Matt Mets @cibomahto@v.st

Happy #caturday blep

We designed a stencil placement jig for large, high-density solderpaste application. The boards are half a meter long, with 0402 and QFN parts along them. Got through the whole prototype run with zero defects!

Improvised test jig

First pulls using our new stencil tool, I'm quite happy!

We value your package, but we might break it if you don't pay us extra for insurance.

I must not sit. Cat is the poductivity-killer

Here's Billy!

Protip: adding a crowbar to your design can help protect it against power issues.

Saw some neat stuff at Prolight+sound Frankfurt this week. It's always funny to watch club light show demos while drinking coffee and talking business.

It crashed and lost my unsaved changes, but now I can

Hmm

Hide your terrible hole cutting skills with your digital fabrication skills

The goal here was to determine what kind of filtering the board needed- it looks like a few hundred uF of bulk capacitors does a good job for the 0-3MHz PWM noise, and series resistors on the communication cable reduces the higher frequency bits by 5-15dB.

Looking at the RF currents on the power line from a digital LED panel. The noise from the PWM switching is all sub-5MHz, and noise from the communication bus / internal state updates runs from 1MHz to 100MHz. The measurement numbers were not corrected and are only useful for relative comparisons.

Prototype lot of custom LEDs doing a burn-in test

Disappointed #caturday