Eli Silverstein

index Reel 01 ✦ instruments, devices, boards, apps

Technology

ELECTROCHEMISTRY — I do lots of embedded audio DSP with microcontrollers and FPGAs, some analog electronics, and lately a lot of PCBs and enclosures. The new work is up top; scroll through the leader for the older projects.

I really enjoy making my own audio processing and hardware, and trying to do something different than what's already out there.

NEW WORK · 2026
FRAME 01 · internship

Vision demo

An AI vision demo device I built at FemtoAI: six stacked PCBs, cameras, and on-device classification, gesture, and person detection on their neural silicon.

FRAME 02 · instrument

Forearm guitar

A flex-sensor MIDI controller with frets spaced like a guitar, worn on the forearm. With Ryota Sato.

FRAME 03 · app · paper

Sparse Neural FX

A WaveNet guitar amp pruned by 90% that sounds the same, running on an iPhone. Paper and demo with Ryota Sato at DAFx26.

FRAME 04 · modular

Micro eurorack

The smallest possible eurorack case, custom power connectors, brass standoffs, and open-source modules reflashed with my own firmware: a Prophet-6 emulation, a waveshaper, digital oscillators.

FRAME 05 · hardware

Matrix router

Routes 4 stereo inputs to 4 outputs with a button grid, tileable. My first 4-layer PCB; enclosure by Nati Grinkrug.

FRAME 06 · team

RoboSub

Stanford Student Robotics’ sub. I do the power electronics and mentor the electronics side.

FRAME 07 · hardware

HX controller

A MIDI controller and multi-FX pedal on a Daisy Seed for my HX Stomp: more footswitches, a looper button, and 5V-to-9V power.

Here lie the older works

Archive

MMXIX – MMXXIV
FRAME 08

Doodle Wave

A polyphonic MIDI-controlled synthesizer with a touchscreen you draw your audio waveform on.

FRAME 10

Smartwatch

A touchscreen field recorder with an innovative cube-based GUI.

FRAME 11

FPGA audio codec

A 16-bit 48 kHz I2S FPGA audio codec implemented in the open-source iCE40 FPGA, with some basic realtime audio DSP.

FRAME 12

In-air VCO

An instagram-solder style VCO that could hang around your neck :)

FRAME 13

Discrete 8-bit DAC

A DAC and level shifter built for an Arduino UNO, but configurable for any digital processor.

FRAME 14

Audio DSP

This is an area I find very fun, and is actually how I got into technology in the first place.

FRAME 15

Digital watch

A little multifunction clear-OLED prototype watch with custom graphics, a menu, and field-recorder capabilities through a MEMS microphone.

FRAME 16 · pdf

Modular synthesizer module

An old project from high school that I made a project PDF of. It was the first time I made a PCB and really messed around with circuits.

Synth module write-up

I'm currently working on making housings for some of these projects so they're more like products, but here they are in their current state.