2021-06-04 (F) Weekly Summary

I finally got a reliable infrared strength meter on my screen, but it only confirmed my fear that I would never get a usable reading. I couldn't see any difference between open-air and a finger, or even reflective metal, in the scanning area. I decided to scrap the IR sensing. Maybe I'll add a motion sensor.
Failed IR aerial

I found a GitHub repo with an Arduino library that used the ESP32 to emulate a Bluetooth keyboard. I was worried this wouldn't be simple, or maybe not even possible, but plenty of people want the same thing, and T-vK made an outstanding contribution.
Wireless keyboard

I added a screen that would display all four finger rod pressure readings. A display like this will be crucial when I build new devices and adjust the screw tightness. The screen is activated when I flip one of the auxiliary switches.
Finger rod pressures

I couldn't correctly adjust the tension on all the finger rods. After some thought, I figured it would be best to add a rubber bumper into the platform, and I chose an o-ring that anyone can buy.
14ga O-ring measurements

I needed to model a torus, which is donut-shaped. Unlike basic shapes in OpenSCAD, this doesn't use one command. The rotate_extrude() function can turn a circle into a hoop. I whipped up the form and added eight to the platform, and it was ready for printing.
Divots for my O-rings

I moved some of the hardware to the new platform. I left the tall aerials on my old one, but I printed the bases because they held the Velostat in place. This time, I sealed rubber O-rings under the copper tape and mounting bolt so the finger rods would "float." Once installed, I booted to the tuning screen and got all four working.
Tuning pressure sensors

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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