Here is a good pocket reference book about analog electronics.
Not much to write, just check for yourself.
Download via the link:
This week I had to interface two accelerometers (adafruit MMA8451 breakout boards) into one Arduino board.
On Adafruits website, they write that you can address the sensors with 0x1C by adding a pull-down resistor on the “A” pin, or 0x1D by connecting the
“3Vo” to a 3V3 source. What they don’t tell is how to use them both at the same time, which gets clear once you take a look at the Adafruit_MMA8451 class within the library file Adafruit_MMA8451.h.
bool begin(uint8_t addr = MMA8451_DEFAULT_ADDRESS);
Here you have a simple code based on the library example, but adding the two sensors:
You think about securing your laptop, but what about your desk phone, monitor, or printer?
Ever wondered where is a good place to find new and interesting chips on the market? Questions about electronics and what is happening in the market?
For the engineers and makers out there, the world of electronics can be a bit overwhelmed with so much happening all the time, updates, news and buyouts (specially in the past few months).
I would to use this post to share some of my favorite places to get new chip information, updates and random electronics questions.
Do you remember IRC? Yes, it’s still alive and strong. Just connect to the Freenode network and you will find many very interesting channels where you can talk electronics, exchange information and ask questions! If you are there, drop a line to spillere (me!).
This list is still a working in progress. If you have any suggestions please add a comment bellow!
Checking the documentation from popup ninja plugin on how to open the popup from a link, the only available option is how to open from a blog post. But if you want to add the link in your website using php, you need to use the wordpress function do_shortcode. The documentation doesn’t show how to add a do_shortcode with content between the tags.
To open the popup with php, simply get the popup ID and use the code bellow. Just remember to change the text for your desired one.
< ?php echo do_shortcode( '[ninja-popup ID=1234]'.'text to open popup'.'[/ninja-popup]' ); ?>
If you wanna check if php-curl extension is installed in your system, type on terminal
sudo php -m | grep "curl"
If the response from the code above is empty, the extension is not being loaded with php. Then you can install it with:
yum install php-curl
sudo apt-get install php5-curl