AI circuits that actually work
Describe a gadget in one sentence. Get firmware, wiring, a live simulation and a fab-ready PCB. Every wire is interrogated against your board's real pins.
Design assistant
220Ω series resistor limits LED current to ~13.6 mA at 5 V. Button uses the internal pull-up on pin 2.
How it works
Idea to hardware in three steps
Say the thing
Plain English. No datasheets, no jargon. Pick a board or let it ask you.
We grill it
Firmware + wiring get generated, then interrogated. Every connection is checked against your board's real pins.
You ship it
Run it in the browser, flash it over USB, then generate the PCB and export Gerbers when it's time to make it real.
New · AI PCB designer
From prompt to fab-ready PCB
The board on the right isn't an illustration. It was placed, routed and design-rule-checked by our engine when this page rendered. The same engine reviews every board like a senior PCB engineer would:
- Functional groups placed together: an LED and its resistor are one circuit, and the board shows it
- Repeated parts snap into clean arrays, so 64 sensors become a grid, not soup
- A grade with real strengths, weaknesses and one-click fixes
- Edit it by chatting: “cluster the resistors”, “make it easier to hand solder”
- Copper independently verified against the netlist, then exported as Gerbers
Rendered live by the actual engine. Grade, DRC and copper are derived, not marketing.
Why it's different
“Trust me bro” isn't an engineering strategy
Anyone can ask a chatbot for Arduino code. We interrogate every wire like a paranoid senior engineer, before you plug anything in.
A random chatbot
- ✗ Pin 99 doesn't exist
- ✗ No resistor, RIP LED
- ✗ GPIO34 is input-only
- ✗ Never compiled once
Banana Board
Banana Board- Board pin rules
- Electrical rules (ERC)
- Compiles (arduino-cli)
- Power budget
- Copper matches netlist
Validated, not hallucinated
Every wire is checked against a real netlist: power, ground, double-drive, strapping pins, ADC channels. If it can't pass, it doesn't ship.
A real PCB, not a picture
The same design becomes a placed, routed 2-layer shield: functional groups clustered, sensor arrays gridded, copper independently verified. Export fab-ready Gerbers for JLCPCB or PCBWay.
A senior engineer's review
Every board gets a grade, real strengths and weaknesses, and one-click fixes like “R3 sits across 4 net paths”, not vague vibes. All computed, never hallucinated.
Every AI edit explains itself
“Moved R1 beside D1, same functional pair. Copper −6% · quality 71→73 · DRC clean.” Measured numbers with every change, so you always know why.
Live in-browser simulation
Compile and run the sketch on a simulated board right in the tab. Watch the LED blink and read the serial monitor before you touch hardware.
Flash to real hardware
Plug in an Arduino Uno or Nano and upload straight from the browser over USB, with no IDE and no toolchain. From prompt to blinking LED in one tab.
Optimization profiles
One click re-optimizes the board for what you care about: compact, hand-solder friendly, shortest routing, or just beautiful. Same engine, different priorities.
Refine by chatting, Cursor-style
“Move the LED to GPIO4.” “Cluster the resistors.” “Make it easier to hand solder.” The chat edits the circuit AND the PCB, with full version history.
Diagrams + a parts list you can act on
Color-coded schematic, breadboard view, pin table, and a bill of materials with DigiKey/Mouser/Amazon links. Everything you need to actually build it.
Real pin maps for 11 boards
Maker Tools
Free maker tools, no sign-up
Everyday electronics tools built from the same verified engine. Use them standalone, or let Banana Board do the whole board for you.
PCB Trace Width Calculator
IPC-2221 width, resistance and voltage drop for a target current.
Open toolResistor Color Code Calculator
Decode 4, 5 and 6-band resistors and SMD codes, both directions.
Open toolBOM Cost Calculator
Total a parts list with quantities and distributor search links.
Open toolOnline Gerber Viewer
Drop a Gerber or drill file and inspect the copper in your browser.
Open toolComponent & Symbol Search
Search common parts for pinouts, current draw and wiring notes.
Open toolKiCad Footprint Reference
Standard SMD and through-hole footprint dimensions at a glance.
Open toolFind us on
Build your next circuit in a sentence
From idea to validated firmware, a running simulation, and a fab-ready PCB, with an AI engineer reviewing every step.