ExoSynk

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ExoSynk

@exosynk
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The Virtual Electronics Lab. Design circuits in your browser, wire them up, run real physics — then (later) order your build as actual hardware.

Joined April 2026
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15 contributions in the last year · 4 active days · peak 8/dayLessMore
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ExoSynk@exosynk·3h
v0.12.9 is live. Three new parts in the 2D lab: • ESP32 DevKit — full GPIO/analog/3V3 • Raspberry Pi Pico — GP0..GP15 + VBUS + 3V3 • Hobby servo — rotating arm follows the position prop 0..180° Plus: the DC motor actually spins in the sim now (direction follows current polarity, speed scales with amps). Built a demo that uses all of it — ESP32 driving a servo with a status LED. Five parts, twenty lines of code. Full walkthrough: @L/exosynk/esp32-servo-sweep Or just Get a free forkable copy: @exosynk/esp32-servo-sweep
Tutorial
Your first ESP32 build: a servo that sweeps
@exosynk

Five parts and twenty lines of code. How the ESP32 talks to a hobby servo, why the status LED lives on GPIO23, and how to verify every wire in the sim before you touch hardware.

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Project
ESP32 servo sweep with status LED
@exosynk

A 5-part starter project using the new ESP32 DevKit + hobby servo. GPIO18 drives servo signal, GPIO23 lights a status LED while the code is running.

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profile.md

ExoSynk — The Virtual Electronics Lab

Hi. We're ExoSynk — a cloud-based lab where anyone can design real electronics in their browser. No simulator downloads, no dead components, no cables on the floor.

What you can do here

  • Design circuits in a real schematic editor — drag parts, route wires, snap to grid.
  • Run honest simulation (Modified Nodal Analysis, not a toy) — LEDs glow at the right current, resistors respect Ohm, components can burn out.
  • Write Arduino code next to your circuit — digitalWrite(13, HIGH) actually lights the LED.
  • Share with a link — public labs live at /<your-handle>/<project>, forkable by anyone.
  • Learn from others — read tutorials in /learn, star the ones that taught you something, comment to ask.

Who we're for

Students, makers, hobbyists, professional engineers prototyping at their day job, hardware startups, educators, researchers. If you design electronics, this is for you.

The roadmap

  • ✅ 2D lab, accounts, community, messaging, tutorials — shipped.
  • 🚧 Part rotation + wire-to-wire junctions — just shipped (v0.8).
  • 🔜 3D lab, then order your design as a parts kit or pre-built product (v1.x).

Follow this account for announcements. DMs are open.

Built by @yashpatil · Based in India, shipping globally.

Tutorials
Your first ESP32 build: a servo that sweeps
Five parts and twenty lines of code. How the ESP32 talks to a hobby servo, why the status LED lives on GPIO23, and how to verify every wire in the sim before you touch hardware.
022h ago
Voltage dividers: how two resistors split a signal
Two resistors in a row, a tap in the middle, and suddenly you can shrink any voltage down to the one your circuit actually needs. The one formula to memorize.
022d ago
RC circuits: capacitors remember
A resistor and a capacitor. Close the switch and the capacitor charges — but not instantly. The curve is exactly what the oscilloscope shows.
012d ago
Your first circuit: blink an LED
A 9V battery, a resistor, and an LED. Why the resistor matters, how to read current, and how to fix it when the LED goes dark.
022d ago
Public labs
ESP32 servo sweep with status LED
A 5-part starter project using the new ESP32 DevKit + hobby servo. GPIO18 drives servo signal, GPIO23 lights a status LED while the code is running.
0034h ago
Torch (LED Flashlight)
A complete working torch with 3D enclosure design. Battery, switch, resistor, LED — the classic first electronics project.
0021d ago
RGB color fader (Arduino PWM)
Arduino drives a common-cathode RGB LED through three 330Ω resistors. Code cycles R, G, B via analogWrite — classic PWM color mixing.
0031d ago
Blink
The hello-world circuit: 9V battery, 330Ω resistor, LED, ground. Fork it and try a 3V battery, or a 100Ω resistor to watch the LED burn out.
0052d ago
Voltage divider demo
Two 10kΩ resistors in series across a 9V battery. The tap in the middle sits at 4.5V. Try different R1/R2 ratios.
0032d ago
Dark-activated night light (LDR + NPN switch)
Classic analog circuit — no Arduino. An LDR forms a voltage divider that drives an NPN base. LED turns on only when ambient light drops. Four parts, one transistor, zero code.
0022d ago
7-segment counter (0-9 on Arduino)
Seven Arduino digital pins drive a common-cathode 7-segment display. A shared 330Ω resistor limits current to ground. Code counts 0→9 in a loop.
0022d ago
RC lowpass — capacitor charging curve
9V battery, 10kΩ resistor, 100μF capacitor. Time constant τ = 1 second. Open the oscilloscope on V_cap to see the exponential rise.
0022d ago