2021-11-12 (F) Weekly Summary

The switches were a little glitchy, so I added pull-up resistors, and I ran low on Vcc pins, so I added a scrap of stripboard to ensure I'd have plenty.
Bottom electronics

I got the display to show my tempo, but the buttons were still acting squirrelly. Despite the interference, I was delighted that the correct rate showed and updated quickly.
Working display

I calmed the erratic button behavior a bit with a capacitor over the misbehaving contact. Next, I added power and data lines to the front of the case. I wanted to use a full-size MIDI port and a USB data line, but the enclosure was just too small.
Inside view

For a whole day, I couldn't figure out why my MIDI data wasn't working. I checked as much as I knew, and sometimes I would see data come through, but it was never correct.
MIDI signals are not working

I had the idea to check my outgoing data with the Arduino connection. The tricky part was that Arduino doesn't have a setting to look at the serial port with anything other than typical baud rates, and MIDI falls between the supported ones. I used PuTTY, but I still got nonsense until I swapped out my Serial ↔ USB converter. The one I was using didn't allow unusual rates either.
USB ↔ serial converter with limit capability

With a new USD converter, I assumed my data was outputting correctly, but the MIDI device still wasn't getting a good signal. I opened the panel and found that I was inadvertently grounding one of the pins because I had a metal case. I cobbled together a headphone to MIDI converter, and I finally saw a good signal at the computer!
Converter cobbled together

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

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