2021-01-15 (F) Weekly Summary

I used an Arduino card reader for the first time. Up until now, I never needed much memory, and I still don't, but this will make it easier to update files as I make revisions. My big problem was that I couldn't reach the reader buried under the screen, so I ordered an extension that will arrive soon. I added a few files to the card with my computer, and with an Arduino demo program, I read the files.
SD card on the screen

Serial data is always ones and zeros, but there is a difference between 0 and "0." The ASCII representation of zero is 48, and I wanted zero, but I read a much higher number. My program imported  SD card information as a series of characters, so I will have to write some functions to turn these characters into usable numbers.
Garbled data

I took an entire day to write a function that would record four spreadsheet rows into the moods array. I haven't worked with so much incoming data before, and I had to coordinate obsessively between the spreadsheet and array. Fortunately, my SD extension arrived so that I could remove the card without trouble.
Spreadsheet and serial data

I gutted the code from EWC_Presenter to remove anything that wouldn't be useful here. The old stuff had a lot of prandom generation for implementing a soundscape on the fly, whereas this code will rely on user input and a spreadsheet to determine the soundscape. I also updated the sequence for reading the discrete inputs.
Digital input readings and deletion scope


I tried a new technique for monitoring buttons that recorded all the input states into an array and looked for any changes. A change would be a button press or release, which I put into a couple of other arrays. In the past, I referenced my inputs by their pin number, but this way should be more intuitive.

I used the color values from the spreadsheet to change each quadrant depending on the current selection. I can have a somber mood written in the spreadsheet and give it a gray color, and I can also have an energetic set and make it bright orange.
Four unique colors

I started reading my analog inputs and made a white blip on the screen two pixels wide. The potentiometers used logarithmic scaling, so the movement didn't track between the screen and physical. I tried to replicate linear behavior, but I couldn't devise a workable formula.
Screen displaying potentiometer

The rest of the summary posts have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7

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