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Last couple of weeks I have been playing with this great board called “Arm Pro Mini” (name that came after the Arduino Pro Mini). This board is a small barebone open source ARM M0 Microcontroller that was designed to help makers take the bold move from the Arduino “world” to the next step into the feared ARM architecture.
Continue reading “Say hello to my little friend – Arm Pro Mini”
This is an old project that I found on my computer and decided to share with you guys. It’s that famous line following robot, made the simplest way possible, using only basic components such as LM358 OpAmp, LDR, Resistors and Transistors.
The LM358 comes with two Operational Amplifiers and I used it as comparator to make the robot stay on the right path.
During the past few days I have been playing with ProtoStack’s Atmega32A Dev Board and have been very happy with it. Along with the Atmega(8/16/328) dev kit, so far it’s one of my favorite boards.
It comes with everything you need in order to have it going , the big IC-ATMEGA32A-PU µC, 10-pin connector (you can also use a 6-pin ICSP header), capacitors, resistors, voltage regulator for an external power supply and more… You can check the complete list and manual here.
If you are looking for an Atmega32A Dev Board, I would recommend this one for sure!
The AD5204 is a Digital Potentiometer with four internal 10kΩ, 50kΩ or 100kΩ potentiometers. It’s a 8 bits chip which means it has 2^8 = 256 steps from 0Ω to 100kΩ. It can be easily controlled by any microcontroller as it uses a Serial Peripheral Interface Bus (SPI).
I was working on a project where I needed to use some of those AD5204, so I developed a tiny breakout board in order to be able to prototype it using a SMD chip on the breadboard.
Now I’m sharing the Eagle Cad files, so whenever you need to use this chip, you can make some breakout boards with OSH PARK and use it with your projects.
Below you can find an Arduino code example along with useful links.
Hope this can be useful for you!
Any question just let me know!
Continue reading “AD5204 Digital Potentiometer Breakout Board”
When you install a Raspbian Operation System on your Raspberry Pi (I’m currently using Minibian) you can notice that it created a file system with very little space, which can be annoying if you are using a bigger SD card.
I only noticed it when I started to apt-get all those packages that I needed, when suddenly got the message:
cannot copy extracted data for './usr/sbin/php5-fpm' to '/usr/sbin/php5-fpm.dpkg-new': failed to write (No space left on device)
Looking into the SD card’s memory I get:
It’s full!!
Continue reading “Raspberry Pi Using Whole SD Card Memory”
Industrial designer, Joey Ruiter brings his modern day carriage to life by ignoring the parameters of what a car is supposed to be and asking what a car wants for itself. It’s a story about steel and horsepower, but really it’s a story about what happens when we aren’t afraid to be curious.
“For some people is enough to just think about it, or talk about it, or watch on tv or read a book about it… My advice is to get your hands dirty, and wonder and not be afraid to ask questions like ‘Why is that this way?’. People say there are no dumb questions, and thats true, but I think we get criticized for wondering too often. In everything we do there are parameters, to ignore those is the key.”