java Runtime Environment (JRE) 8+ installed (Zeo Decoder Viewer is Java-based).
• Zeo Decoder Viewer JAR (e.g., ZeoDecoderViewer0.3aRelease.jar) or the Zeo Viewer app build for your OS.
• Optional: a CSV/SQLite viewer (Excel, LibreOffice Calc, DB Browser for SQLite) for troubleshooting or conversions.

1) Install Java

1. Download and install a current JRE (or JDK) for your OS from AdoptOpenJDK/Eclipse Temurin or Oracle.
2. Verify installation: open a terminal/Command Prompt and run:

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java -version 

Expect Java 8+ output.

2) Obtain Zeo Decoder Viewer

1. Download Zeo Decoder Viewer (Java JAR) from a trusted archive (Softpedia or project release page / community mirror).
2. Place the JAR in a folder where you’ll run it. If you have a platform-specific Zeo Viewer binary, use that instead.

3) Prepare your Zeo files

• Bedside unit (ZEOSLEEP.DAT): remove SD card and copy ZEOSLEEP.DAT to your PC.
• Zeo website CSV export: download zeodata.csv from your account (or use community “FreeMyZeo” / archived exports if site offline).
• Mobile app: get ZeoDataStore.sqlite by sending Diagnostics Email to yourself (Help → Diagnostics → Send Diagnostic Information) and extract the SQLite or export CSV from it.

If you have SQLite and the Viewer doesn’t accept it, export records to CSV or use a community viewer (see step 6).

4) Start Zeo Decoder Viewer and open files

1. Run the JAR:

• Double-click the JAR (OS with GUI) or run in terminal:

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java -jar ZeoDecoderViewer0.3aRelease.jar 

2. In the app use the Browse / Import button to select ZEOSLEEP.DAT or zeodata.csv.
3. Click Refresh / Load. The app lists detected nights (date/time).

5) Read and interpret the output

• Main display shows nights with:
  • Bedtime / Rise time
  • Total sleep, REM, Light, Deep, Wake
  • Hypnogram / sleepgraph view (stage timeline)
• Progress bars or numeric fields report percent/time in each stage.
• If times look wrong (mobile data timestamp offsets), compare with known calendar dates and adjust using external tools (CSV editing) before reimport.

6) If the Viewer can’t read your file

• ZEOSLEEP.DAT unreadable:
  • Confirm file is the device’s DAT (not corrupted). Try a different DAT from the SD card.
  • Use community decoder libraries (zeoLibrary / ZeoReader on GitHub) to parse raw DAT into CSV.
• Mobile SQLite:
  • Open the SQLite with DB Browser for SQLite and export the sleep records table as CSV. Then import CSV into Zeo Decoder Viewer.
• CSV import issues:
  • Ensure CSV matches expected Zeo export columns (timestamp, hypnogram, summary fields). If not, open in Excel and reformat headers to match the Viewer’s expected names.

Helpful community repos/tools:

• zeoLibrary / ZeoReader (GitHub) — parsing libraries and examples.
• Community-built Zeo viewers (search GitHub or Quantified Self forum threads) for mobile-specific imports.

7) Exporting or saving decoded data

• If the Zeo Decoder Viewer offers export, use Export/Save to write CSV of nights.
• Otherwise export from the parsing library (zeoLibrary) or copy values/screenshots for records.

8) Common troubleshooting

• Viewer shows “no new data”: the file may use a different mobile timestamp base. Export CSV and inspect epoch/time fields.
• App crashes on launch: ensure Java version matches requirements; try launching from terminal to read error output.
• Missing hypnogram strings: mobile exports sometimes store hypnogram as blob/text—export via SQLite to preserve leading zeros.

9) Quick reference commands

• Run viewer:

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java -jar ZeoDecoderViewer0.3aRelease.jar 

• Convert SQLite → CSV (using DB Browser for SQLite GUI) — open DB → Export → Table(s) as CSV.

10) Next steps / further analysis

• Use the parsed CSV with sleep-analysis tools or Python/R (pandas) to produce charts, nightly averages, or longitudinal trends.
• For raw waveform or live serial data from a bedside unit, look into Zeo Raw Data Library and firmware 2.6.3R/O community resources.

If you want, I can:

• Convert a sample Zeo file you provide into CSV-format steps, or
• Produce a short script (Python) that parses a typical Zeo CSV into a simple hypnogram chart.