2021-12-05 (Su) EWC_Panel

I added the brackets that will hold up the faceplate to do a test fit and make sure everything was at the correct level. The buttons and screen were all at the right height, but the potentiometer's slider cap was too tall to fit under the LED panels. Fortunately, I can reprint the cap perpendicularly, and it should work. If that failed, I could have printed a different adapter to make the potentiometer sit lower in the panel.

I looked up my stocked optoisolator, a standard model, and found the pinout. Next, I looked up the MIDI input schematic that isolates each system. I built the circuit on a solderless breadboard, but I still had to solder wires to the controller for power, data, and ground. I connected my timer panel with an off-the-shelf cable to confirm I was getting a signal. I had to reverse the incoming wires, but that was 50-50 when I connected them in the first place. I uploaded the Arduino example that reported data from a second serial port, but I was worried because I saw a reversed question mark ⸮. I modified the sketch to print my incoming values in base-8 and base-10, which showed that I was getting "248," which corresponds with the unusual punctuation and MIDI's clock message.
Incoming MIDI opto-isolator circuit

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
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.