D-Lev Engineering Codex

@[email protected]
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We are building an open-source hardware, performance-quality, FPGA-based digital theremin, based on Eric Wallin's D-Lev project.

Twoots probably from @wormyrocks / @bit_bash

our website (under construction)https://d-lec.github.io
Original D-Lev documentationhttps://d-lev.com
Eli Silverhttps://elisilver.com
Evan Kahnhttps://eka.hn
Show threadD-Lev Engineering CodexAug 27, 2024
@ Theremin people: these are not quite ready to productize / sell yet.
However: if you have an electrical engineering / embedded systems background and I've talked to you at some point in the past three years about participating / contributing to the project, now may be a good time to get involved. -ESK
Show threadD-Lev Engineering CodexAug 27, 2024
When (if) these boards work, they will feature a few original circuits:
- flexible power supply: standard 5V USB, or a barrel jack adapter or 12V USB-C/PD
- Dual, modular ESS DACs; the secondary DAC is optional, and drives an offboard, isolated balanced stereo out
- 93% efficient, class D speaker amp that can drive up to 12 watts per channel into a 4-ohm load, with a 3-9V input voltage range; based on a relatively new IC from Diodes Incorporated
- Onboard USB/Serial and USB/MIDI conversion
D-Lev Engineering CodexAug 27, 2024
At long last, beginning work on new multi-board I/O assembly with option for dual modular DAC, buffered balanced output, and 12Wpc speaker output with USB Power Delivery. With many many thanks to @sidprice and @jaxter184 on the overall systems design and architecture planning back in January, as well as Raph A., and Kate W. from the NYC Resistor community.
D-Lev Engineering CodexAug 7, 2024
Evan KahnAug 7, 2024
Hypothesis confirmed: you can totally program an Altera FPGA using the wildly over-specced ESP32 programmer that sells for $10 on Amazon.
D-Lev Engineering CodexJul 26, 2024
20 minutes of kicad.
D-Lev Engineering CodexJul 26, 2024
We made it, briefly, onto Danish TV. (0:44 in the clip) https://www.facebook.com/580752437/posts/10161394550812438/?mibextid=rS40aB7S9Ucbxw6v
Susanna Viljanmaa

We got aired by the Danish radio P2!

D-Lev Engineering CodexJul 10, 2024
back on my BS (Building Some theremins)
D-Lev Engineering CodexJul 4, 2024
Evan KahnJul 4, 2024
Finally, a recording I'm happy with: https://youtu.be/knFLQjtinGA?si=Cn_31aPCiYCDexcI
O Holy Night (D-Lev theremin) - International Theremin Camp 2024

YouTube
D-Lev Engineering CodexJun 23, 2024
Evan KahnJun 23, 2024
Sad to be missing #Teardown2024 but in attendance at this year's International Theremin Camp, which will likely be the largest meetup of D-Lev owners to date. Already found two:
D-Lev Engineering CodexJan 31, 2024
Two weeks ago Eli and I went up to New Jersey with Eric Wallin (D-Lev progenitor) to see him give a talk on his invention. We were joined by Nadia Nikolaeva, a thereminist who recently emigrated from Ukraine; she was so taken by the instrument that I loaned her the one off my bench. Nadia took great photos + videos of Eric's demonstration as well as a full performance by Rob Schwimmer, who is as close to a professional as the instrument can claim to have. Behold! https://www.icloud.com/sharedalbum/#B0S5oqs3q7Zpnh
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