The Parametric Covid Mask Design I’ve been printing masks as fast as my little Flashforge Adventurer 3D has been able. Which is not all *that* fast due to each mask taking around 7 hours to print and assemble. The mask I had been making is a wonderful design that appears to have been built in… Continue reading 3D Printer Covid Mask Design
Quick Covid Mask – MERV 13 We’ve all heard about the shortage of masks for our health care workers. Do your part, leave the N95s on the shelves for our nurses. To help, here are a couple of design alternatives you can make at home for personal use. First, there are two designs you… Continue reading Quick Covid Mask – MERV 13 Filters
There is a new and fantastic cluster of ESP32 boards that have hit the market. This is just one of them. They are WifiCameras that just work. I’ve been tinkering with cameras for a long time – using them for dog detection, facial recognition, even Nerf Battle Turrets. Before now many of those projects were… Continue reading ESP32 Cameras! Incredible power for teaching.
A little background… Raspberry PIs are awesome as little web servers. They are a limited in how much compute they have available. So, if you are like me, you’ll have piles of these little guys sprinkled around your house. The trouble is its a pain to get to all the things they can do for… Continue reading NginX on a Raspberry PI
Picovoice.ai There is a great video for getting started: I’ve distilled the commands out for you… First pull out the repository – this took a long time for me… its BIG (4.2G at the time of this writing): git clone https://github.com/Picovoice/Porcupine.git Now that you have the repo. There are a good number of hotword models… Continue reading Hot-wording on a Raspberry PI – “Computer! Do my bidding!”
What is it!? It’s a small smoke generator controlled by Alexa – that allows you to evoke the chalice of fire one might imagine being part of Harry Potter’s world. The smoke is illuminated by high-ish powered lasers, and the whole thing is controlled with an ESP8266 and an Alexa Skill. How does it work?… Continue reading Wizard’s Fire!!!
If you haven’t yet figured it out. I’m a big fan of techtutorialsx – the stuff he likes is very clearly many of my own interests, and I often find myself on his site when I need to figure things out. This is yet another example: I ran across his site when needing to explain to… Continue reading ESP32 Arduino: HTTPS GET Request
Super cool article on getting web-sockets functioning on an ESP32: https://wp.me/p6Er9u-6nx Web-sockets allow for 2-way communication without the need for reloading a webpage. Now, with this trick you can communicate with your esp32, sending commands and more without fully loading a file.
There are a bazillion hidden gems in Linux Terminals. When getting started its easy to forget how much has been done to make your life easy and simply stick with what you know. I went for years without knowing Ctrl-R – and now, I can’t live without it. Here are some top level ones to… Continue reading Terminal keystroke conveniences…
Sometimes you need your little linux box to be available for login even while it lives on foreign networks. Why…? Say you are helping a remote friend play with a pi. Or you just want to share a TMUX between your kids and their friends. Another use-case – as a professional, deploying a bit of… Continue reading Raspberry PI – SSH Tunneling Into Hostile Territory – plus tunnel on boot