Buran-Ortho

ScatteredDrifter·Buran-Ortho·pcb/knobdeavour.kicad_pcb

About the Buran-Ortho PCB

Buran-Ortho is an open source RP2040/RP2350 PCB design by ScatteredDrifter, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 224.4 × 97.8 mm, with 100 components from 24 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the NCP1117-3.3_SOT223, W25Q128JVS and SRV05-4. By type, the board carries 41 relays, 22 diodes, 15 capacitors, 7 resistors, 5 connectors and 4 ICs.

It belongs with the keyboards designs in this gallery.

From the project

A 39-key orthogonal keyboard with support for two knobs, based on a rp2040

For the top-part of the case there are several options available, where each of them was designed for a specific layout.

Another beautiful case is to be found here. Maybe consider it, seems to be constructed better overall.

the pre-compiled file for Vial and the whole Qmk-userspace for this keyboard can be found here

To enter the bootloader - which is necessary in order to flash a new firmware - press the button next to the encoder on the back of the pcb and plug-it into your keyboard while keeping the button pressed. It should show up as a regular usb-stick in your file explorer now and…

Buran-Ortho, from the project README — From the project README

Main components on the Buran-Ortho

NCP1117-3.3_SOT223 W25Q128JVS RP2040 SRV05-4

Buran-Ortho bill of materials (BOM)

100 components, 24 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	NCP1117-3.3_SOT223	SOT-223-3_TabPin2	U1
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U2
1	RP2040	RP2040-QFN-56	U3
1	SRV05-4	SOT-23-6	U44
1	C9002 12MHZ Crystal	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y0
1	USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J0
1	BREAKOUT	PinSocket_1x05_P2.54mm_Vertical	J1
1	CONN_01X03_MALE Conn_01x03_Male	PinSocket_1x03_P2.54mm_Vertical	J2
1	Conn_01x02_Female	PinSocket_1x02_P2.54mm_Vertical	J3
1	CONN_01X01_MALE Conn_01x01_Male	PinSocket_1x01_P1.27mm_Vertical	J4
1	C69688 polyfuse	Fuse_1206_3216Metric	F0
41	KEYSW	MX-Alps-Choc-1U-NoLED	K1, K2, K3, K4, K5, K6, K7, K8 +33
2	RotaryEncoder_Switch	RotaryEncoder_EC11	SW1, SW2
1	SW_PUSH	SW_SPST_TL3342	SW3
1	C318884 RESET	SW_SPST_TL3342	SW4
22	BAV70	SOT-23	D1, D2, D3, D4, D5, D6, D7, D8 +14
3	10U 10u	C_0805_2012Metric	C1, C4, C17
2	22PF 22pf	C_0805_2012Metric	C2, C3
8	100N 100n	C_0805_2012Metric	C5, C6, C7, C9, C11, C12, C13, C14
2	1u	C_0805_2012Metric	C8, C10

Show 4 more

Qty	Part	Footprint	Refs
2	1k	R_0805_2012Metric	R1, R5
2	27	R_0805_2012Metric	R2, R3
2	5.1K 5.1k	R_0805_2012Metric	R6, R7
1	10K	R_0805_2012Metric	R8

Buran-Ortho design files

The KiCad project lives in the ScatteredDrifter/Buran-Ortho repository on GitHub; these links point at the commit this page was built from.

Buran-Ortho: common questions

What microcontroller does the Buran-Ortho use?

The Buran-Ortho is built around the RP2040, from the RP2040/RP2350 family.

How big is the Buran-Ortho PCB?

The Buran-Ortho measures 224.4 × 97.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Buran-Ortho?

100 components, from 24 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Buran-Ortho design files?

From the ScatteredDrifter/Buran-Ortho repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Buran-Ortho design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which ScatteredDrifter chose for the repository.

Can I test firmware for the Buran-Ortho without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.