I use ESPHome for a number of projects including LED task lighting, and my devices often use an inexpensive TTP223 capacitive touch sensor as a button. I like to be able to tap the sensor multiple times to cycle through…
I’m using ESPHome with Home Assistant for a bunch of home automation projects. I want to be able to flash some of the lights in a Morse code “SOS” pattern as an annoying alert that something has gone terribly wrong.…
OpenSCAD apparently doesn’t have an easy way to make an arc or wedge, or any way to do a partial rotate_extrude. This presented a problem when I started to design my Parametric Encoder Wheel, because in order for it to…
Many of the useful tools and utilities you’ll find on this site are released as what I like to call CollegeFundware, which is basically shareware with a bit of a twist. You may use the software for a reasonable period…
Amazon’s affiliate program can be big business, and many web sites rely solely on Amazon affiliate program referral frees for their income. It’s a good business model for Amazon.com because it helps drive traffic and sales to their site, and…
This makes a great gift, t-shirt, mug, etc. for any computer or math geek, friend, child or baby! Write you name or message in up to 100,000 of the infinitely non-repeating digits of pi. Originally published: Mar 21, 2006. Introduction…
This is how I chose to solve the problem of making trig calculations with the PICmicro MCU. Note that this does not use the CORDIC method because I imagine that would hog too much valuable computing time. This solution probably…