Posts tagged “Electronics

DIY Riveted Vias

I have developed a method for easily and cheaply creating riveted Vias for circuit boards.

  • A Via is a connection that goes from one side of a PCB to the other.  There are times that you want to electrically or thermally connect the two sides of a board, and a regular commercial or soldered Via will not work – for instance a via in a home-made board may be under a chip and must be flush, or one is in a SMT pad and you don’t want the solder to wick down a via hole, or the via may need better thermal or current carrying capabilities.  Here is the full article, now updated with more photos.

Update: I am building a test board with 100 vias in series, and a Themal Cycling Test Rig to determine if thermal cycling will cause failures in these kind of copper via rivets in FR4.  See above.

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Perfect single or double sided PCBs with the Toner Transfer Method

I discuss my method of creating perfect single or double sided PCBs using the Toner Transfer Method.

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My prototype A3987 stepper motor controller (50v 1.5A) with riveted thermal vias, with added 1/2 current semi-sleep mode, and 8 status LEDs (my first SMT board so the soldering is not perfect).