I own a defunct turntable from the fifties...


I started the story with a lie. I don't own it. It's not mine. It happens to be in my mansion but it belongs to someone else.

It's a Perpetuum Ebner Musical 1. If you are into beautiful designed products, you'll like the looks:




And I'm going all medieval on that machine that's not mine. It is currently in non-working condition. It must have been in a non-working state for tens of years.

And I'm not making it any better:


At the moment it's more a doomed object than an enchanted one. I took the action picture above a few minutes ago. It's in a dire state of decomposition at the moment.

But I have wild plans


The plan


I'm going to fix it! And I'm going to enchant it straight into the 21st century.

I have good hopes on bringing it back to live (I couldn't wait for this challenge to start so I have been prototyping a fix). And then all options are open.

I've been thinking about making it a home audio wifi streamer. I'd like to use a Shazam-like service that recognizes the song that's playing.

I'd like to post stats on the cloud. I'd like it to be able to decode those satanic backwards played messages that were hot in the 70's Rock scene.

I'd like to ...


Failure is an option


Of all the things on the bucket list above, I have the skills to complete one: fixing it.

For all  the other ideas I don't have the skills. I don't know if the supplied parts are up to the job. I just don't know anything.

So you can find out together with me if this story has a happy end.



Side story: Perpetuum Ebner


The history of the Perpretuum-Ebner company from the German Black Forest reads like a fairy tale by itself.

It's a story of families breaking up, brothers starting a competing factory in the same village, deception, family raws and tactical marriages.

And its setting in the vast and mysterious Black Forest makes it even more daunting.

We'll try to unravel all secrets and conspiracies in this blog...



Table of Contents
Chapter 1: Fix the turntable
1: Perpetuum Ebner Musical 1
2: A Time to Kill and a Time to Heal
3: Preparation for Motor Drive
4: Motor control with Infineon Motor Shield and Arduino UNO
5: Turntable speed sample testbed with Arduino UNO
6: Turntable Speed Sensor design
7: Control Theory - End of Chapter 1
Chapter 2: First Enchantments
8: Digital Light Organ Enchantment
9: Autonomous Servo Lift
10: SMD Time - Solder the IR Speed Sensor PCB
11: Yelp - who can Help me to Compile and Run my First SAMA5D4 C Program
12: Son et Lumiere - End of Chapter 2
Chapter 3: Taming the Board
13: Breakthrough - Run my own C++ Program on the SAMA5D4
14: Digital Light Organ Input Buffer
15: SAMA5D4 Blinky
16: Scope Creep
17: Audio Sampling with 16-bit ADC ADS8343
18: Sending Files to SAMA5D4 over USB
19: Port my Light Organ from Arduino to SAMA5D4
20: Fast Fourier Transform on the SAMA5D4 - End of Chapter 3
Epilogue: Reaching for the Clouds
21: Right-Sizing my Plans
22: My Own C++ Buffered Sampler on the SAMA5D4
23: Building In the Motorized Light Organ
24: Up to the Clouds with Yún
25: Publish or Perish
26: Turntable Finished
Stretch & Boni
Bonus 1a: Remote Light Organ with WiFI pt. 1
Bonus 1b: Remote Light Organ with WiFI pt. 2
Grande Finale: Paho MQTT Client on the SAMA5D4
Related blog
Vintage Turntable repair: Can I fix a Perpetuum Ebner from 1958
Review 1: Atmel SMART SAMA5D4 Xplained Ultra Unboxing and First Steps
Review 2: Atmel SMART SAMA5D4 Xplained Ultra - Building the Libraries from Source
Review 3: Digital Continuous Rotation (360°) Servo Part 1
Review 4: Digital Continuous Rotation (360°) Servo Part 2
Review 5: Atmel SMART SAMA5D4 Xplained Ultra - TCP/IP running
Review 6: Atmel SMART SAMA5D4 Xplained Ultra - LINUX Distro with SSH support
Enchanted Objects: Let's work together to tame the ATMEL SMART SAMA5D4 Xplained Ultra kit
17 bis: Off South...
Review 7: Atmel SMART SAMA5D4 Xplained Ultra - C++ ADC Example on Linux
Review 8: Atmel SMART SAMA5D4 Xplained Ultra - Product Review
Review 9a: Atmel SMART SAMA5D4 Xplained Ultra - Set up ADC Buffer with Hardware Trigger Part 1
Review 9b: Atmel SMART SAMA5D4 Xplained Ultra - Set up ADC Buffer with Hardware Trigger Part 2
Review 10: Atmel SMART SAMA5D4 Xplained Ultra - New Content on AT91.com
1958 Turntable from the Black Forest - Summary of the Enchanted Player Story