Keiang's electronics hobby side

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hardware based TV Ambient-Light "SCIMO" - hardware V1.1

hardware V1.1 description


"SCIMO V1.1" hardware
SCIMO V1.1 hardware


assembled PCB "SCIMO V1.1"
assembled PCB SCIMO V1.1 topside   assembled PCB SCIMO V1.1 backside


  • Standalone device: video analysis and control of the LEDs is done in hard realtime by powerfull microcontroller
  • Video input (PAL, NTSC, SECAM): S-Video (Y/C) or Composite (CVBS)
  • USB full speed device (for initial configuration via PC)
  • Included receiver for infrared remote control
  • up to 240 RGB LEDs (zones) can be separately controlled
  • supported digital LED / ICs and protocols: DMX512, WS281x, TM18xx ...
  • Firmwareupdate via USB
  • automatically wakes up or goes into standby depending on video signal (e.g. if TV, PC switched on/off)
  • adjustable LED delay time (to compensate TV input delay)
  • precise adjustable LED colors (red, green, blue, gamma) to match color on TV

technical data:

  • Video analysis: done by very powerfull 32-bit ARM Cortex-M4 microcontroller with DSP (Digital Signal Processor) and FPU (Floating Point Unit)
  • realtime operation system used in microcontroller are optimized for best performance and needed resources
  • Video deocder: TVP5150AM1 from Texas Instruments digitizes analog video signal
  • internal Video Data Format: ITU-R BT.656 ( 8 data bits at 27 MHz pixel clock )
  • analysing each video frame (50/60 Hz) which gives very responsive and dynamic LED colors
  • processing ~22 MByte/sec. of video data
  • very low power consumption from SCIMO itself: only ~1W (powered up)


supported color formats:

  • PAL (B, D, G, H, I, M, N, Nc)
  • NTSC (J, M, 4.43)
  • SECAM (B, D, G, K, K1, L)



  • S-Video or Composite input (video signal)
  • USB 2.0 (for initial configuration)
  • power supply input ( 5V - 12Vdc / max. 11 ampere )
  • LED stripe connector (for digital RGB LED stripes)

hardware feature:

  • automatic low-power standby mode
  • multi video connector (S-Video or Composite or dual Composite)
  • 5 - 12V pass-through power supply for LED stripes
  • power supply of LEDs are switched off if SCIMO is in standby mode -> eliminates idle current of LEDs
  • infrared remote control receiver
  • two dual colour LEDs shows current status (video signal detection, power mode)
  • onboard microswitch
  • ESD protection
  • onboard RGB LED for enclosure lightning


function description

LED states
LED1: power state (on/off)
LED2: video signal available



Dimensions of the board SCIMO V1.1
Dimensions of the board Scimo V1.1

How connect WS2812B LED stripes:
Hardware Installation SCIMO V1.1





Published on: Wednesday, 14. September 2016 (27448 reads)
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