He wanted a beautiful piece of iron. It turned out
Part 1 Part 2 You are here
Once a beloved wife of friends at the dacha found a rainbow spring Slinky . I remembered my childhood, went to the stairs and started. Miracle, but the spring from the first time perfectly sprung on each step.
- Happened! - Everyone who was nearby exclaimed with joyful surprise.
The three-year-old daughter also wanted to try. She took the spring, climbed the stairs and started it. The spring flew over the stairs and slammed sideways onto the grass.
- Happened! Cried her daughter joyfully.
In general, a year has passed since the beginning of my fan project. Happened! That very beautiful piece of iron looks like this:
At first glance, it may not be clear. But with the help of this ax and several details, I got such a mess. gitHub . Filled the entire working folder, so as not to look for libraries around the Internet.
And how does it work?
A beautiful piece of hardware is just a connector that, with the help of four bolts, can transmit two signals and power. Two signals are I2C. The motherboard is able to scatter all expansion cards through consecutive I2C addresses and, subsequently, do something with them. For example, read a 12-bit analog signal from (almost) each leg of the expander. Or control the 16-bit PWM on each leg of the expander. Well, or just use these legs as a digital input /output. You can use these expanders if you just do not have enough legs on your favorite microcontroller.
The firmware stm32f030f4p6 installed on the expansion board is here .
The library for working with port extender in the Arduino IDE is here .
If it is interesting to the respected Khabravians, I will tell you more about it. But not today.
It may be interesting
This is my first time i visit here. I found such a substantial number of interesting stuff in your blog especially its examination. Really its inconceivable article. Keep it up.Gulf Coast Western Reviews
I can see that you are an expert at your field! I am launching a website soon, and your information will be very useful for me.. Thanks for all your help and wishing you all the success in your business.GSM Solutions
Thankyou for sharing the data which is beneficial for me and others likewise to see.Gulf Coast Western Reviews
Positive site, where did u come up with the information on this posting?I have read a few of the articles on your website now, and I really like your style. Thanks a million and please keep up the effective work.GSM Solutions
Hello I am so delighted I located your blog, I really located you by mistake, while I was watching on google for something else, Anyways I am here now and could just like to say thank for a tremendous post and a all round entertaining website. Please do keep up the great work.thc vape juice