DP Talker - NMEA 0183 Reader

DP Talker turns an Android phone and a USB-serial adapter into a field tool for marine electro-technical officers and dynamic positioning technicians. NOT FOR USE AS A POSITION REFERENCE INPUT ON A VESSEL IN DP OPERATIONS. READ WHAT IS ACTUALLY ON THE WIRE Frame and decode a live NMEA 0183 stream, and see how much of it the app genuinely understood rather than a claim that everything is fine. Decoded value cards for heading, wind, position, VRU motion, depth, log speed and laser or radar range and bearing - each with its measured rate, and each visibly dead when the source goes quiet. Tap any raw line for a full field breakdown: every field named, its raw wire text beside the reading, the checksum verified, and guidance on what it means on a DP - which accuracy figures are real measurements and which are constants the sensor always sends, whether a bearing is relative to the bow or to north, and which roll and pitch belong to the sensor head rather than to the vessel. A sentence the tables do not know still opens, with its fields numbered. A sentence whose checksum failed still opens, marked unverified - because the corrupt line is usually the one you are chasing. SIMULATE A SENSOR Gyro, wind, DGNSS, VRU/MRU including Kongsberg PSXN,23, and the position reference telegram family - Fanbeam/MDL, CyScan, Artemis, ASCII17, and the RadaScan, RADius and SpotTrack formats. Drive them live while transmitting: slew a heading at a realistic rate, dial in a sea state, swing a bearing. The exact frames are previewed, with checksums, before a single byte goes out. Or type your own telegram. A template editor with a live preview renders whatever your interface manual describes, so the sentence this app has never heard of is one you can still send today. RECORD, REPLAY, RE-TRANSMIT Capture a session to a raw .nmea file - the bytes and nothing added, so it opens in any NMEA tool and can be mailed to the sensor OEM as evidence. Replay it to the screen, or re-transmit it out the serial port at its original timing, which turns any recording into a test source. Checksum failures are marked on the scrubber so you can jump straight to the fault. A TELEGRAM REFERENCE THAT WORKS OFFLINE Paste any sentence - from an email, a laptop, or an interface manual - and decode it with no adapter attached. Or browse every telegram the app knows, each with a worked example rendered from its own definition. WHAT IT IS NOT A field and bench tool, written and maintained by one working ETO. It is not calibrated test equipment, not type-approved, not a position reference system, and not endorsed by any manufacturer, operator or class society. What you read is only as good as the adapter and the cable. Treat it as an indication and confirm anything that goes into a report with an instrument that carries a certificate. NOTHING LEAVES YOUR PHONE DP Talker declares no internet permission at all. Not "we promise not to" - the platform will not let it. No telemetry, no analytics, no crash reporting, no account. Recordings and settings stay in the app's private storage until you share a file yourself. REQUIREMENTS Android 8.0 or newer, USB OTG support, and a USB-to-serial adapter. FTDI, Prolific, CP210x, CH340 and CDC-ACM are supported. No adapter to hand? Demo mode runs every screen against a synthesized stream.