Category Archives: Led Lighting

WS2812B Wake-up lamp


This is a new project I’ve been working on: a small “smart lamp” that will create some programmable lighting patterns.
The main usage will be to help me wake up in the morning by beginning a light pattern before the alarm clock. It should be able to simulate some sort of sunrise, etc.
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Rohde & Schwarz SMS Teardown


This is a quick tear-down of a Rhode & Schwarz SMS frequency generator, with the 1040MHz option installed.
I had to replace all the electrolytic capacitors, as they are failing all over the unit. The PSU ones blew up and filled the unit with electrolyte vapors.

The photos are quite poor and the colors are a little off – i have some warm LED lights that look good but mess up photo cameras.
I had to take the photos at F2 -> the DOF is low and there’s a lot of fringing. I’ll try to improve them as much as i can ( sharpen, etc )


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RGB led lighting module update

Posted on by
top layer

This is an update for the led lighting project.
The design in complete and the PCB’s are almost ready.
This is the schematic:

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RGB led lighting module


I’ve started a new project: a RGB led lighting module, that can be controlled from a central communication node.

I’ll be using some SMD rgb leds, in 5050 case, that i ¬†got from e-bay.

The Imax is specified to 40mA, but i’ll be running them at 30mA max, to keep the heat down.

The design features are :

  • 50x50mm per module
  • cheap controller, JTAG interface, enough cpu power for high resolution/ speed PWM
  • the ability to run stand-alone, following a pre-programmed sequence
  • RS485 line drivers
  • wide input voltage range

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