I struggled with the screen's wiring because the manufacturer printed the wrong pin labels. I had trouble compiling example code until I wiped the libraries manually and reinstalled them. Even after the code was compiled, I could only manage to turn on the screen's backlight.
Some accurate pins
I tried every trick I knew to make the screen work and even retested the SD adapter in case I broke a wire. I grabbed some spare hardware to establish a reliable example and got a different screen working with another controller. Now I can switch one wire at a time and fix single problems.
Different screen working on a different Arduino
I used what I learned from the spare screen to get the installed screen working. It was more challenging than changing pin names, I had to manually activate pins before sending commands, and I checked which pins needed to use the serial port and which could use general-purpose IO. I also checked the MIDI port on the front and fixed two crossed wires.
Operational EWC_Box screen
I made enough changes to the schematic to redraw them, so I drafted them on the computer. I enjoyed drawing them by hand the first time, but if I make more wiring changes, I can easily update the drawing.
CAD arrangement
I ran magenta wires between the components and wrote all the necessary pin labels. The drawing was similar to the sketch I made on paper.
Schematic for EWC_Box
I confirmed the wiring for my physical operators by writing code to implement them. For the encoder pushbuttons, I made them increment the encoder count by five instead of one. I printed the potentiometer values whenever one changed, and the graph showed smooth operation.
Graphing four potentiometers
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
Completed projects from year 8
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
I tried every trick I knew to make the screen work and even retested the SD adapter in case I broke a wire. I grabbed some spare hardware to establish a reliable example and got a different screen working with another controller. Now I can switch one wire at a time and fix single problems.
I used what I learned from the spare screen to get the installed screen working. It was more challenging than changing pin names, I had to manually activate pins before sending commands, and I checked which pins needed to use the serial port and which could use general-purpose IO. I also checked the MIDI port on the front and fixed two crossed wires.
I made enough changes to the schematic to redraw them, so I drafted them on the computer. I enjoyed drawing them by hand the first time, but if I make more wiring changes, I can easily update the drawing.
I ran magenta wires between the components and wrote all the necessary pin labels. The drawing was similar to the sketch I made on paper.
I confirmed the wiring for my physical operators by writing code to implement them. For the encoder pushbuttons, I made them increment the encoder count by five instead of one. I printed the potentiometer values whenever one changed, and the graph showed smooth operation.
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
Completed projects from year 8
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
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