Easy75

eddyzow·Easy75·pcb/easy75.kicad_pcb

About the Easy75 PCB

Easy75 is an open source RP2040/RP2350 PCB design by eddyzow, published on GitHub under the MIT license. It is a 2-layer board measuring 362 × 133.4 mm, with 255 components from 12 distinct parts.

Its main chip is the Raspberry_Pi_Pico, from the RP2040/RP2350 family. By type, the board carries 168 diodes, 85 switches, 1 IC and 1 connector.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

Custom 75% mechanical keyboard. Features include switch hotswap, gasket mount, 1.3" OLED screen, custom firmware, rotary encoder, custom printed circuit board (PCB), lubricated switches and stabilizers, and more! Created for Hack Club's Highway program.

because sometimes nine keys isn't enough...

A custom 75% gasket-mounted mechanical keyboard run with a Raspberry Pi Pico. Features include 4.5-degree ergonomic incline, switch hotswap, 1.3" OLED screen, custom firmware, rotary encoder, custom printed circuit board (PCB), lubricated switches and stabilizers, and more! Created for Hack Club's Highway program.

Easy75 Sound Test - Stock Akko V3 Creamy Blue Pro, Stock Durock V3

Easy75, from the project README — From the project README

Main components on the Easy75

Raspberry_Pi_Pico

Easy75 bill of materials (BOM)

255 components, 12 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	Raspberry_Pi_Pico	Raspberry_Pi_Pico	U1
1	OLED_128x64	OLED_128x64	J1
73	Keyswitch	Hotswap_MX_1.00u	S1, S2, S3, S4, S5, S6, S7, S8 +65
1	Keyswitch	Hotswap_MX_2.00u	S28
2	Keyswitch	Hotswap_MX_1.50u	S29, S42
2	Keyswitch	Hotswap_MX_1.75u	S43, S67
2	Keyswitch	Hotswap_MX_2.25u	S55, S56
3	Keyswitch	Hotswap_MX_1.25u	S69, S70, S71
1	Keyswitch	Hotswap_MX_6.25u	S72
1	RotaryEncoder_Switch	Encoder_EC11_MX	SW1
84	Diode	Diode_DO-35	D1, D2, D3, D4, D5, D6, D7, D8 +76
84	SK6812MINI	LED_SK6812MINI	D85, D86, D87, D88, D89, D90, D91, D92 +76

Easy75 design files

The KiCad project lives in the eddyzow/Easy75 repository on GitHub; these links point at the commit this page was built from.

Layoutpcb/easy75.kicad_pcb
Schematicpcb/easy75.kicad_sch
BOMBill of Materials - Easy75 (Ver. 2) - Sheet1.csv

Easy75: common questions

What microcontroller does the Easy75 use?

The Easy75 is built around the Raspberry_Pi_Pico, from the RP2040/RP2350 family.

How big is the Easy75 PCB?

The Easy75 measures 362 × 133.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Easy75?

255 components, from 12 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 Easy75 design files?

From the eddyzow/Easy75 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 Easy75 design in my own project?

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

Can I test firmware for the Easy75 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.