Drag blocks. Watch signals. All in the browser.

Try it live or see it in a textbook
LIVEqpsk_demo
Bit SourceSRC
modQPSK
RRC FilterDSP
β · roll-off0.35
AWGN ChannelCHN
ConstellationSINK
EVM7.9%
WHAT'S NEW

Fresh in Potik

Newest blocks, high gain, low modesty.

8 recent · updated weekly
v0.0.11 current
HeaderNEWHeaderUI
UINEWHeader
HeaderJun 18Added header.

If you open the lab - it has lab help and controls.

If you are in a freedive - it allows you to save your work or submit it as a lab

Finally, a notch in Potik!
Spotlight for blocksUI
UI
Spotlight for blocksJun 11Add new blocks via global search - Ctrl+K | Cmd+K
Oh no you didn't...
ThemesUI
UI
ThemesJun 9Yeah, we have themes now. Light, dark, and a pysdr (white). Pick one in the settings menu.
Oh well, look at that...
Submit a lab menu itemLab AuthoringCommunity
CommunitySubmit a lab menu item
Lab AuthoringMay 29You can now submit your own lab with a click of a button. Pick the name, write few words, and PR will be created automatically. It will be published after review
Behold, the power of Lab Authoring awaits you!
Want to contribute? Here is GitHub!Community
Community
Want to contribute? Here is GitHub!May 29GitHub is now open for community contributions — from new labs to bug reports.
potik-community on GitHub
Haters gonna hate, reporters gonna reportPlatform
Platform
Haters gonna hate, reporters gonna reportMay 14See something off? IQ-channel off? Nasty colors? The report button is waiting for you in the bottom-right corner. It even takes a screenshot for you, wow.
Report
NEWDawn of Poti the CoachUI
UINEW
Dawn of Poti the CoachMay 10Meet Poti, your lab partner — Potik's friendly signal-critter coach who guides you hands-on through your first build, demonstrating how to drop blocks, wire them together, and turn the knobs, then handing you the cursor to try it yourself
Talk to Poti
NEWKnobs EmphasisUI
UINEW
Knobs EmphasisApr 30Added an emphasis effect on the knobs to let the user know they need some touch! Works only the first visit.
Take a look (open in incognito)
View all updates
01 · PANELS

Drop a live lab into any page with panels

Already powering live labs on pysdr.org. One line of markup turns any course note, textbook or blog post into an interactive station — the reader tunes a knob, the math responds.

Already in use at pysdr.org — live signal-chain labs embedded right into the textbook.
02 · WHAT IT DOES

Build it, run it, learn from it.

One canvas takes you from a blank graph to a running instrument you can share — the same engine that powers the editor and every embed.

BUILD

Wire the whole chain

Drag PRBS, FIR, mixers, channel models, CFAR and beamformers onto the canvas and connect them into a graph. Every block exposes its real parameters.

SIMULATE

It runs as you tune

Your graph compiles to a WebAssembly worker and runs live. Scopes, spectra, constellations, MSO, range-Doppler, range-angle and polar PPI update in real time.

LEARN

Read, fork, embed

Start from curated read-only labs, fork them, and rewire. Drop any lab into a lesson or post as an embed — the reader turns a knob and the math responds.

03 · FEATURED DEMOS

Built for the whole signal chain.

Worked examples ship with the editor — fork, retune, rewire. Every demo is one URL away from a runnable lab.

2 live · 4 coming soon
new sim every two weeks
COMMS

BPSK in noise

awgn channel · live constellation · EVM

src → mod → awgn → sink
TIMING

Sampler & timing recovery

symbol clock · sample instants on the eye

src → sampler → ted → loop
RADAR
COMING SOON

Range-Doppler GPU tracker

pulsed LFM · 64 pulses · 2 targets

src → mixer → mf → fft² in progress
SPECTRUM
COMING SOON

Windowed FFT

hann · 4k bins · two-tone test

src → window → fft in progress
OFDM
COMING SOON

OFDM subcarriers

64-FFT · 4 pilots · DC null

bits → qam → ifft → cp in progress
CONTROL
COMING SOON

PID step response

Kp=2 · Ki=0.6 · Kd=0.18 · 18% OS

ref → pid → plant in progress