Small project #6 — LED-strip controller

LED-strip_controlled_by_one_of_my_doodads

Specs:

  • ATtiny13
  • AO3400 N-CH MOSFET – good for up to 2A in ventilated areas
  • MCP1804 5V LDO regulator
  • 2 potentiometers for parameter adjustment
  • ISP header (1.27mm, for pogo-pins)
  • Dimensions: 30mm x 10mm
  • Weight: 1.47g (shrink-wrapped)

LED-strip_PWM-03

IMGP7926

So tiny…
Yes_it_is_TINY

Try to apply solder-paste sparingly.
Application_of_'glue'

Too_much_'glue'

Adding a bit of paste-flux to do some clean-up work.
Adding_the_magic_goop

Uploading the firmware.
IMGP7914

Shrink-wrapped final board (worked better than expected, no hair-pulling at all):

IMGP9789

And last but not least, proof that it works:

(go to 02:45 if you’re impatient)

As usual you can have all design files and code. Search for “LED-strip_PWM” and take a look inside the “ATtiny_projects” repo for code (’13’ subfolder): [1],[2].

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2 Responses to Small project #6 — LED-strip controller

  1. Jon Vannatto says:

    I’ve been looking for a board like this for quite some time. I was very excited to learn about it via the EEVBlog Mail Bag YouTube segment it was featured in recently. Thanks making these available and I will be ordering several.

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