About two years ago, I started running into a problem with our print farm: the filament sensors on the printers began to fail. It was a very specific failure: the filament sensors started producing erroneous out-of-filament reports. That means that the printer would pause and beep, requesting new filament since it had run out. But… Continue reading False positives on the filament sensor on your Prusa Mk3? Here’s how to fix it.
Category: Engineering
Headphones and Headbands
We’ve been hard at work on the upcoming Ploopy Headphones, and we’re starting to see some results that are blog-worthy. Today’s episode is about headbands! Headbands, it turns out, are surprisingly tricky because they do a lot of different things. They need to be comfortable, but also stiff enough to create clamping force on the… Continue reading Headphones and Headbands
Planar Magnetic Drivers: I can’t lower the critical frequency any more, Cap’n!
I’ve been working on headphones for a few months, with blocks of time concentrated around the receipt of new prototypes and flights of inspiration. I recently received my second set of prototypes. These are constructed by a manufacturer of flexible circuits, using copper for the traces and polyimide for the membrane. The total assembly thickness… Continue reading Planar Magnetic Drivers: I can’t lower the critical frequency any more, Cap’n!