HardLabs

Trinkey

PythonAtSea·trinkey

Trinkey PCB layout, top view — open source STM32 board by PythonAtSea

About the Trinkey PCB

Trinkey is an open source STM32 PCB design by PythonAtSea, published on GitHub. It is a 2-layer board measuring 48.1 × 17.5 mm, with 21 components from 13 distinct parts.

Its main chip is the STM32C071G8UX, from the STM32 family. Other key parts include the XC6206PXXXMR, USBLC6-2SC6 and 74AHCT1G125. By type, the board carries 9 capacitors, 4 ICs, 4 LEDs, 1 connector and 1 resistor.

It belongs with the keyboards designs in this gallery.

From the project

Trinkey is a STM32 based keychain trinket. It has two Kailh switches, each with a MBK low profile keycap and a reverse mounted SK6812MINI-E RGB LED. Additionally, there are two more reverse mounted SK6812MINI-E next to the keyring. It also has a male USB-A plug which powers the d

Trinkey is a STM32 based keychain trinket. It has two Kailh switches, each with a MBK low profile keycap and a reverse mounted SK6812MINI-E RGB LED. Additionally, there are two more reverse mounted SK6812MINI-E next to the keyring. It also has a male USB-A plug which powers the device and provides USB FS connectivity.

The Trinkey has pads for flashing using Serial Wire Debug. If you're getting one of these thru Hack Club Gadget Market, it will be pre flashing with a bootloader that supports uploading code over USB using the Ardunio IDE. It will also have some sort of example program, but…

Trinkey, from the project README
From the project README

Main components on the Trinkey

STM32C071G8UXXC6206PXXXMRUSBLC6-2SC674AHCT1G125

Trinkey bill of materials (BOM)

21 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32C071G8UX
STM32C071G8Ux
U1
1
XC6206PXXXMR
XC6206PxxxMR
U2
1
USBLC6-2SC6
U3
1
74AHCT1G125
U4
1
USB_A
J1
2
CHOC_V1_SW_SOLDER
choc_v1_SW_solder
CH1, CH2
2
CHOC_SK6812MINI-E
choc_SK6812MINI-E
LED1, LED2
2
SK6812MINI-E
LED3, LED4
2
1u
C1, C2
5
100N
100n
C3, C6, C7, C8, C9
1
4.7U
4.7u
C4
1
10U
10u
C5
1
47
R1

Trinkey design files

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

Trinkey: common questions

What microcontroller does the Trinkey use?

The Trinkey is built around the STM32C071G8UX, from the STM32 family.

How big is the Trinkey PCB?

The Trinkey measures 48.1 × 17.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Trinkey?

21 components, from 13 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 Trinkey design files?

From the PythonAtSea/trinkey 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 Trinkey design in my own project?

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

Can I test firmware for the Trinkey without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

Similar boards