SENT Decoder — Support

Last updated: 9 May 2026

About SENT Decoder

SENT Decoder is a configuration and monitoring app for the SAE J2716 SENT Decoder hardware device. The app pairs with the hardware via Bluetooth Low Energy (BLE) or USB-C, lets you monitor decoded sensor signals in real time, and configure routing of the four analog outputs.

Getting started

Hardware required: The SENT Decoder app requires the SENT Decoder hardware device. The app alone cannot decode SENT signals.
First connection: Power on the hardware, open the app, tap Scan, and select your device from the list. The app will remember the last connected device.
Demo mode: If you do not have the hardware yet, the app includes a built-in simulator. Tap Start simulation on the Scopes tab to see decoded sample signals.

Common questions

Why is the app asking for Location permission on Android?
Android 6.0 to 11 requires Location permission for any app that uses Bluetooth scanning, even when Location is not used by the app itself. SENT Decoder does not use, store, or transmit your location. On Android 12 and newer, only Bluetooth permissions are requested.

Why does Bluetooth scanning find no devices?

Make sure the SENT Decoder hardware is powered on and the BLE indicator is active
Make sure Bluetooth is enabled on your phone
On Android: confirm Location permission is granted in Settings → Apps → SENT Decoder → Permissions
Try moving closer to the hardware (within 10 metres / 30 feet)

Why does the analog output bar show a different value than expected?
If you have set a non-zero Bias in the Routing tab, the in-app oscilloscope shows the source signal plus the bias (matching what the physical DB15 pin outputs). The dashboard gauges and value bars always show the un-biased source value. The yellow highlighted "+NNN" badge indicates the bias amount.

How do I save and reload my configuration?
Use the Presets tab to save up to 8 named configurations and reload any of them. Configurations include all SENT input settings, AO routing, scaling, and bias values.

What does the colour code mean?

Blue: SENT 1 Channel 1 / AO 1
Red: SENT 1 Channel 2 / AO 2
Green: SENT 2 Channel 1 / AO 3
Yellow: SENT 2 Channel 2 / AO 4
Orange: Slow channel data (SL16 to SL27)

Reporting a bug or requesting a feature

Please email a description of the issue, the app version (visible in the top status bar, e.g. "v3.2.8"), and your device model and OS version. Screenshots help a lot.

Email support: roman@evdiag.net
Response time: typically 1–3 business days

Hardware compatibility

The current app version supports SENT Decoder hardware Revision 7 (with MDBT50Q-P1MV2 BLE module and CP2102N USB-C interface). DB15 pinout follows the documented standard:

Pin	Signal
1	+5 V supply (output)
2–5	Analog outputs AO 1 to AO 4
6	SENT input 1
7	SENT input 2
8–15	GND / reserved

Privacy

SENT Decoder does not collect, store, or transmit any personal data. See the Privacy Policy for full details.