75-Keyboard

Jyst7·75-Keyboard·Assets/VGA/pico_vga_sd_aud.kicad_pcb

About the 75-Keyboard PCB

75-Keyboard is an open source RP2040/RP2350 PCB design by Jyst7, published on GitHub under the MIT license. It is a 4-layer board measuring 85 × 56 mm, with 67 components from 30 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the TLV70033_SOT23-5, NC7WZ16P6X and PCM5101A. By type, the board carries 31 resistors, 20 capacitors, 7 connectors, 4 ICs, 4 switches and 1 diode.

It belongs with the keyboards, audio and iot & wireless designs in this gallery.

From the project

Keyboard 75% with a compact tkl layout. It uses qmk and is my first time getting close to a bare chip, im using a module that has the ble part built in but the rest of the stuff I am dealing with on my own mainly power managment

Main components on the 75-Keyboard

TLV70033_SOT23-5 Pico NC7WZ16P6X PCM5101A

75-Keyboard bill of materials (BOM)

67 components, 30 distinct parts.

Qty	Part	Footprint	Refs
1	TLV70033_SOT23-5	SOT-23-5	U1
1	Pico	RPi_Pico_SMD_TH	U2
1	NC7WZ16P6X	SOT-363_SC-70-6	U3
1	PCM5101A	TSSOP-20_4.4x6.5mm_P0.65mm	U4
2	AudioJack3	CUI_SJ-3523-audio-jack	J1, J2
1	Micro_SD_Card	microSD_HC_Molex_104031-0811	J3
1	L77HDE15SD1CH4F	DSUB-15-L77HDE15SD1CH4F	J4
1	USB_B_Micro	USB_Micro-B_Amphenol_10103594-0001LF_Horizontal_modified	J5
1	Conn_01x02	PinHeader_1x02_P2.54mm_Vertical	J6
1	Conn_02x03_Odd_Even	PinHeader_2x04_P2.54mm_Vertical	J7
4	SW_Push	SW_Push_1P1T_NO_Vertical_Wuerth_434133025816	SW1, SW2, SW3, SW4
1	MBR120	MBR120_SOD-123	D1
2	1u	C_0603_1608Metric	C1, C2
4	10u	C_0603_1608Metric	C3, C10, C16, C19
7	100n	C_0402_1005Metric	C4, C5, C6, C7, C8, C12, C13
2	2.2u	C_0603_1608Metric	C9, C11
3	47u	C_0805_2012Metric	C14, C15, C21
2	2.2n	C_0402_1005Metric	C17, C18
2	220	R_0402_1005Metric	R1, R2
2	100	R_0402_1005Metric	R3, R4

Show 10 more

Qty	Part	Footprint	Refs
2	470	R_0402_1005Metric	R5, R6
2	1.8K	R_0402_1005Metric	R7, R8
1	DNF	R_0402_1005Metric	R9
2	47	R_0402_1005Metric	R10, R11
6	1k	R_0402_1005Metric	R20, R21, R22, R27, R32, R37
2	10k	R_0402_1005Metric	R23, R24
3	499	R_0402_1005Metric	R26, R31, R36
3	2k	R_0402_1005Metric	R28, R33, R38
3	4.02k	R_0402_1005Metric	R29, R34, R39
3	8.06k	R_0402_1005Metric	R30, R35, R40

75-Keyboard design files

The KiCad project lives in the Jyst7/75-Keyboard repository on GitHub; these links point at the commit this page was built from.

LayoutAssets/VGA/pico_vga_sd_aud.kicad_pcb

75-Keyboard: common questions

What microcontroller does the 75-Keyboard use?

The 75-Keyboard is built around the Pico, from the RP2040/RP2350 family.

How big is the 75-Keyboard PCB?

The 75-Keyboard measures 85 × 56 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 75-Keyboard?

67 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the 75-Keyboard design files?

From the Jyst7/75-Keyboard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 75-Keyboard design in my own project?

Yes, under the terms of its MIT license, which Jyst7 chose for the repository.

Can I test firmware for the 75-Keyboard 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.