They are simply dust, fingerprint and scratch magnet, everything is summarised in the amazing book from Andrew ‘bunnie’ Huang
“My world is full of small frustrations like this. For example, most customers perceive plastics with a mirror finish to be of a higher quality than those with a satin finish. There is no functional difference between the two plastics’ structural performance, but making something with a mirror finish takes a lot more effort. The injection-molding tools must be pains-takingly and meticulously polished, and at every step in the factory, workers must wear white gloves. Mountains of plastic are scrapped for hairline defects, and extra films of plastic are placed over mirror surfaces to protect them during shipping. For all that effort, for all that waste, what’s the first thing users do? They put their dirty fingerprints all over the mirror finish. Within a minute of a product coming out of the box, all that effort is undone. Or worse yet, the user leaves the protective film on, resulting in a net worse cosmetic effect than a satin finish. Contrast this to satin-finished plastic. Satin finishes don’t require protective films, are easier for workers and users to handle, last longer, and have much better yields. In the user’s hands, they hide small scratches, fingerprints, and bits of dust. Arguably, the satin finish offers a better long-term customer experience than the mirror finish. But that mirror finish sure does look pretty in photographs and showroom displays!”
As a followup of my previous article:
Ubuntu: talking clock every hours
4 years after the previous article, I still need this tool, but I wanted a more “natural” TTS.
So I’m using Voxygen, a natural TTS provider (very good for French), retrieving the generated voice with wget and the following command:
wget --quiet --no-check-certificate -O /tmp/clock_`date +\%-1H`.mp3 "https://www.voxygen.fr/sites/all/modules/voxygen_voices/assets/proxy/index.php?method=redirect&text=il est exactement `date +\%-1H` heures.&voice=Loic"
Here is the script to run every hours:
if [ ! -e /tmp/clock_`date +\%-1H`.mp3 ]; then wget --quiet --no-check-certificate -O /tmp/clock_`date +\%-1H`.mp3 "https://www.voxygen.fr/sites/all/modules/voxygen_voices/assets/proxy/index.php?method=redirect&text=il est exactement `date +\%-1H` heures.&voice=Loic"; fi ; mpg321 /tmp/clock_`date +\%-1H`.mp3 --gain 200
We will be using gnome schedule taks:
Here is a very simple fume extractor fan, to put an halt to apnea soldering.
- DC/DC buck boost converter (3€ on ebay)
- USB battery pack 5€
- scrapped fan
- scrapped switch
- scrapped potentiometer
- Hammond prototype case (1€, same as my USB motion sensor)
- nice labels
- double side tape
Enough talk, a picture:
And in action, can suck up to 15cm at medium speed:
This “hack” took me 30min, and costs close to nothing, while some have been down to build a DC/DC converter for this!
Thing to add in the future:
- active carbon filter for better filtering, but usable as is for small jobs: you don’t get fumes in your face anymore.
- USB light for soldering in the dark
My favourite use: in the freezer/fridge, when you forgot to chill beers for an unexpeted party, it takes only 10min to have freezing beer instead of 1h. (remove the carbon filter first…)