We're halfway through the story. It's time to close chapter 2.
Sound and Light
In chapter 1 I turned a broken vintage turntable into a working one. The defect AC motor was thrown out and replaced by a microcontroller driven one.
This turns the table into an autonomous device that knows how fast it should pin. It adapts its behavior to that knowledge.
That is a tactical change - from defect to working.
But a first enchantment is achieved. The table still looks the same as the day it was built, but under the hood - invisible to the eye - it has a brain ...
And in this chapter, the table became visible enchanted.
I added a speed indicator. This 3-LED mini-module listens to the speed regulator and shows what it's doing. Read chapter 3 for the higher power plans with this module and the Infineon RGB shield.
Next was the light organ. This is fully implemented in firmware. It uses Fast Fourier Transform to analyze bass, middle and treble parts of the signal.
It's also an autonomous module
At this moment, the organ drives three LEDs - and that is going to stay like that, but once more: read chapter 3 for the higher power plans with this module and the Infineon RGB shield.
I added a mechanical arm to the organ.
The arm has a sole (autonomous ) responsibility to hide the light organ inside the belly of the table. The light organ asks the motor to pop op when it feels like animating the scene.
That's how the whole enchanting set-up is done. All options can be removed or plugged in as desired. The whim of the day can have an impact on the table.
And as a preparation for the next chapter, I've started to make some more space under the turntable.
I'll have to check if this impacts the strength of the case. First tests are promising.
side story: why do you see photos from another turntable in this post?
Because I fixed that this month.
A lady asked my wife if I could fix her 1964 Philips console. It's a tube radio and amplifier with an automatic changer turntable.
The radio worked but the turntable was defect. A good working (but newer, lower in the food chain) changer from 1970 had to offer its life to fix the console.
That's how it goes in enchanted stories. They are often hard and violent. The life of looser isn't worth much in the fairy-tale world if it's not Walt Disney who writes the script.
(in total 20 minutes of video. Still well below peteroakes' average )