Build something real.
Circuit World.Somebody already built it.
8,800+ published open-hardware boards, indexed by the part each one is built around. Open one, and start yours from it.
A replay of Circuit World. Four pointers gather on Raspberry Pi among its platforms; one presses it, and the directory opens that shelf: modular-biped by makerforgetech (83 × 39 mm · 26 parts · GPL-3.0, 489 likes), cubesatsim by alanbjohnston (77 × 70 mm · 31 parts · GPL-3.0, 413 likes), bcflight by dridri (66 × 40 mm · 56 parts · GPL-3.0, 168 likes), cm5\_minima\_rev2 by piecol (55 × 57 mm · 102 parts · CERN-OHL-S v2, 163 likes), apple2-io-rpi by tjboldt (90 × 78 mm · 24 parts · MIT, 138 likes), cm4-carriers by jkiv (90 × 90 mm · 42 parts · BSD-2-Clause, 129 likes), Pi1541io by hackup (65 × 56 mm · 57 parts · CC BY-SA 4.0, 108 likes), ribbit-network-frog-hardware by ribbit-network (84 × 50 mm · 171 parts · MIT, 106 likes).
heypcb/Circuit World/ Raspberry Pi
heypcb · Circuit World · Open hardware
Circuit World
Find a board someone already built, and start yours from it.
Search 8,800+ boards, makers and tags
↵
RoboticsKeyboardsAudioRFPowerIoTComputingToolsRetroLightingDisplaysWearablesDev boards
Explore by platform
Boards that name the part they are built around.
ESP32
Arduino / AVR
Raspberry Pi
STM32
nRF52RISC-V
modular-biped
by makerforgetech·Sep 17, 2026
83 × 39 mm · 26 parts · GPL-3.0489
cubesatsim
by alanbjohnston·Sep 17, 2026
77 × 70 mm · 31 parts · GPL-3.0413
bcflight
by dridri·Sep 17, 2026
66 × 40 mm · 56 parts · GPL-3.0168
cm5\_minima\_rev2
by piecol·Sep 17, 2026
55 × 57 mm · 102 parts · CERN-OHL-S v2163
apple2-io-rpi
by tjboldt·Sep 17, 2026
90 × 78 mm · 24 parts · MIT138
cm4-carriers
by jkiv·Sep 17, 2026
90 × 90 mm · 42 parts · BSD-2-Clause129
Pi1541io
by hackup·Sep 18, 2026
65 × 56 mm · 57 parts · CC BY-SA 4.0108
ribbit-network-frog-hardware
by ribbit-network·Sep 17, 2026
84 × 50 mm · 171 parts · MIT106- AI work included each month
- Up to 5 projects
- Low and High effort
- Enclosures and 3D product design
- More AI work included each month
- Unlimited projects
- Adds Max effort
- More work in one turn before it pauses
- More AI work included each month
- Adds Ultra effort
- More work in one turn before it pauses
- Our highest AI work allowance, included each month
- More work in one turn before it pauses
Espressif Systems, Arduino, Raspberry Pi, STMicroelectronics, Nordic Semiconductor, RISC-V International marks are trademarks of their owners, shown here only to say which part a board is built around; no endorsement is implied.
Boards shown: modular-biped · makerforgetech · GPL-3.0 / cubesatsim · alanbjohnston · GPL-3.0 / bcflight · dridri · GPL-3.0 / cm5\_minima\_rev2 · piecol · CERN-OHL-S-2.0 / apple2-io-rpi · tjboldt · MIT / cm4-carriers · jkiv · BSD-2-Clause / Pi1541io · hackup · CC-BY-SA-4.0 / ribbit-network-frog-hardware · ribbit-network · MIT
Build your hardware today.
Pick a plan, switch anytime, cancel whenever.
MonthlyYearly−10%
Starter
Build an MVP or a demo.
$20/mo
Billed monthly
Includes:
Get Starter
Recommended
Pro
For a steady stream of boards.
$60/mo
Billed monthly
Everything in Starter, plus:
Get Pro
Max
For teams shipping multiple products.
$200/mo
Billed monthly
Everything in Pro, plus:
Get Max
Ultra
For all-day building, every day.
$500/mo
Billed monthly
Everything in Max, plus:
Get Ultra
Need more for your team? Enterprise
Before you order.
Every board is checked against real parts and real fab rules before it ships.
Fig. 05 · Field robot
01
Real parts.
Verified libraries, pin maps, and datasheet limits. Not placeholder footprints.
02
A real pass.
Electrical, layout, and fab checks on the actual design, with fixes instead of just flags.
03
Yours to keep.
Gerbers, STEP, and editable CAD in portable formats. Any fab, any tool.
Build the future.
The boards you design here leave the screen. They fly, drive, and launch.
