Quanta75 Pico
About the Quanta75 Pico PCB
Quanta75 Pico is an open source RP2040/RP2350 PCB design by obsilab, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 317.5 × 163.5 mm, with 216 components from 35 distinct parts.
Its main chip is the RP2040_Stamp, from the RP2040/RP2350 family. Other key parts include the SL2.1A. By type, the board carries 86 diodes, 82 switches, 12 resistors, 11 connectors, 9 capacitors and 8 inductors.
It belongs with the keyboards designs in this gallery.
From the project
Custom 75% keyboard (currently ISO layout only)
All of them are using SMD components but no smaller than 0603 and on hand-solderable pads (a complete through-hole PCB could be coming next 👀). A PCB assembly service is still recommended.
rmkfirmware WIP_ RMK is a keyboard firmware written in Rust, inspired by QMK or KMK. Originally built for the Quanta.
Main components on the Quanta75 Pico
Quanta75 Pico bill of materials (BOM)
216 components, 35 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2040_Stamp | RP2040_Stamp_THT | U1 |
| 1 | SL2.1A CoreChips(和芯润德) | SOP-16_L10.0-W3.9-P1.27-LS6.0-BL | U2 |
| 2 | USB_C_Receptacle_USB2.0 | USB-C-SMD_G-SWITCH_GT-USB-7010EN | J1, J9 |
| 1 | Conn_01x02_Socket VBUS 5V | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x02_Socket 3V3 | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn_01x02_Socket VBAT | PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | Conn_01x04_Socket SWL | PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | USB_A_Receptacle_UBS2.0 | USB-A-TH_KH-AF180ZJ-13.7 | J6 |
| 1 | USB_A_Receptacle_UBS2.0 | USB-A-SMD_903-231A2031S10100 | J10 |
| 1 | Conn_01x01_Socket GND | PinHeader_1x01_P2.54mm_Vertical | J11 |
| 1 | Conn_01x06_Socket GPIOs | PinHeader_1x06_P2.54mm_Vertical | J12 |
| 1 | Conn_01x01_Socket GPIO0 | PinHeader_1x01_P2.54mm_Vertical | J13 |
| 1 | 2A | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 3 | 500mA | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F2, F3, F4 |
| 1 | DIODE | D_SOD-123 | RED1 |
| 1 | RotaryEncoder_Switch | RotaryEncoder_Bourns_Vertical_PEC12R-3xxxF-Sxxxx | RESW1 |
| 72 | SW_Push | SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +64 |
| 1 | SW_Push | SW_Cherry_MX_2.00u_PCB | SW27 |
| 1 | SW_Push | SW_Cherry_MX_1.50u_PCB | SW29 |
| 1 | SW_Push | SW_Cherry_MX_ISOEnter_PCB | SW42 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | SW_Push | SW_Cherry_MX_1.75u_PCB | SW44, SW70 |
| 4 | SW_Push | SW_Cherry_MX_1.25u_PCB | SW58, SW73, SW74, SW75 |
| 1 | SW_Push | SW_Cherry_MX_PCB_6.25u | SW76 |
| 82 | DIODE | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +74 |
| 4 | USBLC6-2SC6 | SOT-23-6_Handsoldering | D83, D84, D85, D86 |
| 4 | 600R | Ferrite_0805_2012Metric | FB1, FB2, FB3, FB7 |
| 1 | 100R 2A5 | Ferrite_0603_1608Metric | FB4 |
| 3 | 600R 500mA | Ferrite_0805_2012Metric | FB5, FB6, FB8 |
| 3 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C4 |
| 2 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C7 |
| 4 | 100uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C5, C6, C8, C9 |
| 4 | 0R | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R8, R12 |
| 2 | 5K11 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4 |
| 4 | 1M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R9, R13 |
| 2 | 56K 20% | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11 |
Quanta75 Pico design files
The KiCad project lives in the obsilab/Quanta75 repository on GitHub; these links point at the commit this page was built from.
Quanta75 Pico: common questions
What microcontroller does the Quanta75 Pico use?
The Quanta75 Pico is built around the RP2040_Stamp, from the RP2040/RP2350 family.
How big is the Quanta75 Pico PCB?
The Quanta75 Pico measures 317.5 × 163.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Quanta75 Pico?
216 components, from 35 distinct parts. The full bill of materials is listed on this page.
Where can I download the Quanta75 Pico design files?
From the obsilab/Quanta75 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Quanta75 Pico design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which obsilab chose for the repository.
Can I test firmware for the Quanta75 Pico 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.
More boards in Quanta75
RP2040/RP2350Quanta Keyboard PCB (Bare RP2040 JLCPCBA optimized)
320.7 × 158.3 mm234 parts2LCERN-OHL-P-2.06
RP2040/RP2350Quanta75 RP2040Stamp JLCPCBAoptimized
320.7 × 165.1 mm217 parts2LCERN-OHL-P-2.06
RP2040/RP2350Quanta75 RP2040Stamp
317.5 × 163.5 mm216 parts2LCERN-OHL-P-2.06
RP2040/RP2350Quanta75 RP2040Stamp JLCPCBAoptimized.stretch bkup
320.7 × 165.1 mm214 parts2LCERN-OHL-P-2.06
Quanta-ISO-Pico 01
322.6 × 209.9 mm166 parts2LCERN-OHL-P-2.06
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