Crazyproto
sobuildit·crazyproto·HEX-SOT23/crazy-proto - SOT23 - Hex.kicad_pcb
About the Crazyproto PCB
Crazyproto is an open source PCB design by sobuildit, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 48.3 × 48.3 mm, with 82 components from 4 distinct parts.
By type, the board carries 80 jumpers and 1 connector.
From the project
Crazy ideas for electronics prototyping. Sometime we just have fun with it.
Hex-SOT23 Can we use hexagonal circuit traces to define a fixed layout to route a non-trivial circuit to a SOT23 footprint (e.g. NPN Bipolar transistor) such that the component placement alone defines the circuit?
The concept is simple enough, the nodes (or wires/pads) in the centre {1,2,3} are the device pins, as identified on the PCB. The connection nodes are {A,B,C} and the 'power' nodes are {Vcc,Gnd} but those are just names, you can use them for anything.

Crazyproto bill of materials (BOM)
82 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_01x05_Male | Pin_Header_Straight_1x05_Pitch2.54mm | J1 |
| 5 | Jumper_NC_Small | NC_0603_HandSoldering | JP1, JP2, JP3, JP4, JP5 |
| 75 | Jumper_NO_Small | R_0603_HandSoldering | JP6, JP7, JP8, JP9, JP10, JP11, JP12, JP13 +67 |
| 1 | Conn_01x03_Female | SOT-23 | SOT23 |
Crazyproto design files
The KiCad project lives in the sobuildit/crazyproto repository on GitHub; these links point at the commit this page was built from.
Crazyproto: common questions
How big is the Crazyproto PCB?
The Crazyproto measures 48.3 × 48.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Crazyproto?
82 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the Crazyproto design files?
From the sobuildit/crazyproto repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Crazyproto design in my own project?
Yes, under the terms of its GPL-3.0 license, which sobuildit chose for the repository.