2020-01-20 (M) ProjectHoneybee

The pin assignment list draft I made yesterday was a good start, but a couple of pins were assigned to more than one purpose and not all of the assignments made sense. Today, I tightened up the list and put it into a spreadsheet along with my own notes. I gathered most of my information from a Random Nerd Tutorials page.

I tested one of the analog pins, A6 aka GPIO 34, to see if the max value was 3.3 volts or 5V, and found it to be a 3.3V pin with a max of 4095 which tells me it has 12 bits of resolution compared to typical Arduino controllers which only have 8 bits. This level of precision may be overkill, but I am glad to know. I decided to add a piezo element to the project and connect it to a DAC pin which may not get used, but it is easy to place it on a layout and remove it later. I will also add a place to add a potentiometer which can be useful during programming by using live values instead of changing a variable in code and recompiling.

The user input will be a 4-way joystick and a pair of buttons, which I already mentioned. I moved all of the inputs to capacitive-touch inputs so they can forego the physical buttons altogether. I want to use a couple of different size switches for the inputs with 6mm x 6mm switches for the directional control and 12mm x 12mm buttons for the A and B buttons.

I looked at the SAO information to map which pins would go there and so the controller could fully support all add-ons including the data lines. The new standard also includes a couple of GPIO, which I allotted in the assignment, and one of them is a touch-sensitive input.

The rest of the posts for this project 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

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