Goldfish v2

Note: This branch contains the design for Goldfish v2. The Goldfish v1 design files are available in the v1 branch.

Goldfish is a Pro Micro compatible microcontroller board designed for use in mechanical keyboards. It is based on the same Atmel ATMega32U4 chip and is programmable using the Arduino IDE or a keyboard specific firmware such as TMK or QMK. Of course it is perfectly usable for any other electronics projects too, not just keyboards.

Features

Lower board profile with the mid-mounted USB-C connector
Two internal pins make the USB data lines easily accessible
USB-C is more durable, reversible and just plain cool
5 additional pins on the bottom edge of the board
Pin-compatible with the original Pro Micro
Sturdier through-hole USB connector
On board ESD protection for USB lines

Changes compared to Goldfish v1

Addition of on board ESD protection and fuse
All 0603 resistors and capacitors for (slightly) easier hand assembly
Castellated edge connectors similar to the Elite-C
Less obscure USB-C connector
- Use of more commonly available components in 2022
- Choice between multiple compatible connectors and suppliers
- Uses USB 2.0-only connector for easier and cheaper assembly

Disadvantages

No onboard RX, TX LEDs
No onboard voltage regulator (this makes no difference for keyboards; a regulator is only required when power supplies of over 5.5V are used)

Vendors Selling Goldfish

Goldfish v1 rev. C

BeeKeeb

Comet (modified design based on Goldfish v1; see related projects)

Tokas' Kable Works

Note: These products are sold by 3rd party vendors and are not 'officially' endorsed by me. I'm simply listing them here for convenience.

(Also please let me know if anything is missing from this list)

Related Projects

Alvaro by Ariamelon

A modified Goldfish v1 using 0603 components instead of 0402

Comet by Tokas

A modified Goldfish v1 using a HRO TYPE-C-31-M-12 connector

Whale by Jia Geng Chang

A modified Goldfish v1 using a Jing 918-418K2024S40000 connector

Goldfish-clone-JLCPCB by Jeremy J Starcher

A modified Goldfish v1 designed to meet JLCPCB's assembly requirements

Elite-C from keeb.io

An unrelated and closed source project with similar design goals

(Please let me know if anything is missing form this list)

License

Released under the Creative Commons Attribution Share-Alike 4.0 License.
https://creativecommons.org/licenses/by-sa/4.0/

Original Arduino Mini Design by Team Arduino.
Arduino Pro Mini Design by Spark Fun Electronics.
Pro Micro Design by Spark Fun Electronics.
Goldfish Design by Lucas Jansen.

abdul / goldfish