Well Explained!! Is it possible to do a video on the logic box u are using. I did not understand the switches you were pulling high and low please. Thanks
Very simple explanation of the action for a plain mechanical pot. Then in a few seconds we are looking at a 14 pin device which comprises TWO digital pots. Confused? - I was, & still have no idea how to actually use the digital device, nor when it's use might be advantageous, or how to deal with the apparent inherent lack of accuracy. Guess I need to look elsewhere!
You're right. The video didn't present the information in an organized way. It got into details before giving the larger ideas to the viewers. To answer your questions: Instead of physically twisting a knob to change the impedance, your controller communicates over the I2C or SPI link. It's useful when you want to control an impedance within a circuit via software. For instance, if you want to remotely control the volume of an amplifier.You can use a microcontroller like an Arduino, NodeMCU or similar to "talk" to the digital pot via a protocol called I2C or SPI (alternatively).
The clock signal has to be there in order to make sense of the data signal. A music analogy may help: Think of digital communication as a form of music with only 2 notes. The decoded digital signal could be considered sheet music. The value and order of these two notes would make little sense without knowing the "beat". In other words, knowing which note is an 1/8 note, 1/4 note, and in what order and on which beat is the only way you can transcribe the music. The clock signal is the "beat" of this music. It lets us understand the music because a note played over a single beat is a different meaning than a note played over two beats.
good video, but for me i need to see a real world experiment. I have found, myself and probably many others can only learn by touching and doing or seeing. Theory right or wrong will not imprint in my brain. You clicking that switch up and down just leaves an empty whole or path in my brain because i can not see inside that switch and what it is doing , and so its like a light unplugged and will not light in my brain. I have thought about this a lot... Doctors for instance can study books for years and pass test. I would need to have hands on training to remember all that info. So i believe that is why i ended up a blue collar worker... Hands on has instant results right or wrong it can be seen and changed or fixed, not imaginary. Now a doctor gets out of school with very little hands on training, but is thrown into hands on. We as blue collars know that without hands on experience, mistakes will happen thats not good on a living body,,, we for instance build by plans that have thousands of mistakes because the architects never had hands on, and what they draw will not work. If you have ten thousand doctors thrown into the field on the same day,,, one is going to be better than the rest, and one is going to be the worst or deadly. But yet because they must go to school,,, and are not allowed to learn hands on. A person can not become in this world today, in this country, a doctor, even if another person is ten times smarter hands on, doctors just need a memory for words to become a doctor. Have you ever noticed how doctors come in and go out as fast as possible? And who questions doctors we assume they know what they're doing...Anyway sorry, your video just got me thinking about how your brain works...... Good video!
