TMC receiver

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Belgium, Antwerp-Brussels area,

showing long morning jams on a rainy day, Nov.20, 2007.


Traffic Message Channel receiver, project prototype preview.

Main roads traffic status and incident report and display.

Technical specifications:

  • Dual display: colour road map (left) and detailed text messages (right) both with LED backlight.
  • Up to 120 TMC messages are stored in memory.
  • Auto/manual TMC message scrolling.
  • GPS position locator/follower optional.
  • Map navigation with  mouse sensor and/or micro joystick.
  • Map zoom 10km to 80km (in 10km steps)
  • City and area presets preconfigured.
  • High quality NXP TEF6901AH chip used for best performance.
  • Integrated RDS/RBDS radio data demodulator.
  • All parts will be available at our shop.

  • TMC countries to be supported: Belgium , Netherlands, Germany , France , Sweden  and more to come...
  • This product will be ported to a smaller OLED OmniBoard project (054 - LiveQ) and will be available as a KIT (PCB + parts) from our online shop.


Free schematics and source code available for download. Last update: August 15, 2008.

Prototype snapshots:


  Dual display, mouse touchpad and joystick.

Power in (9V..12V AC/DC)

The tuner TEF6901AH, microcontroller PIC18F8722, USB controller, Memory card and power supply  are located on the backside.


  (from left to right)
  • Audio output and antenna input.
  • Nokia 6610 Colour LCD (128x128) with road map.
  • Mouse sensor (red) for touchpad navigation.
  • Micro joystick for controls and navigation.




  (from left to right)
  • Displaytech LCD with detailed text messages:
  • 1st row:
  • Mode (NAVigation, TUNer,SETtings)
  • Station preset 0..30
  • Station frequency 87.50 .. 108
  • RDS station name (PS)
  • 2nd row:
  • tmc status: receive (*) or decode.
  • current/total tmc messages received.
  • Station signal strength.
  • ta/tp/stereo/tmc indicator
  • RDS time.
  • 3rd row: (highlighted)
  • Road name and number.
  • 4th and 5th row:
  • Road start --> end segment, direction.
  • 6th row: (highlighted)
  • Traffic Event
  • 7th and 8th row:
  • Start --> end locations.

Schematics: (click to view the full resolution image) or right click and save as. (might be too large to view in browser.)


Info & datasheet:

Nokia 6610 colour LCD 128x128 dots: ccs c source code (takes character set from displaytech source below)
Displaytech LCD: ccs c source code
NXP TEF6901AH/v2557 tuner chip

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