HardLabs

RearExtension

LRGuess·BigSaltyKeyboard-65ROL·PCB/RearExtensionPCB/RearExtensionPCB.kicad_pcb

RearExtension PCB layout, top view — open source board by LRGuess

About the RearExtension PCB

RearExtension is an open source PCB design by LRGuess, published on GitHub. It is a 2-layer board measuring 70 × 20 mm, with 3 components from 3 distinct parts.

Other key parts include the ER_OLEDM0.91_1x-I2C. By type, the board carries 1 IC, 1 connector and 1 switch.

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

From the project

A 65% Keyboard with a rotary encoder, OLED screen and LEDs

This repository contains all the resources necessary to hack and produce the 65% keyboard I designed by from scratch! The main features: 1. 65% layout 2. RBG LED under every key 3. OLED screen for fun 4. Rotary encoder for volume control 5. Pi Pico as main brain

Every feature and placement is to give the keyboard it's own sense of uniqueness and identity! I learnt many things while building this keyboard, here are the biggest ones: - The importance of decoupling capacitors - Why logic level converters are needed - The interactions between Vias and ground fills

RearExtension, from the project README
From the project README

Main components on the RearExtension

ER_OLEDM0.91_1x-I2C

RearExtension bill of materials (BOM)

3 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ER_OLEDM0.91_1x-I2C
U1
1
Conn_01x10
J1
1
RotaryEncoder_Switch
SW1

RearExtension design files

The KiCad project lives in the LRGuess/BigSaltyKeyboard-65ROL repository on GitHub; these links point at the commit this page was built from.

RearExtension: common questions

How big is the RearExtension PCB?

The RearExtension measures 70 × 20 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RearExtension?

3 components, from 3 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 RearExtension design files?

From the LRGuess/BigSaltyKeyboard-65ROL 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 RearExtension design in my own project?

The repository has no license, so all rights stay with LRGuess. Use it as a reference, and ask the author before reusing the design.

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