DIY Links

Make a Keyboard: A walkthrough for creating a handwired keyboard with a custom layout : ErgoMechKeyboards

• Wireless split ergo endgame
• Wireless Ferris Sweep Compact
• Wireless Skeletyl with 15 degree tenting
• Wireless TBK Dactyl Manuform Mini
• Just finished my first ever keyboard build; a wireless Dactyl CC
• Wireless Dactyl CC Build Log
• Fully Wireless Lily58 Pro : MechanicalKeyboards
• Wireless Dactyl Manuform Build : ErgoMechKeyboards
• Convert Any USB Keyboard To Bluetooth | Hackaday
• Convert mechanical keyboard to wireless : MechanicalKeyboards
  • Adafruit Feather 32u4 Bluefruit LE ID: 2829 - $29.95 : Adafruit Industries, Unique & fun DIY electronics and kits
  • Adafruit Micro-Lipo Charger for LiPo/LiIon Batt w/MicroUSB Jack [v1] ID: 1904 - $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
  • Bluetooth Adapter for Keyboard & Mouse « Handheld Scientific, Inc.
• Converting a 30% Keyboard to Bluetooth: Gherkin + BlueMicro = GherkinBLE : MechanicalKeyboards
  • Gherkin + BlueMicro = GherkinBLE - Imgur
  • Curves - my bluetooth split : MechanicalKeyboards
  • Split Bluetooth Keyboard
• Poor man's 40% "planck": two wireless keypads [Deltaco TB-125] : olkb
• Just realised that r/ErgoMechKeyboards is more apropriate for this post!: ErgoMechKeyboards
• Bluetooth Corne Split Keyboard and BlueMicro840 Build Notes - YouTube
• Bluetooth mini corne : ErgoMechKeyboards
  • Planck + Bluetooth: is it possible easily? : olkb
    • Little adapter from Handheld Scientific, inc. it's powered by the 6700 mah power bank.
• Minidox + BlueMicro = Smallest split wireless keyboard? : MechanicalKeyboards
• Mini Corne with Bluetooth mobile kit : MechanicalKeyboards
• Kyria bluetooth : ErgoMechKeyboards
• ErgoTravel + 2 BlueMicro = Wireless Split Keyboard : MechanicalKeyboards
• How come there are no fully-wireless split keyboards? : ErgoMechKeyboards
• When is "To Many BLE keyboards" too many? : MechanicalKeyboards
• Wireless Das Keyboard Modification - Build log — ivanyu
• Is it possible to design pcb for a wireless split keyboard like the Asterisk? Do they use touch sensor for the keys? : r/ErgoMechKeyboards
  • The Asterisk: Steno Keyboard For Beginners by StenoKeyboards — Kickstarter

• Is it odd to make modern tools with old tools? Making a BFO-9000 with handtools.: olkb
• Circuit Simulator Applet
  • Example
• Amoeba Single-Switch PCBs - DIY Keyboards
  • Another single-switch circuit board - deskthority
  • mtl/keyboard-pcbs: Keyboard PCBs
• cardboard prototype of a simple oppositional keyboard : ErgoMechKeyboards
• Custom column stagger experimenting : ErgoMechKeyboards

• Reddit where do I start if I want to build keyboards
• Designing Dactyl Manuforms (fusion 360 tutorial) : MechanicalKeyboards
• keyboard-pcb-guide/README.md at master · ruiqimao/keyboard-pcb-guide
• How to make a keyboard – the matrix | komar's techblog
• Keyboard Matrix Help
• Introducing Dactyl Chimera, a 3D keyboard test bench. : ErgoMechKeyboards
  • WolfIcefang/dactyl-chimera-keyboard: A mechanical keyboard designed for 3D printing, tinkering, and experimentation.
• Posts | Mark Story
• BYO (from kickstarter)
  • BYO Keyboard Setup Timelapse - YouTube
  • Painless Prototyping
  • Button Board Arduino Hello World - YouTube
  • Button Board V2.1 Setup - YouTube
  • Travis Bumgarner (@travis_the_maker) • Instagram photos and videos
• 40% Keyboards: Socketing a Pro Micro
• Corne V3 Build Log - Imgur
• crkbd/buildguide_en.md at master · foostan/crkbd
• 3x4 Macro Build Guide - Boardsource
• ErgoTravel/BuildInstructions.md at master · jpconstantineau/ErgoTravel
• tg4x/buildguide.md at master · MythosMann/tg4x
• Lily58/buildguide_en.md at master · kata0510/Lily58
• Hand-wired mechanical keyboard build - 65% layout plus left keypad, walnut and aluminium case - Imgur
• Создание собственной клавиатуры ⌨ DIY - Механические клавиатуры
• Squid badge - my first PCB design – Josef Adamčík
  • ESP8266 based room-conditions monitor, part 2: PCB – Josef Adamčík
• Awesome Split Keyboards (there is a "build your keyboard" section)
• First Ergo: Build or Buy? : MechanicalKeyboards
  • The ErgoDox was the first very successful open-source keyboard design back in 2012/2013 (EZ is a vendor that makes it in a factory), but the layout wasn't designed properly and suffers from several issues: the thumb clusters are too far out, and there isn't enough column offset to account for much shorter little fingers.
    • Now that 3D printing is easier and more common, it's possible to make your own contoured keyboard: Dactyl, Katy K80CS or Manuform.
    • adereth/dactyl-keyboard: Parameterized ergonomic keyboard
      • Built-to-order Dactyl/Manuform Keyboard – Oh, Keycaps!
• My DIY keyboard collection ( or how I became a KB-geek…) - deskthority
• How can I use a rotary encoder? – splitkb.com
  • Rotary Encoders Basics - Let's Make Robots / Tutorials - RobotShop Community
• Corne 1.5u or 1u? : ErgoMechKeyboards

• How to Build a Handwired Keyboard : r/arduino
• Ribbon cable - only one MCU for two halves: Scorne - lets split corne with ribbon cable : ErgoMechKeyboards
• DIY 3D printed macropad, handwired & no soldering because of 3D printed hotswap plates with video [guide], for faster custom keyboard prototyping (supports MX switches and choc switches)
• Question about split keyboard interconnect ports
• RIP kbfirmware.com (9 January 2017 - 13 March 2021): olkb
• Progress on my dactyl, one half done, other half almost there. Turns out all my pro micros had headers and wont fit in the case :-O : ErgoMechKeyboards
• handwired reviung31 :) : olkb
• Hand Wired Keyboard, Atreus DIY Build - YouTube
  • Learn more about the Atreus here:
  • https://web.archive.org/web/20160124085736/https://github.com/technomancy/atreus
  • https://atreus.technomancy.us/
  • Laser cutting done by: https://www.ponoko.com/
  • Case screws (20 mm): https://www.amazon.com/dp/B06XVSPWBW
  • Micro controller: https://www.amazon.com/dp/B01MTU9GOB
  • 18 awg Silicone Wire https://www.amazon.com/dp/B07G744V5Z
  • Diodes
  • Gateron Green Switches
  • Keycaps: https://www.amazon.com/dp/B07Q6ZC52C
• Seems easier than I thought, though my wire stripper decided to stop working :( : ErgoMechKeyboards
• An attempt at neater wiring (yes I have new wire strippers now) : ErgoMechKeyboards

• riskable/keycap_playground: The Keycap Playground is a parametric OpenSCAD keycap generator made for generating keycaps of all shapes and sizes (and profiles)
• A modern handwiring guide - stronger, cleaner, easier
  • https://geekhack.org/index.php?topic=87689.0
• Hand wiring a let's split | Janzon's projects
• Mill Max sockets 0305 vs 7305 vs Holtite
• Adafruit SHARP Memory Display Breakout - 1.3 168x144 Monochrome : ID 3502 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
• Proper Charging | Li-Ion & LiPoly Batteries | Adafruit Learning System
  • Voltages | Li-Ion & LiPoly Batteries | Adafruit Learning System
• Pro Micro Hot-Swap Adapter – SpaceCat Design
• Amazon.com: 180 Pcs M2 Nylon Hex Nuts Screws Spacers Standoff Plastic Accessories Assortment Kit,Black: Home Improvement
• SK8702 FlexPoint™ PS/2 Pointing Stick Mouse Module |Sprintek
• stingray127/handwirehotswap: A 3D printed, Solderless Hot Swap Socket to build keyswitch matrixes
  • Handwire Hot Swap Socket update! : MechanicalKeyboards
• Rubber bumpers 3M Bumpon pack (96)
  • SJ5302-BLISTERPACK 3M | Hardware, Fasteners, Accessories | DigiKey
• Standoffs & screws - M2.5 Kit
  • 3299 Adafruit Industries LLC | Kits | DigiKey
• Wire Wrap 30 AWG Solid Core
  • R30W-0100 Jonard Tools | Cables, Wires | DigiKey
    • https://www.digikey.com/en/products/detail/R30W-0100/K397-ND/221682

Files, BOM and instructions are uploaded! Feel free to build this 20/20 keyboard : r/ErgoMechKeyboards

• https://github.com/Squalius-cephalus/suutari20/
• https://github.com/Squalius-cephalus/suutari20/wiki/Getting-started

• New version of the Lil Chonky Bois, MX version added. : r/ErgoMechKeyboards
• Charybdis Nano - Bastard Keyboards - Split ergonomic keyboards
  • Charybdis Nano is simply wonderful : r/ErgoMechKeyboards
  • Charybdis - Dactyl trackball keyboard : ErgoMechKeyboards
  • Bastardkb/Charybdis - An ergonomic keyboard with integrated trackball.
  • Charybdis - Bastard Keyboards - Split ergonomic keyboards
• Extra small trackball keyboard (5x3, miryoku, 34mm trackball, PMW3360 PCB) : ErgoMechKeyboards
• One-two split mini (dactyl manuform variant: Skeletyl) : ErgoMechKeyboards
  • GitHub - Bastardkb/Skeletyl
  • Skeletyl - Bastard Keyboards
  • New keyboard - new layout. Skeletyl with tents printed in resin. : ErgoMechKeyboards
  • Bastardkb
• TBK Mini - Bastard Keyboards
  • Making the switch from an MS Sculpt to the TBKMini with tenting add-on has been a big leap, but I love the Gazzew Boba u4's and I've never worked this comfortably in 25 years : MechanicalKeyboards

• 3mk (3D Mini Keyboard)

• software kb emulator
• Pi pico keyboard prototype, experiment with e-ink display

• 6 column splay. Split handwired cardboard : ErgoMechKeyboards
• How to make a FERRIS KEYBOARD [ beginner friendly! ] - YouTube
• iiiiiiiiiiiiiiiiiiiiiiiiiiiiii : ErgoMechKeyboards
• I made my keyboard semi-wireless: ErgoMechKeyboards
• Help implementing Adafruit Bluefruit SPI breakout with QMK : olkb
  • link
  • amazon
• [IC] Rollow: First Ever Split Keyboard with Dedicated Thumb Encoders : ErgoMechKeyboards
• Chocolad Keyboard Hacking | Hackaday.io
  • jimmerricks/chocolad
• mitosis-like keyboard
  • mitosis is great, but first col is shifted up
  • ferris
  • 40%, split, wireless goodness: MechanicalKeyboards
  • Split Bluetooth Keyboard
  • davidphilipbarr/Sweep: Sweep - a small promicro based keyboard inspired by the Ferris.
    • davidphilipbarr/36keys: Keyboard pcbs with 36key or less?
  • New build:Mitosis-plus,thank you @reverse_bias: MechanicalKeyboards
  • [photos] interphase | finished my prototype: MechanicalKeyboards
  • Wireless Let's Split Build Log - with both MX and Kailh Low Profile Support: MechanicalKeyboards
• Super slim, handwired, wireless
  • redox-keyboard/redox-w at master · mattdibi/redox-keyboard
• pseudoku/Apoptosis: 44 Keys Mitosis Clone with Staggering Stagger!
  • GlenPickle/Chimera: Chimera Keyboard software and hardware
  • wizarddata/Chimera-Battery-Mod: This is a mod designed to add a convenient battery holder and power switch to the Chimera family of wireless keyboards.
• Very nice keys layout
• KeySeeBee, TeXitoi/keyberon: A rust crate to create a pure rust keyboard firmware.

• golem project author - overview for dovenyi
• GOLEM - DIY Custom Cable
• GOLEM - build logs
• GOLEM - cardboard prototyping

• awesome-mechanical-keyboard/tutorials.md
• awesome-mechanical-keyboard/miscellaneous.md

boardsource/microdox-goodies: just a repo of some micro dox goodies feel free to make any prs you want to this repo and mostly I will just pull them in.

• https://github.com/dekuNukem/duckyPad/blob/master/build_it_yourself.md
• duckyPad/duckyscript_info.md

Build log on Imgur: build log

• https://github.com/nezumee/zebra

bluetooth adapter keyboard - Google Search

• Bluetooth Keyboard Mouse Adapter : 12 Steps (with Pictures) - Instructables
• Bluetooth Keyboard Adapter | Price & Reviews | Drop
• Bluetooth Adapter for Keyboard & Mouse « Handheld Scientific, Inc.
• Bluetooth mini corne : ErgoMechKeyboards

• WIP - functioning prototype : cyberDeck
• drcode/lisperati-1000-diy: DIY Instructions for Building a Lisperati1000 Computer
  • Instructions for the Lisperati1000
    • https://kbd.news/Instructions-for-the-Lisperati1000-566.html
  • Open Source DIY Instructions for the Lisperati1000 Now Available : cyberDeck

• The Stick – Keebio
• BDN9 - 3x3 9-key Macropad - Rotary Encoder Support – Keebio
  • BDN9 Rev. 2 - 3x3 9-key Macropad - Rotary Encoder and RGB – Keebio
• Module Feather/Pro Micro Numpad : olkb
• My first macropad - I designed the PCB and built it. Ultra cheap "case" made with biscuits cardboard
• Chocopad - 16-key Macropad for Kailh Choc Low-Profile Switches – Keebio
• RoMac Macro Pad — Mechboards
• Hotswappable Numpad! : MechanicalKeyboards
• macropad with rotary encoders
  • todbot/pico8enc: Lotsa Rotary Encoders on a Raspberry Pi Pico
  • The Sync Channel Blog: Cherry MX Keypad
  • Amoeba Single-Switch PCBs – Keebio
    • mtl/keyboard-pcbs: Keyboard PCBs
  • AnaviTechnology/anavi-macro-pad-8
  • Ardu Keyboard - Hackster.io
  • ogatatsu/Cherry-Mx-Bitboard-Re
  • imchipwood/dumbpad: Simple 4x4 numpad with rotary encoder. Powered by QMK via ATmega32u4 Pro Micro
  • joshajohnson/Hub16: A macro pad with 16 keys, two rotary encoders, a four port USB hub, and plenty of LEDs!
  • dekuNukem/duckyPad: Do-It-All Mechanical Macropad
  • Raspberry Pi Pico macropad

Top reply: Do this course henki-robotics/robotics_essentials_ros2

Totally free, don't need to buy anything just a computer.

• Pupper — Stanford Student Robotics
• mangdangroboticsclub/QuadrupedRobot: Open-Source,ROS Robot Dog Kit

• Using Raspberry Pi Zero 2W to run the show(Linux). It's a capable machine that runs Linux rather well and has wireless connectivity out of the box

The original article

A Software Defined Radio is essentially a radio that relies on a computer to do most of its data processing. It doesn't rely on analog hardware too much – instead, most of what is does is "defined in software", hence the name.

Usually, SDRs can detect electromagnetic waves in a much wider range than a common FM radio, which makes it especially exciting! I got interested in SDRs after reading about Albert's project to build one as a module for the Framework laptop!

Over the past several years, I've enjoyed the hobby of paper modeling (or papercraft), the art of creating 3D models from cut and glued parts from paper sheets. This hobby is a superset of origami, in that it allows for cutting and gluing, as well as for multiple sheets of paper for a single model. The alleviation of these constraints means that papercraft allows for more complex models that are easier to assemble.

Related:

• Tutorial: Blender MODELLING For Absolute Beginners | Low Poly Girl - YouTube
• List of open-source mobile phones - Wikipedia - en.wikipedia.org

https://makerworld.com/crowdfunding/53-bongo-cat-mini-monitor-2-0-new-features-upgrades

• Build Your Own Arduino-Controlled, Velocity-Sensitive MIDI Keyboard - Hackster.io
• 10 MIDI Controllers You Can Build With an Arduino
• ast/keyboard: Teensy (Arduino clone) 88 key velocity sensitive midi keyboard

ToyKeeper/anduril: Anduril 2 Flashlight Firmware and FSM UI Toolkit - github.com

Anduril is a user interface for flashlights. It is written with FSM, a UI toolkit for flashlights.

What is FSM? The "SM" means "Spaghetti Monster", and the "F" can be any F word you like, such as "Flashlight" or whatever suits your mood. FSM also means "Finite State Machine", which is the type of abstraction used for defining user interfaces. It is like a flowchart turned into executable code.

UI diagrams: containerfan/anduril2-diagrams: User Interface diagrams for Anduril 2 - github.com

• Binder Clip Hack: The $1 Fix for Cracked XREAL Air Arms (YouTube)
• Heatshrink+Binder Clip XREAL Air Arm Repair (Reddit)
• Heatshrink+Cable Ties XREAL Air Arm Repair (Reddit)
• 3D-Printed XREAL Air 1 Arm Support Clips - Comfort & Durability Fix (Reddit)

I have this listed under the 'DIY Hardware Repairs…' section in the Table of Contents on the main page of my site: https://xrealguide.wixsite.com/unofficial

Original article: https://milofultz.com/2025-05-27-i-made-a-chair.html

Simple! Just two pieces.

A subtly obvious e-paper room air monitor (Part 1: Why?) · Nicolin Dora

TL;DR – In the cold season we tend to keep the windows closed. The air gets "stale": humidity often rises above 60 %, which can harm our wellbeing and promote mould. At the same time the CO₂ level in the air increases, which impacts our ability to concentrate. So I built a room air monitor that stays unobtrusive as long as everything is in the green zone, but becomes deliberately noticeable once thresholds are exceeded. For my personal love of statistics I also visualise the measurements in a clear dashboard.

• Show HN: I built a synth for my daughter | Hacker News

• wasp-os: Installing MicroPython on a Colmi P8 smart watch using DaFlasher - YouTube
• colmi p8 bootloader bricked · Issue #10 · fanoush/ds-d6
  • https://github.com/fanoush/ds-d6/issues/10

• Overview | Machine Learning 101 with Lobe and BrainCraft | Adafruit Learning System

• PlottyBot, the Pi based Pen Plotter I designed & built working with handwriting : raspberry_pi

• LibreCO2: Easily Build a low cost CO2 monitor with Arduino - Hackster.io
• Arduino Project Hub
• Building a "Follow Light" with Arduino - DEV
• sudomod (some mini game consoles)
• OSH Park ~ Shared Projects by TheCurrentSource
  • The Current Source
• WatchX Learning Development Board | PCB + Sensors & Actuators - YouTube
• Aplyard/Oled-Clicker: Clicker Counter for Arduino Nano
• Walkie-Talkie
  • DIY Arduino Wristwatch Walkie-Talkie : 6 Steps (with Pictures) - Instructables
  • Make your own very crude Walkie-talkie with an Arduino - YouTube
  • Long Range Arduino Based Walkie Talkie using nRF24L01
  • Senior Electron LLC
    • Walkie Talkie Duino from Senior Electron LLC on Tindie
• SmartScope - Reinventing the oscilloscope by LabNation — Kickstarter
  • Sources - LabNation
  • LabNation - Store
• Vectr - 3D Gesture Controller and Sequencer | Hackaday.io
• Open Source Wireless Inventors Shield for Arduino by Open Source RF — Kickstarter
• Daisy: An Embedded Platform for Music by Electrosmith — Kickstarter
• Lamobo D1- Develop your own mini-camera by Lamobo — Kickstarter
• OWL Programmable Effects Pedal by Martin Klang — Kickstarter
• The Vorpal Combat Hexapod by Steve Pendergrast — Kickstarter

• Watchy by SQFMI | Watchy
• Keypad with 3d printed PCB: 3Dprinting
• PiThermalCam | The PiThermalCam Project connects an MLX90640 Thermal IR Camera to a Raspberry Pi for viewing or web streaming.
  • Raspberry Pi thermal camera - Raspberry Pi
• Danyboard – Open-source electronic prototyping platform
• Building a sonar sensor array with Arduino and Python | by Alberto Naranjo | Feb, 2021 | Towards Data Science
• A Miniature Laptop You Can Build Yourself | Hackaday
• Arduino Tetris clone with MAX7219 8x8 Matrix | Hackaday.io
• Adaptive Macro-Pad Uses Tiny OLED Screens As Keycaps | Hackaday
• FM Radio From Scratch Using An Arduino | Hackaday
• Introduction · Clover - Clover is an educational kit of a programmable quadcopter that consists of popular open source components, and a set of necessary documentation and libraries for working with it.
• 20 Awesome Arduino Projects That You Must Try 2020! - Latest open tech from seeed studio
• He's The Operator Of His Pocket Arduino | Hackaday
• Update #3: My POCKIT project now does some cool things with an ESP32, check it out! : arduino

• What is like Arduino but more powerful?: embedded
• target - Programming Languages Targeting Arduino/AVR - Stack Overflow
• Atmel AVR Microcontroller Languages
• Homepage
• Подтягивающий (стягивающий) резистор - что это, и зачем он нужен
• Arduino Parts
  • Parts | Exploring Arduino
  • What's in Your Arduino Starter Kit? (Arduino Beginners)
• Radio Communication
  • Радио модуль NRF24L01: описание, подключение, схема, характеристики | ВИКИ
  • Arduino Radio Communication (nRF24L01) - Arduino Project Hub
  • Arduino Bluetooth Basic Tutorial - Arduino Project Hub
• 4 Simple Steps for Debugging Your Arduino Project
• QMK can be flashed to arduino, but it requires writing a bootloader to the microcontroller, so either a separate processor is needed or two arduino boards or a separate ISP (In-circuit Serial Programmer)
  • Arduino as ISP and Arduino Bootloaders | Arduino
  • Flashing - QMK
  • Flashing QMK to ATmega328p with arduino? : olkb
    • hsgw/plaid: 12x4 ortholinear usb keyboard made by Through Hole components ONLY.
  • I once used Arduino Uno as a HID, and I can't turn it back to normal Arduino.
  • qmk_firmware/isp_flashing_guide.md at master · qmk/qmk_firmware
• Arduino - Libraries
  • USB Libraries (Leonardo, Micro, Due, Zero and Esplora)
  • Keyboard - Send keystrokes to an attached computer.
  • Mouse - Control cursor movement on a connected computer.
• Arduino Micro | Arduino Official Store: The Micro comes with a built-in USB which makes the Micro recognizable as a mouse or keyboard. - ATmega32U4
• Arduino Leonardo with Headers | Arduino Official Store: The classic Arduino board that can act as a mouse or keyboard.
• [3.3v] Arduino Zero | Arduino Official Store
• QMK - ATmega328P , best way to make it work (or work arounds…) : olkb
  • Arduino Nano (with MCU ATmega328P) should also be fine
• [QMK] Burn DFU bootloader into keyboard with ATmega328p (Arduino Uno etc…) : olkb
• Using arduino : MechanicalKeyboards
  • It's possible using https://github.com/NicoHood/HID.
    • The arduino uno actually has 2 microcontrollers on it, the atmega16u2 (used to upload code over USB) and the atmega328p (the main microcontroller). What you do here is change the code on the 16u2 chip so that when your Arduino sketch running on the atmega328p wants to talk over USB, it first talks to the atmega16u2 which then realays the command over USB to your computer. The most common one is the Pro Micro. An Arduino Uno would probably work, but it would be half the size of the Planck! You might have to write custom firmware for it though, because I'm not sure that QMK supports it.
• NicoHood/HID: Bring enhanced HID functions to your Arduino!
  • This project went through a lot of phases and has now reached a new Arduino USB-Core Library with a lot of new functions like extended HID. It also supports HoodLoader2 (version 1 is no longer supported). The idea is to enable enhanced USB functions to almost all 'standard' Arduino boards.
• Pro Micro - 5V/16MHz - DEV-12640 - SparkFun Electronics
• Teensy USB Development Board
• Teensyduino - Add-on for Arduino IDE to use Teensy USB development board
• Advice - QMK, Arduino + FastLED
• keyboard gloves: an arduino prototype

• Транзисторы для Ардуино
• Купить BC337-40 на складе КОСМОДРОМ, Харьков, Украина
• Купить Биполярный транзистор BC337 NPN, 10 Шт. для Arduino
• Транзистор | Электронные печеньки
• Транзисторы (Амперка / Вики)

• Overview | CircuitPython Media Dial | Adafruit Learning System
• Raspberry Pico: The Complete SDK Overview (Native C/C++, Arduino, MicroPython, CircuitPython) | by Sebastian | Geek Culture | Jun, 2021 | Medium
• How to Use an I2C LCD Display With Raspberry Pi Pico | Tom's Hardware
• Pico Explorer Base – Pimoroni
• GitHub - Rybec/pyRTOS: RTOS written in pure Python, designed for use with CircuitPython
• Python script to make connecting to the Circuit Python REPL quick and easy!
• adafruit/Adafruit_CircuitPython_OV7670: CircuitPython driver for OV7670 cameras
• Circuit Playground Express : ID 3333 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
  • Adafruit Circuit Playground Express - Blocks / Javascript editor

• Going low profile: adjustable keyboard with magnets: ErgoMechKeyboards
• You can now PRINT PCBs! Creating a homemade PCB with the Voltera V-One PCB Printer! - YouTube
• I2C tutorial
  • I2C Driver - QMK
• Electronics & Microcontrollers for Absolute Beginners (Part 13) | Hackaday.io
• Keyboard Matrix Help
• PCB design notes
  • microdox
    • key footprint is nice, allows both mx and kailh hot swap sockets
    • having controller upside down on the left half is not good (not compatible, power diode is at the top)
    • sk6813 mini are too small (better either bigger as on Kyria or mini-e with legs)
  • Kyria
    • nice hints on the pcb, additional mount points
    • no hot swap is not good (mill max is more of a hack)
• circuit prototyping (is there a simpler alternative to PCB?)
  • The World's Great Prototyping Product | Schmartboard, Inc.
  • Review: Schmartboard EZ - Let's Make Robots / Tutorials - RobotShop Community
  • Breadboarding and Prototyping Circuits | Analog Devices
  • Circuit Prototyping
  • How to Self-Assemble Circuit Boards
  • What's The Best Way To Prototype Circuits?
  • Why Are You Still Making PCBs? | Hackaday
• ruiqimao/keyboard-pcb-guide: Guide on how to design keyboard PCBs with KiCad
• Prototyping, Fabrication Products | Prototype Boards Perforated | DigiKey
  • Prototyping, Fabrication Products | Solderless Breadboards | DigiKey
  • Prototyping, Fabrication Products | Prototype Boards Unperforated | DigiKey
• help-14/mechanical-keyboard: DIY mechanical keyboard and where to find them
  • PCB Designer Guide by ai03
  • Keyboard PCB Guide by ruiqimao
  • A modern handwiring guide
  • Hand wiring a let's split (pro micro)
  • How to integrate a trackpoint in a mechanical keyboard (TMK, Teensy)
  • lets-split-guide - This guide covers building a Let's Split v2.
  • the 1-Key-Keyboard project - One key keyboard using Attiny85.
  • 4-key-keyboard - Four key keyboard using Attiny85.
• awesome-mechanical-keyboard/tutorials.md at master · BenRoe/awesome-mechanical-keyboard
  • A modern handwiring guide
  • ai03 PCB Designer Guide - Learn how to make mech keyboard PCBs.
  • Blog post about "search of the best custom keyboard layout".
  • Hand wiring a let's split (pro micro)
  • How to integrate a trackpoint in a mechanical keyboard (TMK, Teensy)
  • Keyboard PCB Guide
  • lets-split-guide - This guide covers building a Let's Split v2.
  • Need a USB cable? Build one! - How to build a custom USB cable with aviation connectors and coils.
  • The Keyboard Matrix - How a keyboard matrix work, explained in depth.
  • The Keyboard Matrix 2 - Another explanation how a keyboard matrix work and why it needs diodes.
• awesome-mechanical-keyboard/miscellaneous.md at master · BenRoe/awesome-mechanical-keyboard
  • KiCad Parts by Ai03 - KiCad Library of custom MX-Alps footprints.
  • KiCad Parts by Daprice - KiCAD footprint library for kailh choc and MX-style mechanical switches.
  • KiCad Parts by Keebio - Various KiCAD footprints for mechanical keyboard parts.
  • KiCAD Parts by TMK - KiCad modules for keyboard design.

For this experiment, I used Atopile — a tool that lets you define a hardware project using code and turns it into a KiCad PCB. I also enlisted Claude , an AI coding assistant that seemed to outperform Cursor for this task.

• Promicro, Elite C - AVR ATMega based
• Alternatives · joric/nrfmicro Wiki
• pinouts
  • How to use a Pro Micro as a cheap controller/converter - deskthority
  • Arduino Pro Micro - Deskthority wiki
• nice!nano, blue micro - nrf52 based (with Bluetooth)
  • BlueMicro V2.1 | nRF52 Hardware Documentation
    • It is based on Adafruit nRF52 board (Adafruit Feather nRF52 Bluefruit LE [nRF52832] ID: 3406 - $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits)
      • The BlueMicro boards are designed to be used with the Adafruit nRF52 Arduino Core but with the footprint of other Arduino boards such as the Arduino Pro Micro and the Arduino Micro.
      • nice!nano - also based on nrf - nRF52840 chip on board with 1MB of Flash and 256KB of RAM
• MicroPython - Python for microcontrollers
  • CircuitPython
    • main difference: interpreter is running on the microprocessor, so no need to re-flash it to update the program (just modify the source)
  • Welcome to Pumbaa's documentation! — Pumbaa 3.0.2 documentation
  • Arduino With Python: How to Get Started – Real Python
  • Meet the BluePhage Express, a Bluetooth keyboard controller for use with CircuitPython/KMK, QMK, and ZMK. : olkb
• Raspberry Pi Pico
  • Pimoroni Pico Explorer Base Review: Expanding Your Raspberry Pi Pico | Tom's Hardware
  • Raspberry Pi Pico Gains Unix-like Operating System | Tom's Hardware
  • How to Use an OLED Display With Raspberry Pi Pico | Tom's Hardware
  • Buy a Raspberry Pi Pico – Raspberry Pi
  • Getting Started with Raspberry Pi Pico – Raspberry Pi
  • Meet Raspberry Silicon: Raspberry Pi Pico now on sale at $4 - Raspberry Pi
    • Adafruit Feather RP 2040
      • RP2040 joins the hundreds of boards in the Feather ecosystem with the fully featured Feather RP 2040 board. The 2″ × 0.9″ dev board has USB C, Lipoly battery charging, 4MB of QSPI flash memory, a STEMMA QT I2C connector, and an optional SWD debug port. With plenty of GPIO for use with any FeatherWing, and hundreds of Qwiic/QT/Grove sensors that can plug and play, it's the fast way to get started.
    • Adafruit ItsyBitsy RP 2040
      • Need a petite dev board for RP2040? The Itsy Bitsy RP 2040 is positively tiny, but it still has lots of GPIO, 4MB of QSPI flash, boot and reset buttons, a built-in RGB NeoPixel, and even a 5V output logic pin, so it's perfect for NeoPixel projects!
    • Arduino Nano RP2040 Connect
      • Arduino joins the RP2040 family with one of its most popular formats: the Arduino Nano. The Arduino Nano RP2040 Connect combines the power of RP2040 with high-quality MEMS sensors (a 9-axis IMU and microphone), a highly efficient power section, a powerful WiFi/Bluetooth module, and the ECC608 crypto chip, enabling anybody to create secure IoT applications with this new microcontroller. The Arduino Nano RP2040 Connect will be available for pre-order in the next few weeks.
    • Pimoroni PicoSystem
      • PicoSystem is a tiny and delightful handheld game-making experience based on RP2040. It comes with a simple and fast software library, plus examples to make your mini-gaming dreams happen. Or just plug it into USB and drop the best creations from the Raspberry Pi-verse straight onto the flash drive.
    • Pimoroni Pico Explorer Base
      • Pico Explorer offers an embedded electronics environment for educators, engineers, and software people who want to learn hardware with less of the "hard" bit. It offers easy expansion and breakout along with a whole bunch of useful bits.
    • SparkFun Thing Plus – RP2040
      • The Thing Plus – RP2040 is a low-cost, high-performance board with flexible digital interfaces featuring Raspberry Pi's RP2040 microcontroller. Within the Feather-compatible Thing Plus form factor with 18 GPIO pins, the board offers an SD card slot, 16MB (128Mbit) flash memory, a JST single-cell battery connector (with a charging circuit and fuel gauge sensor), an addressable WS2812 RGB LED, JTAG PTH pins, mounting holes, and a Qwiic connector to add devices from SparkFun's quick-connect I2C ecosystem.
    • SparkFun MicroMod RP2040 Processor
      • The MicroMod RP2040 Processor Board is part of SparkFun's MicroMod modular interface system. The MicroMod M.2 connector makes it easy to connect your RP2040 Processor Board with the MicroMod carrier board that gives you the inputs and outputs you need for your project.
    • SparkFun Pro Micro – RP2040
      • The Pro Micro RP2040 harnesses the capability of RP2040 on a compact development board with the USB functionality that is the hallmark of all SparkFun's Pro Micro boards. It has a WS2812B addressable LED, boot button, reset button, Qwiic connector, USB-C, and castellated pads.
  • How To Solder Pins to Your Raspberry Pi Pico | Tom's Hardware
  • Buy a Raspberry Pi Pico – Raspberry Pi
  • RPi Pico… potential new controller? : ErgoMechKeyboards
• Adafruit ItsyBitsy
  • Adafruit ItsyBitsy M0 Express - for CircuitPython & Arduino IDE ID: 3727 - $11.95 : Adafruit Industries, Unique & fun DIY electronics and kits
• Downloads | Introducing the Adafruit nRF52840 Feather | Adafruit Learning System
• Review of Bluetooth Low Energy (BLE) Solutions
• BLE4.0 Bluetooth 2.4G Wireless Module, nRF51822 Onboard
  • 1 шт. Bluetooth 4,0 NRF51822 основная плата, маленький фактор BLE4.0 Bluetooth 2,4G беспроводной модуль|bluetooth 4.0|bluetooth bluetoothboard board | АлиЭкспресс
  • 5 шт. Bluetooth 4,0 NRF51822 основная плата, маленький фактор BLE4.0 Bluetooth 2,4G беспроводной модуль|Детали и аксессуары для 3D-принтеров| | АлиЭкспресс
• 3rd party modules/modems - nordicsemi.com
• nice!nano - ProMicro replacements with bluetooth support
  • nice!nano Overview (bluetooth)
  • From nice!nano FAQ
    • How is this different from the nRFMicro or BlueMicro?
    • The nRFmicro is extremely similar to the nice!nano. The main difference is depending on the version of the nRFMicro, the power system would be slightly different from the nice!nano. From a usability standpoint, very little is different. The nice!nano exposes more pins and is thinner than older versions of the nRFMicro.
    • The biggest difference is that the nice!nano is assembly ready, so they can be mass produced more easily than the nRFMicro (hence the GB).
    • The BlueMicro is basically the same story except for the nRF52832 versions don't support USB.
  • nice!nano Overview
  • nice!nano — KeyHive
    • Boardsource - nice!nano v1.0
    • nice!nano: the wireless Pro Micro replacement board is now available at vendors internationally! : MechanicalKeyboards
    • [IC] nice!nano: the super thin, wireless Bluetooth drop-in replacement for the Pro Micro : MechanicalKeyboards
• BlueMicro - ProMicro with bluetooth (can be soldered manually)
  • BlueMicro V2.1 | nRF52 Hardware Documentation
  • BlueMacro840 V1.x | nRF52 Hardware Documentation
  • Getting Started | BlueMicro nRF52 Keyboard Firmware
  • BlueMicro Store
    • Introducing the BlueMicro: A drop-in Bluetooth replacement for the Pro Micro : MechanicalKeyboards
    • BlueMicro_BLE: A BLE Keyboard firmware for the NRF52 chips
    • jpconstantineau/BlueMicro_BLE: Keyboard Firmware for the Nordic nRF52 Series of Bluetooth SoC based on the Adafruit NRF52 Feather
• Home · joric/nrfmicro Wiki
  • nRFMicro 1.4 · joric/nrfmicro Wiki
  • joric/nrfmicro: Pro Micro-compatible Bluetooth 5.2 board with Li-Po charger and USB-C
  • nrfmicro - a Pro Micro alternative for wireless keyboards (bluetooth)
• Alternatives · joric/nrfmicro Wiki
• GitHub - ryan-ma/PD_Micro: USB-C PD3.0 PPS on ATMega32U4 Arduino board
• ProMicro
  • Arduino Pro Micro с коннекторами в Киеве и Украине
  • Amazon.com: HiLetgo 3pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible to Arduino Pro Micro Serial Connection with Pin Header: Home Improvement
  • QMK Pro Micro Pinouts? : olkb
• Elite-C - Deskthority wiki
  • Why would I want to use an Elite C? – splitkb.com
  • [Vendor] Announcing The Elite-C: A better Pro Micro replacement with USB-C Port! Available Now! : mechmarket
• Adafruit Feather nRF52 Bluefruit LE [nRF52832] ID: 3406 - $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
  • Коротко о nRF51822: Быстрый старт / Хабр
  • Redistributing the SDK as personal github repo - Nordic Q&A - Nordic DevZone - Nordic DevZone

• help-14/mechanical-keyboard: DIY mechanical keyboard and where to find them

  • https://github.com/help-14/mechanical-keyboard#controller
  • controller section
  • adafruit/Adafruit-Feather-32u4-Bluefruit-LE-PCB: PCB files for the Adafruit Feather 32u4 Bluefruit LE
  • adafruit/Adafruit-nRF52-Bluefruit-Feather-PCB: PCB files for the Adafruit nRF52 Bluefruit Feather
  • USB to USB keyboard converter (convert regular keyboard to QMK)
• BLE4.0 Bluetooth 2.4G Wireless Module, nRF51822 Onboard
• Pro Micro vs. Teensy 2.0 review (2020)

• Never Solder Again - How to Connect Wires the EASY Way - YouTube
• Soldering a circuit board
• Soldering a circuit board : ErgoMechKeyboards
• Reflow Soldering? It's So Much Easier with a Solder Paste Stencil - Projects
  • Who Says Solder Paste Stencils Have To Be CNC Cut? | Hackaday
• A Beginner's Guide to Soldering | The Art of Manliness
• How to test LEDs with Digital Multimeters (DMMs) | CircuitBread
• Guide to Soldering LEDs - LEDSupply BLOG
• What is the RIGHT Soldering Temperature?
• What's the proper soldering iron temperature for standard .031" 60/40 solder? - Electrical Engineering Stack Exchange
• How to solder (x-post from r/coolguides : MechanicalKeyboards
• How To Solder: A Complete Beginners Guide - Makerspaces.com
• Hand Wiring Guide - QMK
• Hand soldering SMT resistor arrays. Is it possible? : ECE
  • http://www.digikey.com/product-detail/en/YC164-JR-0710KL/YC164J-10KCT-ND/1005702
  • mitosis has these resistor arrays and other small components like that
• Soldering 1206 SMD resistor - YouTube
• How to Solder Surface Mount parts (it's easy!) - YouTube
• Soldering 101: Mechanical Keyboard Soldering Basics and Useful Tips! – The Keeblog

• Looking for some attachment for the iron to heat several pads at the same time.
• JBC_AM120-A_-_Manual.pdf
• JBC Tools
  • AN115-A - Adjustable Nano Tweezer
  • New Adjustable Nano Tweezers AN115-A - YouTube
• T0051317299N Apex Tool Group | Soldering, Desoldering, Rework Products | DigiKey
• FM2023-05 American Hakko Products, Inc. | Soldering, Desoldering, Rework Products | DigiKey
• FX8804-02 American Hakko Products, Inc. | Soldering, Desoldering, Rework Products | DigiKey
• Soldering, Desoldering, Rework Products | Soldering Irons, Tweezers, Handles | DigiKey

• https://www.reddit.com/r/DIEMs/
• https://www.reddit.com/r/iems/comments/1t8vs1d/spent_the_last_3_months_diving_into_diy_iems_here/