DIY, Maker, Hacker, Science Experiments
This is what happened to me on my nine-year-old PC. The computer starts up but nothing is seen on the screen. I explain how to make the diagnosis of the error to find out what is failing, since it seems to be a common error.
The fault usually comes from one of these 3 sites:
In this article I will explain how to solve a common error in Arduino:
avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied
After a long time without using Arduino I have taken my two boards (original one and the Elegoo) to do some activities with my daughter. I connect them, I’m going to put the blink to see that everything is fine and when I’m going to send it to the board it returns me the well-known error.
If you are a father, you will use wet baby wipes and it is one of those things that from the tests you know that you will continue to use them forever.
I bring a tutorial on how to make wet wipes, which we can use either with our baby or for domestic use. A great and really homemade DIY.
The wipes we have obtained are very cheap, although it will be difficult to replace the commercial ones with these. Yes, it is true that if you have run out and the stores are closed or you have gone on a trip or your baby has some type of intolerance to chemicals that carry the commercial wipes, then this tutorial may come in handy.
I found my old cassette tapes, many with music and many others with stories and children’s songs. I wanted to put a few tapes my daughters to see if you like. I am very sorry to throw them away.
But many are broken, they have the tape broken. So I will explain how they were arranged, as a tribute, because I do not think there are many people interested in fixing them. But if they ever fall into your hands and you want to be able to hear it, the post may be useful.
Look. The magnetic tape is missing, because when trying to reproduce it has broken and stayed inside, or was already broken and I have not noticed when I put it.
A few days ago I bought an Arduino Starter Kit clone, from the Elegoo brand, an offer of $30. I have enough sensors and components that I have been buying, but I lacked many of those offered in the Kit and I thought it was a good idea to buy it and see if this type of products is worth it. They have 4 starter kits, the basic one, it’s the Super Starter that is the one I bought and then they have two more with more components. But the truth is that I took this one for the offer. I have been wanting to take the one that brings radiofrequency.
Reading some review of the Elegoo boards I see that they speak well of them, although there are people who complain about the compatibility of the board, which is an Arduino UNO R3 clone. My experience has been very positive the board has worked perfectly, compatible with the Arduino IDE without doing anything, just connect and go. I have loaded the blink, I have made some modification. I’ve tried some components quickly and everything works fine (Tested with Ubuntu 16.10, 18.04 and kubuntu 17.04)
If this is the first time you hear this name, you are in luck because today you will be surprised. The PCL is a thermoplastic plastic that we can mold with our hands when heated around 60 ° C and that hardens in the cold and we can repeat the process again and again, hundreds of times.
When it cools it becomes hard and tough, it does not conduct electricity or heat, it is not toxic and it is biodegradable. It seems the perfect solution for our inventions does not?
It reminds me of Sugru, but being able to reuse it and it seems to be more difficult to manipulate. Although of course being able to reuse it again and again is a very important point.
Look how the magic happens …
Oscar Perone, sent us this tutorial about how to built homemade beehives some years ago, to publish it in the spanish web. I reproduce it literally. Enjoy it!
It is possible to do beekeeping without knowing anything about it, manufacturing our own material with waste wood and populating our cheap hives with swarms that we will capture for free. The result will be an automatic beehive that will only open to harvest.